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-rw-r--r--creg/Jamfile6
-rw-r--r--creg/Makefile.am11
-rw-r--r--creg/README20
-rw-r--r--creg/creg.cc384
-rw-r--r--creg/json_feature_map_lexer.h15
-rw-r--r--creg/json_feature_map_lexer.ll137
-rw-r--r--creg/test_data/auto-mpg.testfeat93
-rw-r--r--creg/test_data/auto-mpg.testresp93
-rw-r--r--creg/test_data/auto-mpg.trainfeat300
-rw-r--r--creg/test_data/auto-mpg.trainresp300
-rw-r--r--creg/test_data/iris.testfeat50
-rw-r--r--creg/test_data/iris.testresp50
-rw-r--r--creg/test_data/iris.trainfeat100
-rw-r--r--creg/test_data/iris.trainresp100
-rw-r--r--creg/test_data/shuttle.testfeat1
-rw-r--r--creg/test_data/shuttle.testresp1
-rw-r--r--creg/test_data/shuttle.trainfeat23
-rw-r--r--creg/test_data/shuttle.trainresp23
18 files changed, 0 insertions, 1707 deletions
diff --git a/creg/Jamfile b/creg/Jamfile
deleted file mode 100644
index cfed2388..00000000
--- a/creg/Jamfile
+++ /dev/null
@@ -1,6 +0,0 @@
-import lex ;
-
-exe creg : creg.cc json_feature_map_lexer.ll ..//utils ../training//liblbfgs ..//boost_program_options : <include>../training <include>. : <library>..//z ;
-
-alias programs : creg ;
-
diff --git a/creg/Makefile.am b/creg/Makefile.am
deleted file mode 100644
index 9e25b838..00000000
--- a/creg/Makefile.am
+++ /dev/null
@@ -1,11 +0,0 @@
-bin_PROGRAMS = \
- creg
-
-creg_SOURCES = creg.cc json_feature_map_lexer.cc
-creg_LDADD = $(top_srcdir)/training/liblbfgs/liblbfgs.a $(top_srcdir)/utils/libutils.a -lz
-
-json_feature_map_lexer.cc: json_feature_map_lexer.ll
- $(LEX) -s -8 -CF -o$@ $<
-
-AM_CPPFLAGS = -W -Wall -DNDEBUG -I$(top_srcdir)/utils -I$(top_srcdir)/training
-
diff --git a/creg/README b/creg/README
deleted file mode 100644
index 208cabf5..00000000
--- a/creg/README
+++ /dev/null
@@ -1,20 +0,0 @@
-creg is a fast tool for training linear and logistic regression models with
-l_1 and l_2 regularization. Its data (feature and response) format is
-compatible with ARKRegression.
-
-EXAMPLES
-
-Logistic regression example (training only):
- $ ./creg -x test_data/iris.trainfeat -y test_data/iris.trainresp --l1 1.0 > weights.txt
-
-Logistic regression example (training and testing):
- $ ./creg -x test_data/iris.trainfeat -y test_data/iris.trainresp --l1 1.0 \
- -t test_data/iris.testfeat -s test_data/iris.testresp > weights.txt
-
-Linear regression example (training and testing):
- $ ./creg -n -x test_data/auto-mpg.trainfeat -y test_data/auto-mpg.trainresp --l2 1000 \
- -t test_data/auto-mpg.testfeat -s test_data/auto-mpg.testresp > weights.txt
-
-Ordinal regression example
- $ ./creg -o -x test_data/shuttle.trainfeat -y test_data/shuttle.trainresp
-
diff --git a/creg/creg.cc b/creg/creg.cc
deleted file mode 100644
index b145ac49..00000000
--- a/creg/creg.cc
+++ /dev/null
@@ -1,384 +0,0 @@
-#include <cstdlib>
-#include <iostream>
-#include <vector>
-#include <tr1/unordered_map>
-#include <limits>
-#include <cmath>
-
-#include <boost/program_options.hpp>
-#include <boost/program_options/variables_map.hpp>
-
-#include "json_feature_map_lexer.h"
-#include "prob.h"
-#include "filelib.h"
-#include "weights.h"
-#include "sparse_vector.h"
-#include "liblbfgs/lbfgs++.h"
-
-using namespace std;
-using namespace std::tr1;
-namespace po = boost::program_options;
-
-void InitCommandLine(int argc, char** argv, po::variables_map* conf) {
- po::options_description opts("Configuration options");
- opts.add_options()
- ("training_features,x", po::value<string>(), "File containing training instance features (ARKRegression format)")
- ("training_responses,y", po::value<string>(), "File containing training response features (ARKRegression format)")
- ("linear,n", "Linear (rather than logistic) regression")
- ("l1",po::value<double>()->default_value(0.0), "l_1 regularization strength")
- ("l2",po::value<double>()->default_value(0.0), "l_2 regularization strength")
- ("test_features,t", po::value<string>(), "File containing training instance features (ARKRegression format)")
- ("test_responses,s", po::value<string>(), "File containing training response features (ARKRegression format)")
- ("weights,w", po::value<string>(), "Initial weights")
- ("epsilon,e", po::value<double>()->default_value(1e-4), "Epsilon for convergence test. Terminates when ||g|| < epsilon * max(1, ||w||)")
- ("memory_buffers,m",po::value<unsigned>()->default_value(40), "Number of memory buffers for LBFGS")
- ("help,h", "Help");
- po::options_description dcmdline_options;
- dcmdline_options.add(opts);
- po::store(parse_command_line(argc, argv, dcmdline_options), *conf);
- if (conf->count("help") || !conf->count("training_features") || !conf->count("training_responses")) {
- cerr << dcmdline_options << endl;
- exit(1);
- }
-}
-
-struct TrainingInstance {
- SparseVector<float> x;
- union {
- unsigned label; // for categorical predictions
- float value; // for continuous predictions
- } y;
-};
-
-struct ReaderHelper {
- explicit ReaderHelper(vector<TrainingInstance>* xyp) : xy_pairs(xyp), lc(), flag() {}
- unordered_map<string, unsigned> id2ind;
- vector<TrainingInstance>* xy_pairs;
- int lc;
- bool flag;
-};
-
-void ReaderCB(const string& id, const SparseVector<float>& fmap, void* extra) {
- ReaderHelper& rh = *reinterpret_cast<ReaderHelper*>(extra);
- ++rh.lc;
- if (rh.lc % 1000 == 0) { cerr << '.'; rh.flag = true; }
- if (rh.lc % 40000 == 0) { cerr << " [" << rh.lc << "]\n"; rh.flag = false; }
- const unordered_map<string, unsigned>::iterator it = rh.id2ind.find(id);
- if (it == rh.id2ind.end()) {
- cerr << "Unlabeled example in line " << rh.lc << " (key=" << id << ')' << endl;
- abort();
- }
- (*rh.xy_pairs)[it->second - 1].x = fmap;
-}
-
-void ReadLabeledInstances(const string& ffeats,
- const string& fresp,
- const bool is_continuous,
- vector<TrainingInstance>* xy_pairs,
- vector<string>* labels) {
- bool flag = false;
- xy_pairs->clear();
- int lc = 0;
- ReaderHelper rh(xy_pairs);
- unordered_map<string, unsigned> label2id;
- cerr << "Reading responses from " << fresp << " ..." << endl;
- ReadFile fr(fresp);
- for (unsigned i = 0; i < labels->size(); ++i)
- label2id[(*labels)[i]] = i;
- istream& in = *fr.stream();
- string line;
- while(getline(in, line)) {
- ++lc;
- if (lc % 1000 == 0) { cerr << '.'; flag = true; }
- if (lc % 40000 == 0) { cerr << " [" << lc << "]\n"; flag = false; }
- if (line.size() == 0) continue;
- if (line[0] == '#') continue;
- unsigned p = 0;
- while (p < line.size() && line[p] != ' ' && line[p] != '\t') { ++p; }
- unsigned& ind = rh.id2ind[line.substr(0, p)];
- if (ind != 0) { cerr << "ID " << line.substr(0, p) << " duplicated in line " << lc << endl; abort(); }
- while (p < line.size() && (line[p] == ' ' || line[p] == '\t')) { ++p; }
- assert(p < line.size());
- xy_pairs->push_back(TrainingInstance());
- ind = xy_pairs->size();
- if (is_continuous) {
- xy_pairs->back().y.value = strtof(&line[p], 0);
- } else { // categorical predictions
- unordered_map<string, unsigned>::iterator it = label2id.find(line.substr(p));
- if (it == label2id.end()) {
- const string label = line.substr(p);
- it = label2id.insert(make_pair(label, labels->size())).first;
- labels->push_back(label);
- }
- xy_pairs->back().y.label = it->second; // label id
- }
- }
- if (flag) cerr << endl;
- if (!is_continuous) {
- cerr << "LABELS:";
- for (unsigned j = 0; j < labels->size(); ++j)
- cerr << " " << (*labels)[j];
- cerr << endl;
- }
- cerr << "Reading features from " << ffeats << " ..." << endl;
- ReadFile ff(ffeats);
- JSONFeatureMapLexer::ReadRules(ff.stream(), ReaderCB, &rh);
- if (rh.flag) cerr << endl;
-}
-
-// helper base class (not polymorphic- just a container and some helper functions) for loss functions
-// real loss functions should implement double operator()(const vector<double>& x, double* g),
-// which should evaluate f(x) and g = f'(x)
-struct BaseLoss {
- // dimp1 = number of categorial outputs possible for logistic regression
- // for linear regression, it should be 1 more than the dimension of the response variable
- BaseLoss(
- const vector<TrainingInstance>& tr,
- unsigned dimp1,
- unsigned numfeats,
- unsigned ll2) : training(tr), K(dimp1), p(numfeats), l2(ll2) {}
-
- // weight vector layout for K classes, with p features
- // w[0 : K-1] = bias weights
- // w[y*p + K : y*p + K + p - 1] = feature weights for y^th class
- // this representation is used in ComputeDotProducts and GradAdd
- void ComputeDotProducts(const SparseVector<float>& fx, // feature vector of x
- const vector<double>& w, // full weight vector
- vector<double>* pdotprods) const {
- vector<double>& dotprods = *pdotprods;
- const unsigned km1 = K - 1;
- dotprods.resize(km1);
- for (unsigned y = 0; y < km1; ++y)
- dotprods[y] = w[y]; // bias terms
- for (SparseVector<float>::const_iterator it = fx.begin(); it != fx.end(); ++it) {
- const float fval = it->second;
- const unsigned fid = it->first;
- for (unsigned y = 0; y < km1; ++y)
- dotprods[y] += w[fid + y * p + km1] * fval;
- }
- }
-
- double ApplyRegularizationTerms(const vector<double>& weights,
- double* g) const {
- double reg = 0;
- for (size_t i = K - 1; i < weights.size(); ++i) {
- const double& w_i = weights[i];
- reg += l2 * w_i * w_i;
- g[i] += 2 * l2 * w_i;
- }
- return reg;
- }
-
- void GradAdd(const SparseVector<float>& fx,
