From 481a120564fdb73c8c6833e2102acb533683261c Mon Sep 17 00:00:00 2001 From: Chris Dyer Date: Fri, 27 Jan 2012 02:31:00 -0500 Subject: migrate mert to the new scorer interface --- gi/pf/base_measures.cc | 241 ------------------------------------------------- 1 file changed, 241 deletions(-) delete mode 100644 gi/pf/base_measures.cc (limited to 'gi/pf/base_measures.cc') diff --git a/gi/pf/base_measures.cc b/gi/pf/base_measures.cc deleted file mode 100644 index 4b1863fa..00000000 --- a/gi/pf/base_measures.cc +++ /dev/null @@ -1,241 +0,0 @@ -#include "base_measures.h" - -#include - -#include "filelib.h" - -using namespace std; - -TableLookupBase::TableLookupBase(const string& fname) { - cerr << "TableLookupBase reading from " << fname << " ..." << endl; - ReadFile rf(fname); - istream& in = *rf.stream(); - string line; - unsigned lc = 0; - const WordID kDIV = TD::Convert("|||"); - vector tmp; - vector le, lf; - TRule x; - x.lhs_ = -TD::Convert("X"); - bool flag = false; - while(getline(in, line)) { - ++lc; - if (lc % 1000000 == 0) { cerr << " [" << lc << ']' << endl; flag = false; } - else if (lc % 25000 == 0) { cerr << '.' << flush; flag = true; } - tmp.clear(); - TD::ConvertSentence(line, &tmp); - x.f_.clear(); - x.e_.clear(); - size_t pos = 0; - int cc = 0; - while(pos < tmp.size()) { - const WordID cur = tmp[pos++]; - if (cur == kDIV) { - ++cc; - } else if (cc == 0) { - x.f_.push_back(cur); - } else if (cc == 1) { - x.e_.push_back(cur); - } else if (cc == 2) { - table[x].logeq(atof(TD::Convert(cur))); - ++cc; - } else { - if (flag) cerr << endl; - cerr << "Bad format in " << lc << ": " << line << endl; abort(); - } - } - if (cc != 3) { - if (flag) cerr << endl; - cerr << "Bad format in " << lc << ": " << line << endl; abort(); - } - } - if (flag) cerr << endl; - cerr << " read " << lc << " entries\n"; -} - -prob_t PhraseConditionalUninformativeUnigramBase::p0(const vector& vsrc, - const vector& vtrg, - int start_src, int start_trg) const { - const int flen = vsrc.size() - start_src; - const int elen = vtrg.size() - start_trg; - prob_t p; - p.logeq(log_poisson(elen, flen + 0.01)); // elen | flen ~Pois(flen + 0.01) - //p.logeq(log_poisson(elen, 1)); // elen | flen ~Pois(flen + 0.01) - for (int i = 0; i < elen; ++i) - p *= u(vtrg[i + start_trg]); // draw e_i ~Uniform - return p; -} - -prob_t PhraseConditionalUninformativeBase::p0(const vector& vsrc, - const vector& vtrg, - int start_src, int start_trg) const { - const int flen = vsrc.size() - start_src; - const int elen = vtrg.size() - start_trg; - prob_t p; - //p.logeq(log_poisson(elen, flen + 0.01)); // elen | flen ~Pois(flen + 0.01) - p.logeq(log_poisson(elen, 1)); // elen | flen ~Pois(flen + 0.01) - for (int i = 0; i < elen; ++i) - p *= kUNIFORM_TARGET; // draw e_i ~Uniform - return p; -} - -void Model1::LoadModel1(const string& fname) { - cerr << "Loading Model 1 parameters from " << fname << " ..." << endl; - ReadFile rf(fname); - istream& in = *rf.stream(); - string line; - unsigned lc = 0; - while(getline(in, line)) { - ++lc; - int cur = 0; - int start = 0; - while(cur < line.size() && line[cur] != ' ') { ++cur; } - assert(cur != line.size()); - line[cur] = 0; - const WordID src = TD::Convert(&line[0]); - ++cur; - start = cur; - while(cur < line.size() && line[cur] != ' ') { ++cur; } - assert(cur != line.size()); - line[cur] = 0; - WordID trg = TD::Convert(&line[start]); - const double logprob = strtod(&line