- const unsigned y,
- const double scale,
- double* acc) const {
- acc[y] += scale; // class bias
- for (SparseVector<float>::const_iterator it = fx.begin();
- it != fx.end(); ++it)
- acc[it->first + y * p + K - 1] += it->second * scale;
- }
-
- const vector<TrainingInstance>& training;
- const unsigned K, p;
- const double l2;
-};
-
-struct UnivariateSquaredLoss : public BaseLoss {
- UnivariateSquaredLoss(
- const vector<TrainingInstance>& tr,
- unsigned numfeats,
- const double l2) : BaseLoss(tr, 2, numfeats, l2) {}
-
- // evaluate squared loss and gradient
- double operator()(const vector<double>& x, double* g) const {
- fill(g, g + x.size(), 0.0);
- double cll = 0;
- vector<double> dotprods(1); // univariate prediction
- for (unsigned i = 0; i < training.size(); ++i) {
- const SparseVector<float>& fmapx = training[i].x;
- const double refy = training[i].y.value;
- ComputeDotProducts(fmapx, x, &dotprods);
- double diff = dotprods[0] - refy;
- cll += diff * diff;
-
- double scale = 2 * diff;
- GradAdd(fmapx, 0, scale, g);
- }
- double reg = ApplyRegularizationTerms(x, g);
- return cll + reg;
- }
-
- // return root mse
- double Evaluate(const vector<TrainingInstance>& test,
- const vector<double>& w) const {
- vector<double> dotprods(1); // K-1 degrees of freedom
- double mse = 0;
- for (unsigned i = 0; i < test.size(); ++i) {
- const SparseVector<float>& fmapx = test[i].x;
- const float refy = test[i].y.value;
- ComputeDotProducts(fmapx, w, &dotprods);
- double diff = dotprods[0] - refy;
- cerr << "line=" << (i+1) << " true=" << refy << " pred=" << dotprods[0] << endl;
- mse += diff * diff;
- }
- mse /= test.size();
- return sqrt(mse);
- }
-};
-
-struct MulticlassLogLoss : public BaseLoss {
- MulticlassLogLoss(
- const vector<TrainingInstance>& tr,
- unsigned k,
- unsigned numfeats,
- const double l2) : BaseLoss(tr, k, numfeats, l2) {}
-
- // evaluate log loss and gradient
- double operator()(const vector<double>& x, double* g) const {
- fill(g, g + x.size(), 0.0);
- vector<double> dotprods(K - 1); // K-1 degrees of freedom
- vector<prob_t> probs(K);
- double cll = 0;
- for (unsigned i = 0; i < training.size(); ++i) {
- const SparseVector<float>& fmapx = training[i].x;
- const unsigned refy = training[i].y.label;
- //cerr << "FMAP: " << fmapx << endl;
- ComputeDotProducts(fmapx, x, &dotprods);
- prob_t z;
- for (unsigned j = 0; j < dotprods.size(); ++j)
- z += (probs[j] = prob_t(dotprods[j], init_lnx()));
- z += (probs.back() = prob_t::One());
- for (unsigned y = 0; y < probs.size(); ++y) {
- probs[y] /= z;
- //cerr << " p(y=" << y << ")=" << probs[y].as_float() << "\tz=" << z << endl;
- }
- cll -= log(probs[refy]); // log p(y | x)
-
- for (unsigned y = 0; y < dotprods.size(); ++y) {
- double scale = probs[y].as_float();
- if (y == refy) { scale -= 1.0; }
- GradAdd(fmapx, y, scale, g);
- }
- }
- double reg = ApplyRegularizationTerms(x, g);
- return cll + reg;
- }
-
- double Evaluate(const vector<TrainingInstance>& test,
- const vector<double>& w) const {
- vector<double> dotprods(K - 1); // K-1 degrees of freedom
- double correct = 0;
- for (unsigned i = 0; i < test.size(); ++i) {
- const SparseVector<float>& fmapx = test[i].x;
- const unsigned refy = test[i].y.label;
- ComputeDotProducts(fmapx, w, &dotprods);
- double best = 0;
- unsigned besty = dotprods.size();
- for (unsigned y = 0; y < dotprods.size(); ++y)
- if (dotprods[y] > best) { best = dotprods[y]; besty = y; }
- if (refy == besty) { ++correct; }
- }
- return correct / test.size();
- }
-};
-
-template <class LossFunction>
-double LearnParameters(LossFunction& loss,
- const double l1,
- const unsigned l1_start,
- const unsigned memory_buffers,
- const double eps,
- vector<double>* px) {
- LBFGS<LossFunction> lbfgs(px, loss, memory_buffers, l1, l1_start, eps);
- lbfgs.MinimizeFunction();
- return 0;
-}
-
-int main(int argc, char** argv) {
- po::variables_map conf;
- InitCommandLine(argc, argv, &conf);
- string line;
- double l1 = conf["l1"].as<double>();
- double l2 = conf["l2"].as<double>();
- const unsigned memory_buffers = conf["memory_buffers"].as<unsigned>();
- const double epsilon = conf["epsilon"].as<double>();
- if (l1 < 0.0) {
- cerr << "L1 strength must be >= 0\n";
- return 1;
- }
- if (l2 < 0.0) {
- cerr << "L2 strength must be >= 0\n";
- return 2;
- }
-
- const bool is_continuous = conf.count("linear");
- const string xfile = conf["training_features"].as<string>();
- const string yfile = conf["training_responses"].as<string>();
- vector<string> labels; // only populated for non-continuous models
- vector<TrainingInstance> training, test;
- ReadLabeledInstances(xfile, yfile, is_continuous, &training, &labels);
- if (conf.count("test_features")) {
- const string txfile = conf["test_features"].as<string>();
- const string tyfile = conf["test_responses"].as<string>();
- ReadLabeledInstances(txfile, tyfile, is_continuous, &test, &labels);
- }
-
- if (conf.count("weights")) {
- cerr << "Initial weights are not implemented, please implement." << endl;
- // TODO read weights for categorical and continuous predictions
- // can't use normal cdec weight framework
- abort();
- }
-
- cerr << " Number of features: " << FD::NumFeats() << endl;
- cerr << "Number of training examples: " << training.size() << endl;
- const unsigned p = FD::NumFeats();
- cout.precision(15);
-
- if (conf.count("linear")) { // linear regression
- vector<double> weights(1 + FD::NumFeats(), 0.0);
- cerr << " Number of parameters: " << weights.size() << endl;
- UnivariateSquaredLoss loss(training, p, l2);
- LearnParameters(loss, l1, 1, memory_buffers, epsilon, &weights);
-
- if (test.size())
- cerr << "Held-out root MSE: " << loss.Evaluate(test, weights) << endl;
-
- cout << p << "\t***CONTINUOUS***" << endl;
- cout << "***BIAS***\t" << weights[0] << endl;
- for (unsigned f = 0; f < p; ++f) {
- const double w = weights[1 + f];
- if (w)
- cout << FD::Convert(f) << "\t" << w << endl;
- }
- } else { // logistic regression
- vector<double> weights((1 + FD::NumFeats()) * (labels.size() - 1), 0.0);
- cerr << " Number of parameters: " << weights.size() << endl;
- cerr << " Number of labels: " << labels.size() << endl;
- const unsigned K = labels.size();
- const unsigned km1 = K - 1;
- MulticlassLogLoss loss(training, K, p, l2);
- LearnParameters(loss, l1, km1, memory_buffers, epsilon, &weights);
-
- if (test.size())
- cerr << "Held-out accuracy: " << loss.Evaluate(test, weights) << endl;
-
- cout << p << "\t***CATEGORICAL***";
- for (unsigned y = 0; y < K; ++y)
- cout << '\t' << labels[y];
- cout << endl;
- for (unsigned y = 0; y < km1; ++y)
- cout << labels[y] << "\t***BIAS***\t" << weights[y] << endl;
- for (unsigned y = 0; y < km1; ++y) {
- for (unsigned f = 0; f < p; ++f) {
- const double w = weights[km1 + y * p + f];
- if (w)
- cout << labels[y] << "\t" << FD::Convert(f) << "\t" << w << endl;
- }
- }
- }
-
- return 0;
-}
-
diff --git a/creg/json_feature_map_lexer.h b/creg/json_feature_map_lexer.h
deleted file mode 100644
index 3324aa29..00000000
--- a/creg/json_feature_map_lexer.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#ifndef _RULE_LEXER_H_
-#define _RULE_LEXER_H_
-
-#include <iostream>
-#include <string>
-
-#include "sparse_vector.h"
-
-struct JSONFeatureMapLexer {
- typedef void (*FeatureMapCallback)(const std::string& id, const SparseVector<float>& fmap, void* extra);
- static void ReadRules(std::istream* in, FeatureMapCallback func, void* extra);
-};
-
-#endif
-
diff --git a/creg/json_feature_map_lexer.ll b/creg/json_feature_map_lexer.ll
deleted file mode 100644
index f9ce7977..00000000
--- a/creg/json_feature_map_lexer.ll
+++ /dev/null
@@ -1,137 +0,0 @@
-%option nounput
-%{
-
-#include "json_feature_map_lexer.h"
-#include "fdict.h"
-#include "fast_sparse_vector.h"
-
-#define YY_DECL int json_fmap_yylex (void)
-#undef YY_INPUT
-#define YY_INPUT(buf, result, max_size) (result = jfmap_stream->read(buf, max_size).gcount())
-#define YY_SKIP_YYWRAP 1
-int yywrap() { return 1; }
-
-JSONFeatureMapLexer::FeatureMapCallback json_fmap_callback = NULL;
-void* json_fmap_callback_extra = NULL;
-std::istream* jfmap_stream = NULL;
-bool fl = true;
-unsigned spos = 0;
-char featname[16000];
-#define MAX_FEATS 20000
-std::pair<int, float> featmap[MAX_FEATS];
-unsigned curfeat = 0;
-std::string instid;
-
-inline unsigned unicode_escape_to_utf8(uint16_t w1, uint16_t w2, char* putf8) {
- uint32_t cp;
- if((w1 & 0xfc00) == 0xd800) {
- if((w2 & 0xfc00) == 0xdc00) {
- cp = 0x10000 + (((static_cast<uint32_t>(w1) & 0x3ff) << 10) | (w2 & 0x3ff));
- } else {
- abort();
- }
- } else {
- cp = w1;
- }
-
-
- if(cp < 0x80) {
- putf8[0] = static_cast<char>(cp);
- return 1;
- } else if(cp < 0x0800) {
- putf8[0] = 0xc0 | ((cp >> 6) & 0x1f);
- putf8[1] = 0x80 | (cp & 0x3f);
- return 2;
- } else if(cp < 0x10000) {
- putf8[0] = 0xe0 | ((cp >> 6) & 0x0f);
- putf8[1] = 0x80 | ((cp >> 6) & 0x3f);
- putf8[2] = 0x80 | (cp & 0x3f);
- return 3;
- } else if(cp < 0x1fffff) {
- putf8[0] = 0xf0 | ((cp >> 18) & 0x07);
- putf8[1] = 0x80 | ((cp >> 12) & 0x3f);
- putf8[2] = 0x80 | ((cp >> 6) & 0x3f);
- putf8[3] = 0x80 | (cp & 0x3f);
- return 4;
- } else {
- abort();
- }
- return 0;
-}
-
-%}
-
-ID [^ \t\n\r]+
-HEX_D [a-fA-F0-9]
-INT [-]?[0-9]+
-DOUBLE {INT}((\.[0-9]+)?([eE][-+]?[0-9]+)?)
-WS [ \t\r\n]
-LCB [{]
-RCB [}]
-UNESCAPED_CH [^\"\\\b\n\r\f\t]
-
-%x JSON PREVAL STRING JSONVAL POSTVAL DOUBLE
-%%
-
-<INITIAL>{ID} { instid = yytext; BEGIN(JSON); }
-
-<JSON>{WS}*{LCB}{WS}* { BEGIN(PREVAL); }
-
-<JSON>{WS}*{LCB}{WS}*{RCB}\n* {const SparseVector<float> x;
- json_fmap_callback(instid, x, json_fmap_callback_extra);
- curfeat = 0;
- BEGIN(INITIAL);}
-
-<PREVAL>\" { BEGIN(STRING); spos=0; }
-
-<STRING>\" { featname[spos] = 0;
- featmap[curfeat].first = FD::Convert(featname);
- BEGIN(JSONVAL);
- }
-<STRING>{UNESCAPED_CH} { featname[spos++] = yytext[0]; }
-<STRING>\\\" { featname[spos++] = '"'; }
-<STRING>\\\\ { featname[spos++] = '\\'; }
-<STRING>\\\/ { featname[spos++] = '/'; }
-<STRING>\\b { }
-<STRING>\\f { }
-<STRING>\\n { }
-<STRING>\\r { }
-<STRING>\\t { }
-<STRING>\\u{HEX_D}{HEX_D}{HEX_D}{HEX_D} { uint16_t hex = strtol(&yytext[2], NULL, 16);
- spos += unicode_escape_to_utf8(hex, 0, &featname[spos++])-1;
- }
-
-<JSONVAL>{WS}*:{WS}* { BEGIN(DOUBLE); }
-<DOUBLE>{DOUBLE} { featmap[curfeat++].second = strtod(yytext, 0);
- BEGIN(POSTVAL); }
-
-<POSTVAL>{WS}*,{WS}* { BEGIN(PREVAL); }
-<POSTVAL>{WS}*{RCB}\n* {
- const SparseVector<float> x(&featmap[0], &featmap[curfeat]);
- json_fmap_callback(instid, x, json_fmap_callback_extra);
- curfeat = 0;
- BEGIN(INITIAL);
- }
-
-<PREVAL,POSTVAL,DOUBLE,JSONVAL,INITIAL>. { std::cerr << "bad input: " << yytext << std::endl; abort(); }
-
-%%
-
-void JSONFeatureMapLexer::ReadRules(std::istream* in, FeatureMapCallback func, void* extra) {
- json_fmap_callback = func;
- json_fmap_callback_extra = extra;
- jfmap_stream = in;
- json_fmap_yylex();
-}
-
-#if 0
-void cb(const std::string& id, const SparseVector<float>& fmap, void* extra) {
- (void) extra;
- static int cc = 0;
- cc++;
-}
-
-int main() {
- JSONFeatureMapLexer::ReadRules(&std::cin, cb, NULL);
-}
-#endif
diff --git a/creg/test_data/auto-mpg.testfeat b/creg/test_data/auto-mpg.testfeat
deleted file mode 100644
index 91c21e99..00000000
--- a/creg/test_data/auto-mpg.testfeat
+++ /dev/null
@@ -1,93 +0,0 @@
-test1_fiat_124b {"horsepower": 76.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 88.0, "weight": 2065.0}
-test2_dodge_aspen {"horsepower": 110.0, "acceleration": 18.7, "cylinders": 6.0, "displacement": 225.0, "weight": 3620.0}
-test3_toyota_celica_gt_liftback {"horsepower": 95.0, "acceleration": 14.8, "cylinders": 4.0, "displacement": 134.0, "weight": 2515.0}
-test4_amc_matador {"horsepower": 110.0, "acceleration": 18.0, "cylinders": 6.0, "displacement": 258.0, "weight": 3632.0}
-test5_audi_5000s_(diesel) {"horsepower": 67.0, "acceleration": 19.9, "cylinders": 5.0, "displacement": 121.0, "weight": 2950.0}
-test6_datsun_310 {"horsepower": 65.0, "acceleration": 16.4, "cylinders": 4.0, "displacement": 86.0, "weight": 2019.0}
-test7_chevrolet_woody {"horsepower": 60.0, "acceleration": 22.1, "cylinders": 4.0, "displacement": 98.0, "weight": 2164.0}
-test8_volkswagen_1131_deluxe_sedan {"horsepower": 46.0, "acceleration": 20.5, "cylinders": 4.0, "displacement": 97.0, "weight": 1835.0}
-test9_plymouth_satellite_sebring {"horsepower": 105.0, "acceleration": 16.5, "cylinders": 6.0, "displacement": 225.0, "weight": 3613.0}
-test10_amc_matador {"horsepower": 120.0, "acceleration": 13.9, "cylinders": 8.0, "displacement": 304.0, "weight": 3962.0}
-test11_chevrolet_chevette {"horsepower": 52.0, "acceleration": 22.2, "cylinders": 4.0, "displacement": 85.0, "weight": 2035.0}
-test12_buick_century_special {"horsepower": 105.0, "acceleration": 15.8, "cylinders": 6.0, "displacement": 231.0, "weight": 3380.0}
-test13_ford_escort_2h {"horsepower": 65.0, "acceleration": 20.7, "cylinders": 4.0, "displacement": 98.0, "weight": 2380.0}
-test14_ford_torino_500 {"horsepower": 88.0, "acceleration": 15.5, "cylinders": 6.0, "displacement": 250.0, "weight": 3302.0}
-test15_dodge_aries_wagon_(sw) {"horsepower": 92.0, "acceleration": 14.4, "cylinders": 4.0, "displacement": 156.0, "weight": 2620.0}
-test16_plymouth_valiant {"horsepower": 105.0, "acceleration": 16.5, "cylinders": 6.0, "displacement": 225.0, "weight": 3121.0}
-test17_amc_pacer {"horsepower": 90.0, "acceleration": 17.0, "cylinders": 6.0, "displacement": 232.0, "weight": 3211.0}
-test18_honda_civic {"horsepower": 97.0, "acceleration": 15.0, "cylinders": 4.0, "displacement": 120.0, "weight": 2489.0}
-test19_ford_ltd {"horsepower": 148.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 351.0, "weight": 4657.0}
-test20_volkswagen_rabbit {"horsepower": 70.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 90.0, "weight": 1937.0}
-test21_honda_civic_1500_gl {"horsepower": 67.0, "acceleration": 13.8, "cylinders": 4.0, "displacement": 91.0, "weight": 1850.0}
-test22_chevrolet_impala {"horsepower": 165.0, "acceleration": 12.0, "cylinders": 8.0, "displacement": 350.0, "weight": 4209.0}
-test23_chevrolet_chevette {"horsepower": 63.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 98.0, "weight": 2051.0}
-test24_amc_concord {"horsepower": 90.0, "acceleration": 17.2, "cylinders": 6.0, "displacement": 232.0, "weight": 3210.0}
-test25_ford_pinto {"horsepower": 83.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 140.0, "weight": 2639.0}
-test26_ford_country_squire_(sw) {"horsepower": 142.0, "acceleration": 14.3, "cylinders": 8.0, "displacement": 351.0, "weight": 4054.0}
-test27_plymouth_valiant_custom {"horsepower": 95.0, "acceleration": 16.0, "cylinders": 6.0, "displacement": 225.0, "weight": 3264.0}
-test28_chevy_s-10 {"horsepower": 82.0, "acceleration": 19.4, "cylinders": 4.0, "displacement": 119.0, "weight": 2720.0}
-test29_maxda_rx3 {"horsepower": 90.0, "acceleration": 13.5, "cylinders": 3.0, "displacement": 70.0, "weight": 2124.0}
-test30_plymouth_sapporo {"horsepower": 105.0, "acceleration": 16.7, "cylinders": 4.0, "displacement": 156.0, "weight": 2745.0}
-test31_amc_hornet {"horsepower": 90.0, "acceleration": 17.6, "cylinders": 6.0, "displacement": 232.0, "weight": 3085.0}
-test32_chevrolet_caprice_classic {"horsepower": 145.0, "acceleration": 12.5, "cylinders": 8.0, "displacement": 305.0, "weight": 3880.0}
-test33_pontiac_sunbird_coupe {"horsepower": 88.0, "acceleration": 16.0, "cylinders": 4.0, "displacement": 151.0, "weight": 2740.0}
-test34_mercury_marquis_brougham {"horsepower": 198.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 429.0, "weight": 4952.0}
-test35_mercury_monarch_ghia {"horsepower": 139.0, "acceleration": 12.8, "cylinders": 8.0, "displacement": 302.0, "weight": 3570.0}
-test36_ford_country_squire_(sw) {"horsepower": 170.0, "acceleration": 12.0, "cylinders": 8.0, "displacement": 400.0, "weight": 4746.0}
-test37_audi_fox {"horsepower": 83.0, "acceleration": 16.5, "cylinders": 4.0, "displacement": 98.0, "weight": 2219.0}
-test38_triumph_tr7_coupe {"horsepower": 88.0, "acceleration": 15.1, "cylinders": 4.0, "displacement": 122.0, "weight": 2500.0}
-test39_dodge_d100 {"horsepower": 150.0, "acceleration": 14.0, "cylinders": 8.0, "displacement": 318.0, "weight": 3755.0}
-test40_mercury_cougar_brougham {"horsepower": 130.0, "acceleration": 14.9, "cylinders": 8.0, "displacement": 302.0, "weight": 4295.0}
-test41_pontiac_phoenix_lj {"horsepower": 105.0, "acceleration": 19.2, "cylinders": 6.0, "displacement": 231.0, "weight": 3535.0}
-test42_vw_rabbit_custom {"horsepower": 71.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 89.0, "weight": 1925.0}
-test43_peugeot_504 {"horsepower": 87.0, "acceleration": 17.5, "cylinders": 4.0, "displacement": 110.0, "weight": 2672.0}
-test44_datsun_310_gx {"horsepower": 67.0, "acceleration": 16.2, "cylinders": 4.0, "displacement": 91.0, "weight": 1995.0}
-test45_dodge_monaco_(sw) {"horsepower": 180.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 383.0, "weight": 4955.0}
-test46_chevrolet_monza_2+2 {"horsepower": 110.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 262.0, "weight": 3221.0}
-test47_capri_ii {"horsepower": 92.0, "acceleration": 14.9, "cylinders": 4.0, "displacement": 140.0, "weight": 2572.0}
-test48_mazda_rx2_coupe {"horsepower": 97.0, "acceleration": 13.5, "cylinders": 3.0, "displacement": 70.0, "weight": 2330.0}
-test49_plymouth_fury {"horsepower": 95.0, "acceleration": 19.0, "cylinders": 6.0, "displacement": 225.0, "weight": 3785.0}
-test50_plymouth_fury_iii {"horsepower": 215.0, "acceleration": 8.5, "cylinders": 8.0, "displacement": 440.0, "weight": 4312.0}
-test51_dodge_st._regis {"horsepower": 135.0, "acceleration": 15.2, "cylinders": 8.0, "displacement": 318.0, "weight": 3830.0}
-test52_amc_spirit_dl {"horsepower": 80.0, "acceleration": 15.0, "cylinders": 4.0, "displacement": 121.0, "weight": 2670.0}
-test53_peugeot_504_(sw) {"horsepower": 87.0, "acceleration": 19.5, "cylinders": 4.0, "displacement": 120.0, "weight": 2979.0}
-test54_chevroelt_chevelle_malibu {"horsepower": 105.0, "acceleration": 18.5, "cylinders": 6.0, "displacement": 250.0, "weight": 3897.0}
-test55_opel_1900 {"horsepower": 90.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 116.0, "weight": 2123.0}
-test56_dodge_challenger_se {"horsepower": 170.0, "acceleration": 10.0, "cylinders": 8.0, "displacement": 383.0, "weight": 3563.0}
-test57_vw_pickup {"horsepower": 52.0, "acceleration": 24.6, "cylinders": 4.0, "displacement": 97.0, "weight": 2130.0}
-test58_peugeot_604sl {"horsepower": 133.0, "acceleration": 15.8, "cylinders": 6.0, "displacement": 163.0, "weight": 3410.0}
-test59_mazda_glc_4 {"horsepower": 68.0, "acceleration": 16.0, "cylinders": 4.0, "displacement": 91.0, "weight": 1985.0}
-test60_audi_4000 {"horsepower": 78.0, "acceleration": 15.8, "cylinders": 4.0, "displacement": 97.0, "weight": 2188.0}
-test61_plymouth_duster {"horsepower": 95.0, "acceleration": 16.5, "cylinders": 6.0, "displacement": 198.0, "weight": 3102.0}
-test62_dodge_magnum_xe {"horsepower": 140.0, "acceleration": 13.7, "cylinders": 8.0, "displacement": 318.0, "weight": 4080.0}
-test63_buick_century_limited {"horsepower": 110.0, "acceleration": 16.4, "cylinders": 6.0, "displacement": 181.0, "weight": 2945.0}
-test64_chevrolet_monte_carlo_s {"horsepower": 145.0, "acceleration": 13.0, "cylinders": 8.0, "displacement": 350.0, "weight": 4082.0}
-test65_amc_matador {"horsepower": 150.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 304.0, "weight": 3672.0}
-test66_honda_accord {"horsepower": 75.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 107.0, "weight": 2205.0}
-test67_plymouth_volare {"horsepower": 100.0, "acceleration": 17.2, "cylinders": 6.0, "displacement": 225.0, "weight": 3430.0}
-test68_ford_galaxie_500 {"horsepower": 198.0, "acceleration": 10.0, "cylinders": 8.0, "displacement": 429.0, "weight": 4341.0}
-test69_chevrolet_citation {"horsepower": 110.0, "acceleration": 12.6, "cylinders": 6.0, "displacement": 173.0, "weight": 2725.0}
-test70_amc_ambassador_sst {"horsepower": 150.0, "acceleration": 11.5, "cylinders": 8.0, "displacement": 304.0, "weight": 3672.0}
-test71_ford_thunderbird {"horsepower": 149.0, "acceleration": 14.5, "cylinders": 8.0, "displacement": 351.0, "weight": 4335.0}
-test72_pontiac_phoenix {"horsepower": 90.0, "acceleration": 13.2, "cylinders": 4.0, "displacement": 151.0, "weight": 2556.0}
-test73_vw_rabbit {"horsepower": 76.0, "acceleration": 14.7, "cylinders": 4.0, "displacement": 98.0, "weight": 2144.0}
-test74_bmw_2002 {"horsepower": 113.0, "acceleration": 12.5, "cylinders": 4.0, "displacement": 121.0, "weight": 2234.0}
-test75_dodge_colt {"horsepower": 105.0, "acceleration": 14.4, "cylinders": 4.0, "displacement": 156.0, "weight": 2800.0}
-test76_mercury_capri_2000 {"horsepower": 86.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 122.0, "weight": 2220.0}
-test77_ford_galaxie_500 {"horsepower": 153.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 351.0, "weight": 4154.0}
-test78_volkswagen_rabbit_custom_diesel {"horsepower": 48.0, "acceleration": 21.5, "cylinders": 4.0, "displacement": 90.0, "weight": 1985.0}
-test79_dodge_aspen_se {"horsepower": 100.0, "acceleration": 17.7, "cylinders": 6.0, "displacement": 225.0, "weight": 3651.0}
-test80_mazda_glc_deluxe {"horsepower": 52.0, "acceleration": 19.4, "cylinders": 4.0, "displacement": 78.0, "weight": 1985.0}
-test81_mazda_glc_custom {"horsepower": 68.0, "acceleration": 17.6, "cylinders": 4.0, "displacement": 91.0, "weight": 1970.0}
-test82_audi_100ls {"horsepower": 91.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 114.0, "weight": 2582.0}
-test83_oldsmobile_delta_88_royale {"horsepower": 160.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 350.0, "weight": 4456.0}
-test84_ford_gran_torino {"horsepower": 137.0, "acceleration": 14.5, "cylinders": 8.0, "displacement": 302.0, "weight": 4042.0}
-test85_plymouth_cricket {"horsepower": 70.0, "acceleration": 20.5, "cylinders": 4.0, "displacement": 91.0, "weight": 1955.0}
-test86_plymouth_fury_iii {"horsepower": 150.0, "acceleration": 13.0, "cylinders": 8.0, "displacement": 318.0, "weight": 4096.0}
-test87_plymouth_horizon {"horsepower": 70.0, "acceleration": 13.2, "cylinders": 4.0, "displacement": 105.0, "weight": 2200.0}
-test88_peugeot_504 {"horsepower": 88.0, "acceleration": 21.9, "cylinders": 4.0, "displacement": 120.0, "weight": 3270.0}
-test89_dodge_dart_custom {"horsepower": 150.0, "acceleration": 11.0, "cylinders": 8.0, "displacement": 318.0, "weight": 3399.0}
-test90_pontiac_j2000_se_hatchback {"horsepower": 85.0, "acceleration": 16.2, "cylinders": 4.0, "displacement": 112.0, "weight": 2575.0}
-test91_toyota_starlet {"horsepower": 58.0, "acceleration": 16.9, "cylinders": 4.0, "displacement": 79.0, "weight": 1755.0}
-test92_mazda_glc_custom_l {"horsepower": 68.0, "acceleration": 18.2, "cylinders": 4.0, "displacement": 91.0, "weight": 2025.0}
-test93_fiat_124_tc {"horsepower": 75.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 116.0, "weight": 2246.0}
diff --git a/creg/test_data/auto-mpg.testresp b/creg/test_data/auto-mpg.testresp
deleted file mode 100644
index 4f2cad37..00000000
--- a/creg/test_data/auto-mpg.testresp
+++ /dev/null
@@ -1,93 +0,0 @@
-test1_fiat_124b 30.0
-test2_dodge_aspen 18.6
-test3_toyota_celica_gt_liftback 21.1
-test4_amc_matador 16.0
-test5_audi_5000s_(diesel) 36.4
-test6_datsun_310 37.2
-test7_chevrolet_woody 24.5
-test8_volkswagen_1131_deluxe_sedan 26.0
-test9_plymouth_satellite_sebring 18.0
-test10_amc_matador 15.5
-test11_chevrolet_chevette 29.0
-test12_buick_century_special 20.6
-test13_ford_escort_2h 29.9
-test14_ford_torino_500 19.0
-test15_dodge_aries_wagon_(sw) 25.8
-test16_plymouth_valiant 18.0
-test17_amc_pacer 19.0
-test18_honda_civic 24.0
-test19_ford_ltd 14.0
-test20_volkswagen_rabbit 29.0
-test21_honda_civic_1500_gl 44.6
-test22_chevrolet_impala 14.0
-test23_chevrolet_chevette 30.5
-test24_amc_concord 19.4
-test25_ford_pinto 23.0
-test26_ford_country_squire_(sw) 15.5
-test27_plymouth_valiant_custom 19.0
-test28_chevy_s-10 31.0
-test29_maxda_rx3 18.0
-test30_plymouth_sapporo 23.2
-test31_amc_hornet 22.5
-test32_chevrolet_caprice_classic 17.5
-test33_pontiac_sunbird_coupe 24.5
-test34_mercury_marquis_brougham 12.0
-test35_mercury_monarch_ghia 20.2
-test36_ford_country_squire_(sw) 13.0
-test37_audi_fox 29.0
-test38_triumph_tr7_coupe 35.0
-test39_dodge_d100 13.0
-test40_mercury_cougar_brougham 15.0
-test41_pontiac_phoenix_lj 19.2
-test42_vw_rabbit_custom 31.9
-test43_peugeot_504 25.0
-test44_datsun_310_gx 38.0
-test45_dodge_monaco_(sw) 12.0
-test46_chevrolet_monza_2+2 20.0
-test47_capri_ii 25.0
-test48_mazda_rx2_coupe 19.0
-test49_plymouth_fury 18.0
-test50_plymouth_fury_iii 14.0
-test51_dodge_st._regis 18.2
-test52_amc_spirit_dl 27.4
-test53_peugeot_504_(sw) 21.0
-test54_chevroelt_chevelle_malibu 16.0
-test55_opel_1900 28.0
-test56_dodge_challenger_se 15.0
-test57_vw_pickup 44.0
-test58_peugeot_604sl 16.2
-test59_mazda_glc_4 34.1
-test60_audi_4000 34.3
-test61_plymouth_duster 20.0
-test62_dodge_magnum_xe 17.5
-test63_buick_century_limited 25.0
-test64_chevrolet_monte_carlo_s 15.0
-test65_amc_matador 14.0
-test66_honda_accord 36.0
-test67_plymouth_volare 20.5
-test68_ford_galaxie_500 15.0
-test69_chevrolet_citation 23.5
-test70_amc_ambassador_sst 17.0
-test71_ford_thunderbird 16.0
-test72_pontiac_phoenix 33.5
-test73_vw_rabbit 41.5
-test74_bmw_2002 26.0
-test75_dodge_colt 27.9
-test76_mercury_capri_2000 23.0
-test77_ford_galaxie_500 14.0
-test78_volkswagen_rabbit_custom_diesel 43.1
-test79_dodge_aspen_se 20.0
-test80_mazda_glc_deluxe 32.8
-test81_mazda_glc_custom 31.0
-test82_audi_100ls 20.0
-test83_oldsmobile_delta_88_royale 12.0
-test84_ford_gran_torino 14.0
-test85_plymouth_cricket 26.0
-test86_plymouth_fury_iii 14.0
-test87_plymouth_horizon 34.2
-test88_peugeot_504 19.0
-test89_dodge_dart_custom 15.0
-test90_pontiac_j2000_se_hatchback 31.0
-test91_toyota_starlet 39.1
-test92_mazda_glc_custom_l 37.0
-test93_fiat_124_tc 26.0
diff --git a/creg/test_data/auto-mpg.trainfeat b/creg/test_data/auto-mpg.trainfeat
deleted file mode 100644
index 20b87d3f..00000000
--- a/creg/test_data/auto-mpg.trainfeat
+++ /dev/null
@@ -1,300 +0,0 @@
-train1_buick_century_350 {"horsepower": 175.0, "acceleration": 13.0, "cylinders": 8.0, "displacement": 350.0, "weight": 4100.0}
-train2_audi_100_ls {"horsepower": 90.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 107.0, "weight": 2430.0}
-train3_chrysler_newport_royal {"horsepower": 190.0, "acceleration": 12.5, "cylinders": 8.0, "displacement": 400.0, "weight": 4422.0}
-train4_mercury_zephyr_6 {"horsepower": 85.0, "acceleration": 18.2, "cylinders": 6.0, "displacement": 200.0, "weight": 2990.0}
-train5_volkswagen_model_111 {"horsepower": 60.0, "acceleration": 19.0, "cylinders": 4.0, "displacement": 97.0, "weight": 1834.0}
-train6_dodge_monaco_brougham {"horsepower": 145.0, "acceleration": 13.7, "cylinders": 8.0, "displacement": 318.0, "weight": 4140.0}
-train7_mercedes-benz_240d {"horsepower": 67.0, "acceleration": 21.8, "cylinders": 4.0, "displacement": 146.0, "weight": 3250.0}
-train8_datsun_510_(sw) {"horsepower": 92.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 97.0, "weight": 2288.0}
-train9_opel_manta {"horsepower": 75.0, "acceleration": 15.5, "cylinders": 4.0, "displacement": 116.0, "weight": 2158.0}
-train10_renault_12_(sw) {"horsepower": 69.0, "acceleration": 18.0, "cylinders": 4.0, "displacement": 96.0, "weight": 2189.0}
-train11_chevrolet_nova {"horsepower": 100.0, "acceleration": 17.0, "cylinders": 6.0, "displacement": 250.0, "weight": 3336.0}
-train12_plymouth_arrow_gs {"horsepower": 96.0, "acceleration": 15.5, "cylinders": 4.0, "displacement": 122.0, "weight": 2300.0}
-train13_toyota_mark_ii {"horsepower": 108.0, "acceleration": 15.5, "cylinders": 6.0, "displacement": 156.0, "weight": 2930.0}
-train14_chevrolet_caprice_classic {"horsepower": 150.0, "acceleration": 12.0, "cylinders": 8.0, "displacement": 400.0, "weight": 4464.0}
-train15_ford_maverick {"horsepower": 88.0, "acceleration": 16.5, "cylinders": 6.0, "displacement": 250.0, "weight": 3021.0}
-train16_pontiac_lemans_v6 {"horsepower": 115.0, "acceleration": 15.4, "cylinders": 6.0, "displacement": 231.0, "weight": 3245.0}
-train17_ford_granada_gl {"horsepower": 88.0, "acceleration": 17.1, "cylinders": 6.0, "displacement": 200.0, "weight": 3060.0}
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-train199_ford_pinto_(sw) {"horsepower": 86.0, "acceleration": 16.0, "cylinders": 4.0, "displacement": 122.0, "weight": 2395.0}
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-train203_honda_civic {"horsepower": 53.0, "acceleration": 17.4, "cylinders": 4.0, "displacement": 91.0, "weight": 1795.0}
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-train207_dodge_aspen {"horsepower": 90.0, "acceleration": 18.7, "cylinders": 6.0, "displacement": 225.0, "weight": 3381.0}
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-train209_plymouth_fury_iii {"horsepower": 150.0, "acceleration": 13.5, "cylinders": 8.0, "displacement": 318.0, "weight": 4135.0}
-train210_fiat_128 {"horsepower": 49.0, "acceleration": 19.5, "cylinders": 4.0, "displacement": 68.0, "weight": 1867.0}
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-train214_chevrolet_chevelle_malibu_classic {"horsepower": 100.0, "acceleration": 17.0, "cylinders": 6.0, "displacement": 250.0, "weight": 3781.0}
-train215_ford_ranger {"horsepower": 79.0, "acceleration": 18.6, "cylinders": 4.0, "displacement": 120.0, "weight": 2625.0}
-train216_vw_dasher_(diesel) {"horsepower": 48.0, "acceleration": 23.7, "cylinders": 4.0, "displacement": 90.0, "weight": 2335.0}
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-train218_buick_skyhawk {"horsepower": 110.0, "acceleration": 15.0, "cylinders": 6.0, "displacement": 231.0, "weight": 3039.0}
-train219_peugeot_504 {"horsepower": 88.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 120.0, "weight": 2957.0}
-train220_ford_f250 {"horsepower": 215.0, "acceleration": 14.0, "cylinders": 8.0, "displacement": 360.0, "weight": 4615.0}
-train221_dodge_diplomat {"horsepower": 140.0, "acceleration": 13.2, "cylinders": 8.0, "displacement": 318.0, "weight": 3735.0}
-train222_honda_civic_(auto) {"horsepower": 67.0, "acceleration": 15.7, "cylinders": 4.0, "displacement": 91.0, "weight": 1965.0}
-train223_chevrolet_caprice_classic {"horsepower": 130.0, "acceleration": 15.4, "cylinders": 8.0, "displacement": 305.0, "weight": 3840.0}
-train224_toyota_corolla_1200 {"horsepower": 65.0, "acceleration": 21.0, "cylinders": 4.0, "displacement": 71.0, "weight": 1836.0}
-train225_plymouth_volare_premier_v8 {"horsepower": 150.0, "acceleration": 13.2, "cylinders": 8.0, "displacement": 318.0, "weight": 3940.0}
-train226_opel_manta {"horsepower": 78.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 97.0, "weight": 2300.0}
-train227_mercedes_benz_300d {"horsepower": 77.0, "acceleration": 20.1, "cylinders": 5.0, "displacement": 183.0, "weight": 3530.0}
-train228_chevrolet_cavalier_wagon {"horsepower": 88.0, "acceleration": 18.6, "cylinders": 4.0, "displacement": 112.0, "weight": 2640.0}
-train229_vw_rabbit {"horsepower": 70.0, "acceleration": 14.2, "cylinders": 4.0, "displacement": 90.0, "weight": 1937.0}
-train230_toyota_corolla {"horsepower": 75.0, "acceleration": 15.2, "cylinders": 4.0, "displacement": 108.0, "weight": 2265.0}
-train231_buick_estate_wagon_(sw) {"horsepower": 225.0, "acceleration": 10.0, "cylinders": 8.0, "displacement": 455.0, "weight": 3086.0}
-train232_ford_f108 {"horsepower": 130.0, "acceleration": 15.0, "cylinders": 8.0, "displacement": 302.0, "weight": 3870.0}
-train233_oldsmobile_omega {"horsepower": 180.0, "acceleration": 11.0, "cylinders": 8.0, "displacement": 350.0, "weight": 3664.0}
-train234_oldsmobile_cutlass_ciera_(diesel) {"horsepower": 85.0, "acceleration": 17.0, "cylinders": 6.0, "displacement": 262.0, "weight": 3015.0}
-train235_chevrolet_impala {"horsepower": 220.0, "acceleration": 9.0, "cylinders": 8.0, "displacement": 454.0, "weight": 4354.0}
-train236_volkswagen_dasher {"horsepower": 71.0, "acceleration": 16.5, "cylinders": 4.0, "displacement": 90.0, "weight": 2223.0}
-train237_ford_fairmont_futura {"horsepower": 92.0, "acceleration": 16.4, "cylinders": 4.0, "displacement": 140.0, "weight": 2865.0}
-train238_datsun_210 {"horsepower": 65.0, "acceleration": 19.2, "cylinders": 4.0, "displacement": 85.0, "weight": 2020.0}
-train239_honda_accord_cvcc {"horsepower": 68.0, "acceleration": 18.5, "cylinders": 4.0, "displacement": 98.0, "weight": 2045.0}
-train240_mazda_glc {"horsepower": 65.0, "acceleration": 17.9, "cylinders": 4.0, "displacement": 86.0, "weight": 2110.0}
-train241_chevrolet_citation {"horsepower": 90.0, "acceleration": 16.5, "cylinders": 4.0, "displacement": 151.0, "weight": 2678.0}
-train242_datsun_810_maxima {"horsepower": 120.0, "acceleration": 13.8, "cylinders": 6.0, "displacement": 146.0, "weight": 2930.0}
-train243_ford_maverick {"horsepower": 85.0, "acceleration": 16.0, "cylinders": 6.0, "displacement": 200.0, "weight": 2587.0}
-train244_fiat_124_sport_coupe {"horsepower": 90.0, "acceleration": 15.5, "cylinders": 4.0, "displacement": 98.0, "weight": 2265.0}
-train245_chevrolet_vega {"horsepower": 72.0, "acceleration": 19.5, "cylinders": 4.0, "displacement": 140.0, "weight": 2401.0}
-train246_chevrolet_chevelle_malibu_classic {"horsepower": 140.0, "acceleration": 13.0, "cylinders": 8.0, "displacement": 305.0, "weight": 4215.0}
-train247_buick_skylark {"horsepower": 84.0, "acceleration": 16.4, "cylinders": 4.0, "displacement": 151.0, "weight": 2635.0}
-train248_renault_5_gtl {"horsepower": 58.0, "acceleration": 18.6, "cylinders": 4.0, "displacement": 79.0, "weight": 1825.0}
-train249_plymouth_duster {"horsepower": 95.0, "acceleration": 15.5, "cylinders": 6.0, "displacement": 198.0, "weight": 2833.0}
-train250_buick_regal_sport_coupe_(turbo) {"horsepower": 165.0, "acceleration": 13.4, "cylinders": 6.0, "displacement": 231.0, "weight": 3445.0}
-train251_mercury_lynx_l {"horsepower": 70.0, "acceleration": 17.3, "cylinders": 4.0, "displacement": 98.0, "weight": 2125.0}
-train252_dodge_aspen_6 {"horsepower": 110.0, "acceleration": 16.6, "cylinders": 6.0, "displacement": 225.0, "weight": 3360.0}
-train253_oldsmobile_vista_cruiser {"horsepower": 180.0, "acceleration": 12.5, "cylinders": 8.0, "displacement": 350.0, "weight": 4499.0}
-train254_amc_pacer_d/l {"horsepower": 95.0, "acceleration": 17.8, "cylinders": 6.0, "displacement": 258.0, "weight": 3193.0}
-train255_ford_fairmont_4 {"horsepower": 88.0, "acceleration": 17.3, "cylinders": 4.0, "displacement": 140.0, "weight": 2890.0}
-train256_chevrolet_chevelle_concours_(sw) {"horsepower": 130.0, "acceleration": 14.0, "cylinders": 8.0, "displacement": 307.0, "weight": 4098.0}
-train257_honda_accord {"horsepower": 72.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 107.0, "weight": 2290.0}
-train258_dodge_colt_hardtop {"horsepower": 80.0, "acceleration": 17.0, "cylinders": 4.0, "displacement": 97.5, "weight": 2126.0}
-train259_amc_hornet_sportabout_(sw) {"horsepower": 110.0, "acceleration": 13.5, "cylinders": 6.0, "displacement": 258.0, "weight": 2962.0}
-train260_toyota_corona {"horsepower": 95.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 113.0, "weight": 2228.0}
-train261_ford_fiesta {"horsepower": 66.0, "acceleration": 14.4, "cylinders": 4.0, "displacement": 98.0, "weight": 1800.0}
-train262_datsun_280-zx {"horsepower": 132.0, "acceleration": 11.4, "cylinders": 6.0, "displacement": 168.0, "weight": 2910.0}
-train263_chevrolet_impala {"horsepower": 165.0, "acceleration": 12.0, "cylinders": 8.0, "displacement": 350.0, "weight": 4274.0}
-train264_toyota_corolla {"horsepower": 75.0, "acceleration": 16.4, "cylinders": 4.0, "displacement": 97.0, "weight": 2155.0}
-train265_chevrolet_chevelle_malibu {"horsepower": 100.0, "acceleration": 15.5, "cylinders": 6.0, "displacement": 250.0, "weight": 3329.0}
-train266_volvo_diesel {"horsepower": 76.0, "acceleration": 19.6, "cylinders": 6.0, "displacement": 145.0, "weight": 3160.0}
-train267_pontiac_phoenix {"horsepower": 90.0, "acceleration": 18.0, "cylinders": 4.0, "displacement": 151.0, "weight": 2735.0}
-train268_dodge_colt_(sw) {"horsepower": 80.0, "acceleration": 15.0, "cylinders": 4.0, "displacement": 98.0, "weight": 2164.0}
-train269_vokswagen_rabbit {"horsepower": 62.0, "acceleration": 15.3, "cylinders": 4.0, "displacement": 89.0, "weight": 1845.0}
-train270_peugeot_504 {"horsepower": 71.0, "acceleration": 24.8, "cylinders": 4.0, "displacement": 141.0, "weight": 3190.0}
-train271_chevrolet_vega_2300 {"horsepower": 90.0, "acceleration": 15.5, "cylinders": 4.0, "displacement": 140.0, "weight": 2264.0}
-train272_ford_fairmont_(auto) {"horsepower": 85.0, "acceleration": 15.8, "cylinders": 6.0, "displacement": 200.0, "weight": 2965.0}
-train273_plymouth_grand_fury {"horsepower": 150.0, "acceleration": 14.5, "cylinders": 8.0, "displacement": 318.0, "weight": 4498.0}
-train274_plymouth_'cuda_340 {"horsepower": 160.0, "acceleration": 8.0, "cylinders": 8.0, "displacement": 340.0, "weight": 3609.0}
-train275_ford_granada_l {"horsepower": 112.0, "acceleration": 14.7, "cylinders": 6.0, "displacement": 232.0, "weight": 2835.0}
-train276_volkswagen_rabbit_custom {"horsepower": 78.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 97.0, "weight": 1940.0}
-train277_honda_civic_cvcc {"horsepower": 53.0, "acceleration": 17.5, "cylinders": 4.0, "displacement": 91.0, "weight": 1795.0}
-train278_chevrolet_nova_custom {"horsepower": 100.0, "acceleration": 18.0, "cylinders": 6.0, "displacement": 250.0, "weight": 3278.0}
-train279_honda_civic_cvcc {"horsepower": 60.0, "acceleration": 16.4, "cylinders": 4.0, "displacement": 91.0, "weight": 1800.0}
-train280_volkswagen_type_3 {"horsepower": 54.0, "acceleration": 23.5, "cylinders": 4.0, "displacement": 97.0, "weight": 2254.0}
-train281_toyota_corolla_tercel {"horsepower": 60.0, "acceleration": 18.8, "cylinders": 4.0, "displacement": 89.0, "weight": 1968.0}
-train282_datsun_pl510 {"horsepower": 88.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 97.0, "weight": 2130.0}
-train283_ford_maverick {"horsepower": 81.0, "acceleration": 17.6, "cylinders": 6.0, "displacement": 200.0, "weight": 3012.0}
-train284_dodge_omni {"horsepower": 75.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 105.0, "weight": 2230.0}
-train285_plymouth_volare_custom {"horsepower": 100.0, "acceleration": 17.7, "cylinders": 6.0, "displacement": 225.0, "weight": 3630.0}
-train286_datsun_710 {"horsepower": 61.0, "acceleration": 19.0, "cylinders": 4.0, "displacement": 83.0, "weight": 2003.0}
-train287_honda_civic_1300 {"horsepower": 60.0, "acceleration": 16.1, "cylinders": 4.0, "displacement": 81.0, "weight": 1760.0}
-train288_saab_99le {"horsepower": 110.0, "acceleration": 14.0, "cylinders": 4.0, "displacement": 121.0, "weight": 2660.0}
-train289_honda_prelude {"horsepower": 75.0, "acceleration": 14.4, "cylinders": 4.0, "displacement": 107.0, "weight": 2210.0}
-train290_buick_skylark_limited {"horsepower": 90.0, "acceleration": 16.0, "cylinders": 4.0, "displacement": 151.0, "weight": 2670.0}
-train291_pontiac_catalina {"horsepower": 225.0, "acceleration": 10.0, "cylinders": 8.0, "displacement": 455.0, "weight": 4425.0}
-train292_mazda_rx-4 {"horsepower": 110.0, "acceleration": 13.5, "cylinders": 3.0, "displacement": 80.0, "weight": 2720.0}
-train293_volkswagen_super_beetle {"horsepower": 46.0, "acceleration": 21.0, "cylinders": 4.0, "displacement": 97.0, "weight": 1950.0}
-train294_ford_fairmont_(man) {"horsepower": 88.0, "acceleration": 15.4, "cylinders": 4.0, "displacement": 140.0, "weight": 2720.0}
-train295_fiat_131 {"horsepower": 86.0, "acceleration": 15.5, "cylinders": 4.0, "displacement": 107.0, "weight": 2464.0}
-train296_ford_escort_4w {"horsepower": 65.0, "acceleration": 16.2, "cylinders": 4.0, "displacement": 98.0, "weight": 2045.0}
-train297_plymouth_horizon_miser {"horsepower": 63.0, "acceleration": 14.7, "cylinders": 4.0, "displacement": 105.0, "weight": 2125.0}
-train298_ford_mustang_ii {"horsepower": 129.0, "acceleration": 12.0, "cylinders": 8.0, "displacement": 302.0, "weight": 3169.0}
-train299_saab_99e {"horsepower": 95.0, "acceleration": 17.5, "cylinders": 4.0, "displacement": 104.0, "weight": 2375.0}
-train300_fiat_124b {"horsepower": 76.0, "acceleration": 14.5, "cylinders": 4.0, "displacement": 88.0, "weight": 2065.0}
diff --git a/creg/test_data/auto-mpg.trainresp b/creg/test_data/auto-mpg.trainresp
deleted file mode 100644
index ece7fa37..00000000
--- a/creg/test_data/auto-mpg.trainresp
+++ /dev/null
@@ -1,300 +0,0 @@
-train1_buick_century_350 13.0
-train2_audi_100_ls 24.0
-train3_chrysler_newport_royal 13.0
-train4_mercury_zephyr_6 19.8
-train5_volkswagen_model_111 27.0
-train6_dodge_monaco_brougham 15.5
-train7_mercedes-benz_240d 30.0
-train8_datsun_510_(sw) 28.0
-train9_opel_manta 24.0
-train10_renault_12_(sw) 26.0
-train11_chevrolet_nova 15.0
-train12_plymouth_arrow_gs 25.5
-train13_toyota_mark_ii 19.0
-train14_chevrolet_caprice_classic 13.0
-train15_ford_maverick 18.0
-train16_pontiac_lemans_v6 21.5
-train17_ford_granada_gl 20.2
-train18_chevrolet_monte_carlo_landau 15.5
-train19_subaru 26.0
-train20_volkswagen_411_(sw) 22.0
-train21_chrysler_lebaron_salon 17.6
-train22_volkswagen_jetta 33.0
-train23_dodge_coronet_brougham 16.0
-train24_pontiac_safari_(sw) 13.0
-train25_mazda_rx-7_gs 23.7
-train26_datsun_210 40.8
-train27_vw_rabbit_c_(diesel) 44.3
-train28_nissan_stanza_xe 36.0
-train29_audi_5000 20.3
-train30_chevrolet_malibu 13.0
-train31_mercury_capri_v6 21.0
-train32_datsun_b210_gx 39.4
-train33_volkswagen_dasher 26.0
-train34_volvo_145e_(sw) 18.0
-train35_chrysler_lebaron_medallion 26.0
-train36_pontiac_catalina 16.0
-train37_toyota_tercel 37.7
-train38_datsun_f-10_hatchback 33.5
-train39_chrysler_lebaron_town_@_country_(sw) 18.5
-train40_buick_century 22.4
-train41_amc_matador_(sw) 15.0
-train42_honda_civic 38.0
-train43_dodge_coronet_custom_(sw) 14.0
-train44_bmw_320i 21.5
-train45_mercury_marquis 11.0
-train46_amc_matador_(sw) 14.0
-train47_ford_ltd 13.0
-train48_toyota_corolla_1200 31.0
-train49_amc_ambassador_brougham 13.0
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-train67_chevrolet_nova 18.0
-train68_hi_1200d 9.0
-train69_ford_country 12.0
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-train72_ford_pinto_runabout 21.0
-train73_chevrolet_monte_carlo_landau 19.2
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-train75_pontiac_firebird 19.0
-train76_chevrolet_cavalier_2-door 34.0
-train77_mercedes-benz_280s 16.5
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-train84_cadillac_eldorado 23.0
-train85_mercury_monarch 15.0
-train86_buick_skylark 20.5
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-train88_chevrolet_vega 20.0
-train89_ford_torino 17.0
-train90_chevrolet_chevelle_malibu 18.0
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-train93_volvo_244dl 22.0
-train94_opel_1900 25.0
-train95_peugeot_304 30.0
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-train98_volvo_245 20.0
-train99_chevrolet_impala 11.0
-train100_chevrolet_bel_air 15.0
-train101_datsun_pl510 27.0
-train102_saab_99gle 21.6
-train103_renault_12tl 27.0
-train104_pontiac_catalina 14.0
-train105_subaru 32.3
-train106_chevrolet_chevette 32.1
-train107_saab_99le 25.0
-train108_amc_rebel_sst 16.0
-train109_ford_gran_torino 16.0
-train110_ford_mustang_ii_2+2 25.5
-train111_ford_pinto 26.0
-train112_toyota_corolla 32.4
-train113_toyota_carina 20.0
-train114_amc_hornet 18.0
-train115_plymouth_horizon_4 34.7
-train116_chevrolet_nova 22.0
-train117_fiat_128 24.0
-train118_dodge_coronet_custom 15.0
-train119_volkswagen_rabbit 29.5
-train120_chevrolet_camaro 27.0
-train121_ford_gran_torino_(sw) 13.0
-train122_subaru_dl 30.0
-train123_mazda_626 31.3
-train124_oldsmobile_cutlass_salon_brougham 23.9
-train125_volvo_144ea 19.0
-train126_plymouth_satellite 18.0
-train127_amc_gremlin 18.0
-train128_chevrolet_malibu_classic_(sw) 19.2
-train129_toyota_corolla 29.0
-train130_buick_skylark_320 15.0
-train131_toyota_corona_mark_ii 24.0
-train132_ford_gran_torino 14.5
-train133_dodge_colt 26.0
-train134_pontiac_ventura_sj 18.5
-train135_oldsmobile_cutlass_ls 26.6
-train136_toyouta_corona_mark_ii_(sw) 23.0
-train137_amc_gremlin 19.0
-train138_chevrolet_malibu 20.5
-train139_oldsmobile_starfire_sx 23.8
-train140_amc_ambassador_dpl 15.0
-train141_volkswagen_scirocco 31.5
-train142_plymouth_satellite_custom_(sw) 14.0
-train143_toyota_corolla_liftback 26.0
-train144_ford_fairmont 26.4
-train145_plymouth_fury_gran_sedan 14.0
-train146_buick_century_luxus_(sw) 13.0
-train147_ford_granada_ghia 18.0
-train148_dodge_charger_2.2 36.0
-train149_chevrolet_concours 17.5
-train150_toyota_corona 27.5
-train151_pontiac_grand_prix_lj 16.0
-train152_dodge_colt_m/m 33.5
-train153_pontiac_astro 23.0
-train154_amc_gremlin 21.0
-train155_fiat_strada_custom 37.3
-train156_toyota_corona_hardtop 24.0
-train157_datsun_b210 31.0
-train158_volkswagen_dasher 30.5
-train159_plymouth_duster 23.0
-train160_mazda_626 31.6
-train161_buick_lesabre_custom 13.0
-train162_chevrolet_monte_carlo 15.0
-train163_peugeot_505s_turbo_diesel 28.1
-train164_datsun_610 22.0
-train165_ford_granada 18.5
-train166_pontiac_grand_prix 16.0
-train167_cadillac_seville 16.5
-train168_amc_concord 24.3
-train169_ford_mustang_gl 27.0
-train170_amc_matador 15.0
-train171_ford_gran_torino_(sw) 14.0
-train172_datsun_510_hatchback 37.0
-train173_dodge_rampage 32.0
-train174_datsun_b-210 32.0
-train175_datsun_210_mpg 37.0
-train176_plymouth_horizon_tc3 34.5
-train177_ford_pinto 19.0
-train178_chrysler_new_yorker_brougham 13.0
-train179_chrysler_cordoba 15.5
-train180_oldsmobile_cutlass_salon_brougham 19.9
-train181_plymouth_satellite_custom 16.0
-train182_maxda_glc_deluxe 34.1
-train183_datsun_1200 35.0
-train184_ford_pinto 26.5
-train185_volkswagen_rabbit_l 36.0
-train186_audi_100ls 23.0
-train187_chevrolet_citation 28.8
-train188_buick_electra_225_custom 12.0
-train189_datsun_200sx 32.9
-train190_dodge_colt_hatchback_custom 35.7
-train191_honda_accord_lx 29.5
-train192_plymouth_custom_suburb 13.0
-train193_toyota_mark_ii 20.0
-train194_oldsmobile_omega_brougham 26.8
-train195_ford_ltd_landau 17.6
-train196_chevy_c10 13.0
-train197_dodge_colt 28.0
-train198_oldsmobile_cutlass_supreme 17.0
-train199_ford_pinto_(sw) 22.0
-train200_chevrolet_vega 25.0
-train201_pontiac_catalina_brougham 14.0
-train202_ford_futura 18.1
-train203_honda_civic 33.0
-train204_ford_mustang 18.0
-train205_chevrolet_vega_(sw) 22.0
-train206_buick_century 17.0
-train207_dodge_aspen 19.1
-train208_subaru_dl 33.8
-train209_plymouth_fury_iii 15.0
-train210_fiat_128 29.0
-train211_volvo_264gl 17.0
-train212_dodge_aries_se 29.0
-train213_datsun_510 27.2
-train214_chevrolet_chevelle_malibu_classic 16.0
-train215_ford_ranger 28.0
-train216_vw_dasher_(diesel) 43.4
-train217_chevy_c20 10.0
-train218_buick_skyhawk 21.0
-train219_peugeot_504 23.0
-train220_ford_f250 10.0
-train221_dodge_diplomat 19.4
-train222_honda_civic_(auto) 32.0
-train223_chevrolet_caprice_classic 17.0
-train224_toyota_corolla_1200 32.0
-train225_plymouth_volare_premier_v8 13.0
-train226_opel_manta 26.0
-train227_mercedes_benz_300d 25.4
-train228_chevrolet_cavalier_wagon 27.0
-train229_vw_rabbit 29.0
-train230_toyota_corolla 32.2
-train231_buick_estate_wagon_(sw) 14.0
-train232_ford_f108 13.0
-train233_oldsmobile_omega 11.0
-train234_oldsmobile_cutlass_ciera_(diesel) 38.0
-train235_chevrolet_impala 14.0
-train236_volkswagen_dasher 25.0
-train237_ford_fairmont_futura 24.0
-train238_datsun_210 31.8
-train239_honda_accord_cvcc 31.5
-train240_mazda_glc 46.6
-train241_chevrolet_citation 28.0
-train242_datsun_810_maxima 24.2
-train243_ford_maverick 21.0
-train244_fiat_124_sport_coupe 26.0
-train245_chevrolet_vega 21.0
-train246_chevrolet_chevelle_malibu_classic 17.5
-train247_buick_skylark 26.6
-train248_renault_5_gtl 36.0
-train249_plymouth_duster 22.0
-train250_buick_regal_sport_coupe_(turbo) 17.7
-train251_mercury_lynx_l 36.0
-train252_dodge_aspen_6 20.6
-train253_oldsmobile_vista_cruiser 12.0
-train254_amc_pacer_d/l 17.5
-train255_ford_fairmont_4 22.3
-train256_chevrolet_chevelle_concours_(sw) 13.0
-train257_honda_accord 32.4
-train258_dodge_colt_hardtop 25.0
-train259_amc_hornet_sportabout_(sw) 18.0
-train260_toyota_corona 25.0
-train261_ford_fiesta 36.1
-train262_datsun_280-zx 32.7
-train263_chevrolet_impala 13.0
-train264_toyota_corolla 28.0
-train265_chevrolet_chevelle_malibu 17.0
-train266_volvo_diesel 30.7
-train267_pontiac_phoenix 27.0
-train268_dodge_colt_(sw) 28.0
-train269_vokswagen_rabbit 29.8
-train270_peugeot_504 27.2
-train271_chevrolet_vega_2300 28.0
-train272_ford_fairmont_(auto) 20.2
-train273_plymouth_grand_fury 16.0
-train274_plymouth_'cuda_340 14.0
-train275_ford_granada_l 22.0
-train276_volkswagen_rabbit_custom 29.0
-train277_honda_civic_cvcc 33.0
-train278_chevrolet_nova_custom 16.0
-train279_honda_civic_cvcc 36.1
-train280_volkswagen_type_3 23.0
-train281_toyota_corolla_tercel 38.1
-train282_datsun_pl510 27.0
-train283_ford_maverick 24.0
-train284_dodge_omni 30.9
-train285_plymouth_volare_custom 19.0
-train286_datsun_710 32.0
-train287_honda_civic_1300 35.1
-train288_saab_99le 24.0
-train289_honda_prelude 33.7
-train290_buick_skylark_limited 28.4
-train291_pontiac_catalina 14.0
-train292_mazda_rx-4 21.5
-train293_volkswagen_super_beetle 26.0
-train294_ford_fairmont_(man) 25.1
-train295_fiat_131 28.0
-train296_ford_escort_4w 34.4
-train297_plymouth_horizon_miser 38.0
-train298_ford_mustang_ii 13.0
-train299_saab_99e 25.0
-train300_fiat_124b 30.0
diff --git a/creg/test_data/iris.testfeat b/creg/test_data/iris.testfeat
deleted file mode 100644
index f7528f81..00000000
--- a/creg/test_data/iris.testfeat
+++ /dev/null
@@ -1,50 +0,0 @@
-100 {"sepal-length": 4.9, "sepal-width": 2.5, "petal-length": 4.5, "petal-width": 1.7}
-101 {"sepal-length": 6.5, "sepal-width": 3.0, "petal-length": 5.2, "petal-width": 2.0}
-102 {"sepal-length": 4.4, "sepal-width": 3.0, "petal-length": 1.3, "petal-width": 0.2}
-103 {"sepal-length": 5.0, "sepal-width": 3.4, "petal-length": 1.5, "petal-width": 0.2}
-104 {"sepal-length": 5.0, "sepal-width": 3.0, "petal-length": 1.6, "petal-width": 0.2}
-105 {"sepal-length": 5.1, "sepal-width": 3.4, "petal-length": 1.5, "petal-width": 0.2}
-106 {"sepal-length": 5.5, "sepal-width": 2.3, "petal-length": 4.0, "petal-width": 1.3}
-107 {"sepal-length": 5.5, "sepal-width": 2.6, "petal-length": 4.4, "petal-width": 1.2}
-108 {"sepal-length": 5.4, "sepal-width": 3.4, "petal-length": 1.7, "petal-width": 0.2}
-109 {"sepal-length": 5.5, "sepal-width": 2.4, "petal-length": 3.7, "petal-width": 1.0}
-110 {"sepal-length": 6.7, "sepal-width": 3.0, "petal-length": 5.0, "petal-width": 1.7}
-111 {"sepal-length": 6.4, "sepal-width": 2.8, "petal-length": 5.6, "petal-width": 2.2}
-112 {"sepal-length": 5.5, "sepal-width": 4.2, "petal-length": 1.4, "petal-width": 0.2}
-113 {"sepal-length": 5.9, "sepal-width": 3.0, "petal-length": 4.2, "petal-width": 1.5}
-114 {"sepal-length": 4.9, "sepal-width": 3.1, "petal-length": 1.5, "petal-width": 0.1}
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-116 {"sepal-length": 5.0, "sepal-width": 3.6, "petal-length": 1.4, "petal-width": 0.2}
-117 {"sepal-length": 6.3, "sepal-width": 2.3, "petal-length": 4.4, "petal-width": 1.3}
-118 {"sepal-length": 6.7, "sepal-width": 3.3, "petal-length": 5.7, "petal-width": 2.1}
-119 {"sepal-length": 5.8, "sepal-width": 2.7, "petal-length": 5.1, "petal-width": 1.9}
-120 {"sepal-length": 5.2, "sepal-width": 2.7, "petal-length": 3.9, "petal-width": 1.4}
-121 {"sepal-length": 5.0, "sepal-width": 3.5, "petal-length": 1.6, "petal-width": 0.6}
-122 {"sepal-length": 5.0, "sepal-width": 3.2, "petal-length": 1.2, "petal-width": 0.2}
-123 {"sepal-length": 6.7, "sepal-width": 3.0, "petal-length": 5.2, "petal-width": 2.3}
-124 {"sepal-length": 5.5, "sepal-width": 2.5, "petal-length": 4.0, "petal-width": 1.3}
-125 {"sepal-length": 5.6, "sepal-width": 3.0, "petal-length": 4.5, "petal-width": 1.5}
-126 {"sepal-length": 6.6, "sepal-width": 3.0, "petal-length": 4.4, "petal-width": 1.4}
-127 {"sepal-length": 5.1, "sepal-width": 3.8, "petal-length": 1.6, "petal-width": 0.2}
-128 {"sepal-length": 5.9, "sepal-width": 3.0, "petal-length": 5.1, "petal-width": 1.8}
-129 {"sepal-length": 6.2, "sepal-width": 3.4, "petal-length": 5.4, "petal-width": 2.3}
-130 {"sepal-length": 5.6, "sepal-width": 2.8, "petal-length": 4.9, "petal-width": 2.0}
-131 {"sepal-length": 5.7, "sepal-width": 2.9, "petal-length": 4.2, "petal-width": 1.3}
-132 {"sepal-length": 6.2, "sepal-width": 2.9, "petal-length": 4.3, "petal-width": 1.3}
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-134 {"sepal-length": 5.4, "sepal-width": 3.9, "petal-length": 1.7, "petal-width": 0.4}
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-136 {"sepal-length": 6.5, "sepal-width": 3.2, "petal-length": 5.1, "petal-width": 2.0}
-137 {"sepal-length": 5.1, "sepal-width": 2.5, "petal-length": 3.0, "petal-width": 1.1}
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diff --git a/creg/test_data/iris.testresp b/creg/test_data/iris.testresp
deleted file mode 100644
index 0952e4da..00000000
--- a/creg/test_data/iris.testresp
+++ /dev/null
@@ -1,50 +0,0 @@
-100 Iris-virginica
-101 Iris-virginica
-102 Iris-setosa
-103 Iris-setosa
-104 Iris-setosa
-105 Iris-setosa
-106 Iris-versicolor
-107 Iris-versicolor
-108 Iris-setosa
-109 Iris-versicolor
-110 Iris-versicolor
-111 Iris-virginica
-112 Iris-setosa
-113 Iris-versicolor
-114 Iris-setosa
-115 Iris-virginica
-116 Iris-setosa
-117 Iris-versicolor
-118 Iris-virginica
-119 Iris-virginica
-120 Iris-versicolor
-121 Iris-setosa
-122 Iris-setosa
-123 Iris-virginica
-124 Iris-versicolor
-125 Iris-versicolor
-126 Iris-versicolor
-127 Iris-setosa
-128 Iris-virginica
-129 Iris-virginica
-130 Iris-virginica
-131 Iris-versicolor
-132 Iris-versicolor
-133 Iris-versicolor
-134 Iris-setosa
-135 Iris-virginica
-136 Iris-virginica
-137 Iris-versicolor
-138 Iris-setosa
-139 Iris-virginica
-140 Iris-virginica
-141 Iris-virginica
-142 Iris-versicolor
-143 Iris-setosa
-144 Iris-setosa
-145 Iris-setosa
-146 Iris-versicolor
-147 Iris-virginica
-148 Iris-virginica
-149 Iris-virginica
diff --git a/creg/test_data/iris.trainfeat b/creg/test_data/iris.trainfeat
deleted file mode 100644
index a930a446..00000000
--- a/creg/test_data/iris.trainfeat
+++ /dev/null
@@ -1,100 +0,0 @@
-0 {"sepal-length": 5.4, "sepal-width": 3.0, "petal-length": 4.5, "petal-width": 1.5}
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-28 {"sepal-length": 5.8, "sepal-width": 2.7, "petal-length": 3.9, "petal-width": 1.2}
-29 {"sepal-length": 5.6, "sepal-width": 2.5, "petal-length": 3.9, "petal-width": 1.1}
-30 {"sepal-length": 5.1, "sepal-width": 3.5, "petal-length": 1.4, "petal-width": 0.3}
-31 {"sepal-length": 5.6, "sepal-width": 2.7, "petal-length": 4.2, "petal-width": 1.3}
-32 {"sepal-length": 5.1, "sepal-width": 3.5, "petal-length": 1.4, "petal-width": 0.2}
-33 {"sepal-length": 6.4, "sepal-width": 2.7, "petal-length": 5.3, "petal-width": 1.9}
-34 {"sepal-length": 5.8, "sepal-width": 4.0, "petal-length": 1.2, "petal-width": 0.2}
-35 {"sepal-length": 5.2, "sepal-width": 3.4, "petal-length": 1.4, "petal-width": 0.2}
-36 {"sepal-length": 7.6, "sepal-width": 3.0, "petal-length": 6.6, "petal-width": 2.1}
-37 {"sepal-length": 5.8, "sepal-width": 2.7, "petal-length": 5.1, "petal-width": 1.9}
-38 {"sepal-length": 6.0, "sepal-width": 2.2, "petal-length": 4.0, "petal-width": 1.0}
-39 {"sepal-length": 7.7, "sepal-width": 3.0, "petal-length": 6.1, "petal-width": 2.3}
-40 {"sepal-length": 5.1, "sepal-width": 3.7, "petal-length": 1.5, "petal-width": 0.4}
-41 {"sepal-length": 6.1, "sepal-width": 2.6, "petal-length": 5.6, "petal-width": 1.4}
-42 {"sepal-length": 6.7, "sepal-width": 3.1, "petal-length": 5.6, "petal-width": 2.4}
-43 {"sepal-length": 7.7, "sepal-width": 3.8, "petal-length": 6.7, "petal-width": 2.2}
-44 {"sepal-length": 5.1, "sepal-width": 3.3, "petal-length": 1.7, "petal-width": 0.5}
-45 {"sepal-length": 6.3, "sepal-width": 2.8, "petal-length": 5.1, "petal-width": 1.5}
-46 {"sepal-length": 5.0, "sepal-width": 2.0, "petal-length": 3.5, "petal-width": 1.0}
-47 {"sepal-length": 5.1, "sepal-width": 3.8, "petal-length": 1.5, "petal-width": 0.3}
-48 {"sepal-length": 4.9, "sepal-width": 3.1, "petal-length": 1.5, "petal-width": 0.1}
-49 {"sepal-length": 6.1, "sepal-width": 3.0, "petal-length": 4.9, "petal-width": 1.8}
-50 {"sepal-length": 6.4, "sepal-width": 2.8, "petal-length": 5.6, "petal-width": 2.1}
-51 {"sepal-length": 6.5, "sepal-width": 3.0, "petal-length": 5.5, "petal-width": 1.8}
-52 {"sepal-length": 6.1, "sepal-width": 2.8, "petal-length": 4.7, "petal-width": 1.2}
-53 {"sepal-length": 6.1, "sepal-width": 2.8, "petal-length": 4.0, "petal-width": 1.3}
-54 {"sepal-length": 4.9, "sepal-width": 3.1, "petal-length": 1.5, "petal-width": 0.1}
-55 {"sepal-length": 6.8, "sepal-width": 2.8, "petal-length": 4.8, "petal-width": 1.4}
-56 {"sepal-length": 6.3, "sepal-width": 2.7, "petal-length": 4.9, "petal-width": 1.8}
-57 {"sepal-length": 4.6, "sepal-width": 3.2, "petal-length": 1.4, "petal-width": 0.2}
-58 {"sepal-length": 6.3, "sepal-width": 3.4, "petal-length": 5.6, "petal-width": 2.4}
-59 {"sepal-length": 5.7, "sepal-width": 4.4, "petal-length": 1.5, "petal-width": 0.4}
-60 {"sepal-length": 6.4, "sepal-width": 2.9, "petal-length": 4.3, "petal-width": 1.3}
-61 {"sepal-length": 7.2, "sepal-width": 3.6, "petal-length": 6.1, "petal-width": 2.5}
-62 {"sepal-length": 5.8, "sepal-width": 2.7, "petal-length": 4.1, "petal-width": 1.0}
-63 {"sepal-length": 6.0, "sepal-width": 3.0, "petal-length": 4.8, "petal-width": 1.8}
-64 {"sepal-length": 4.7, "sepal-width": 3.2, "petal-length": 1.6, "petal-width": 0.2}
-65 {"sepal-length": 6.9, "sepal-width": 3.2, "petal-length": 5.7, "petal-width": 2.3}
-66 {"sepal-length": 6.4, "sepal-width": 3.2, "petal-length": 4.5, "petal-width": 1.5}
-67 {"sepal-length": 6.9, "sepal-width": 3.1, "petal-length": 5.4, "petal-width": 2.1}
-68 {"sepal-length": 5.2, "sepal-width": 3.5, "petal-length": 1.5, "petal-width": 0.2}
-69 {"sepal-length": 5.3, "sepal-width": 3.7, "petal-length": 1.5, "petal-width": 0.2}
-70 {"sepal-length": 5.5, "sepal-width": 2.4, "petal-length": 3.8, "petal-width": 1.1}
-71 {"sepal-length": 4.8, "sepal-width": 3.4, "petal-length": 1.9, "petal-width": 0.2}
-72 {"sepal-length": 5.7, "sepal-width": 2.8, "petal-length": 4.1, "petal-width": 1.3}
-73 {"sepal-length": 4.9, "sepal-width": 2.4, "petal-length": 3.3, "petal-width": 1.0}
-74 {"sepal-length": 6.2, "sepal-width": 2.2, "petal-length": 4.5, "petal-width": 1.5}
-75 {"sepal-length": 6.7, "sepal-width": 3.3, "petal-length": 5.7, "petal-width": 2.5}
-76 {"sepal-length": 6.1, "sepal-width": 3.0, "petal-length": 4.6, "petal-width": 1.4}
-77 {"sepal-length": 4.6, "sepal-width": 3.6, "petal-length": 1.0, "petal-width": 0.2}
-78 {"sepal-length": 7.0, "sepal-width": 3.2, "petal-length": 4.7, "petal-width": 1.4}
-79 {"sepal-length": 6.6, "sepal-width": 2.9, "petal-length": 4.6, "petal-width": 1.3}
-80 {"sepal-length": 5.4, "sepal-width": 3.7, "petal-length": 1.5, "petal-width": 0.2}
-81 {"sepal-length": 4.8, "sepal-width": 3.0, "petal-length": 1.4, "petal-width": 0.3}
-82 {"sepal-length": 7.2, "sepal-width": 3.0, "petal-length": 5.8, "petal-width": 1.6}
-83 {"sepal-length": 7.1, "sepal-width": 3.0, "petal-length": 5.9, "petal-width": 2.1}
-84 {"sepal-length": 6.9, "sepal-width": 3.1, "petal-length": 4.9, "petal-width": 1.5}
-85 {"sepal-length": 4.8, "sepal-width": 3.0, "petal-length": 1.4, "petal-width": 0.1}
-86 {"sepal-length": 7.3, "sepal-width": 2.9, "petal-length": 6.3, "petal-width": 1.8}
-87 {"sepal-length": 6.0, "sepal-width": 2.7, "petal-length": 5.1, "petal-width": 1.6}
-88 {"sepal-length": 6.8, "sepal-width": 3.2, "petal-length": 5.9, "petal-width": 2.3}
-89 {"sepal-length": 4.6, "sepal-width": 3.1, "petal-length": 1.5, "petal-width": 0.2}
-90 {"sepal-length": 4.8, "sepal-width": 3.1, "petal-length": 1.6, "petal-width": 0.2}
-91 {"sepal-length": 5.0, "sepal-width": 2.3, "petal-length": 3.3, "petal-width": 1.0}
-92 {"sepal-length": 6.9, "sepal-width": 3.1, "petal-length": 5.1, "petal-width": 2.3}
-93 {"sepal-length": 5.7, "sepal-width": 3.0, "petal-length": 4.2, "petal-width": 1.2}
-94 {"sepal-length": 5.1, "sepal-width": 3.8, "petal-length": 1.9, "petal-width": 0.4}
-95 {"sepal-length": 6.0, "sepal-width": 2.9, "petal-length": 4.5, "petal-width": 1.5}
-96 {"sepal-length": 4.8, "sepal-width": 3.4, "petal-length": 1.6, "petal-width": 0.2}
-97 {"sepal-length": 5.2, "sepal-width": 4.1, "petal-length": 1.5, "petal-width": 0.1}
-98 {"sepal-length": 5.6, "sepal-width": 2.9, "petal-length": 3.6, "petal-width": 1.3}
-99 {"sepal-length": 5.8, "sepal-width": 2.6, "petal-length": 4.0, "petal-width": 1.2}
diff --git a/creg/test_data/iris.trainresp b/creg/test_data/iris.trainresp
deleted file mode 100644
index d77bc6a2..00000000
--- a/creg/test_data/iris.trainresp
+++ /dev/null
@@ -1,100 +0,0 @@
-0 Iris-versicolor
-1 Iris-setosa
-2 Iris-setosa
-3 Iris-versicolor
-4 Iris-virginica
-5 Iris-virginica
-6 Iris-versicolor
-7 Iris-virginica
-8 Iris-versicolor
-9 Iris-versicolor
-10 Iris-versicolor
-11 Iris-versicolor
-12 Iris-versicolor
-13 Iris-virginica
-14 Iris-setosa
-15 Iris-setosa
-16 Iris-virginica
-17 Iris-virginica
-18 Iris-setosa
-19 Iris-setosa
-20 Iris-versicolor
-21 Iris-virginica
-22 Iris-virginica
-23 Iris-setosa
-24 Iris-virginica
-25 Iris-setosa
-26 Iris-setosa
-27 Iris-setosa
-28 Iris-versicolor
-29 Iris-versicolor
-30 Iris-setosa
-31 Iris-versicolor
-32 Iris-setosa
-33 Iris-virginica
-34 Iris-setosa
-35 Iris-setosa
-36 Iris-virginica
-37 Iris-virginica
-38 Iris-versicolor
-39 Iris-virginica
-40 Iris-setosa
-41 Iris-virginica
-42 Iris-virginica
-43 Iris-virginica
-44 Iris-setosa
-45 Iris-virginica
-46 Iris-versicolor
-47 Iris-setosa
-48 Iris-setosa
-49 Iris-virginica
-50 Iris-virginica
-51 Iris-virginica
-52 Iris-versicolor
-53 Iris-versicolor
-54 Iris-setosa
-55 Iris-versicolor
-56 Iris-virginica
-57 Iris-setosa
-58 Iris-virginica
-59 Iris-setosa
-60 Iris-versicolor
-61 Iris-virginica
-62 Iris-versicolor
-63 Iris-virginica
-64 Iris-setosa
-65 Iris-virginica
-66 Iris-versicolor
-67 Iris-virginica
-68 Iris-setosa
-69 Iris-setosa
-70 Iris-versicolor
-71 Iris-setosa
-72 Iris-versicolor
-73 Iris-versicolor
-74 Iris-versicolor
-75 Iris-virginica
-76 Iris-versicolor
-77 Iris-setosa
-78 Iris-versicolor
-79 Iris-versicolor
-80 Iris-setosa
-81 Iris-setosa
-82 Iris-virginica
-83 Iris-virginica
-84 Iris-versicolor
-85 Iris-setosa
-86 Iris-virginica
-87 Iris-versicolor
-88 Iris-virginica
-89 Iris-setosa
-90 Iris-setosa
-91 Iris-versicolor
-92 Iris-virginica
-93 Iris-versicolor
-94 Iris-setosa
-95 Iris-versicolor
-96 Iris-setosa
-97 Iris-setosa
-98 Iris-versicolor
-99 Iris-versicolor
diff --git a/creg/test_data/shuttle.testfeat b/creg/test_data/shuttle.testfeat
deleted file mode 100644
index 31c07017..00000000
--- a/creg/test_data/shuttle.testfeat
+++ /dev/null
@@ -1 +0,0 @@
-Challenger {"temp":31, "date":9524}
diff --git a/creg/test_data/shuttle.testresp b/creg/test_data/shuttle.testresp
deleted file mode 100644
index 249e84c7..00000000
--- a/creg/test_data/shuttle.testresp
+++ /dev/null
@@ -1 +0,0 @@
-Challenger 2
diff --git a/creg/test_data/shuttle.trainfeat b/creg/test_data/shuttle.trainfeat
deleted file mode 100644
index c17d0f7f..00000000
--- a/creg/test_data/shuttle.trainfeat
+++ /dev/null
@@ -1,23 +0,0 @@
-1 {"temp":66, "date":7772}
-2 {"temp":70, "date":7986}
-3 {"temp":69, "date":8116}
-5 {"temp":68, "date":8350}
-6 {"temp":67, "date":8494}
-7 {"temp":72, "date":8569}
-8 {"temp":73, "date":8642}
-9 {"temp":70, "date":8732}
-10 {"temp":57, "date":8799}
-11 {"temp":63, "date":8862}
-12 {"temp":70, "date":9008}
-13 {"temp":78, "date":9044}
-14 {"temp":67, "date":9078}
-15 {"temp":53, "date":9155}
-16 {"temp":67, "date":9233}
-17 {"temp":75, "date":9250}
-18 {"temp":70, "date":9299}
-19 {"temp":81, "date":9341}
-20 {"temp":76, "date":9370}
-21 {"temp":79, "date":9407}
-22 {"temp":75, "date":9434}
-23 {"temp":76, "date":9461}
-24 {"temp":58, "date":9508}
diff --git a/creg/test_data/shuttle.trainresp b/creg/test_data/shuttle.trainresp
deleted file mode 100644
index 53e58f2c..00000000
--- a/creg/test_data/shuttle.trainresp
+++ /dev/null
@@ -1,23 +0,0 @@
-1 0
-2 1
-3 0
-5 0
-6 1
-7 0
-8 0
-9 0
-10 1
-11 2
-12 2
-13 0
-14 0
-15 2
-16 2
-17 2
-18 2
-19 1
-20 1
-21 0
-22 2
-23 1
-24 2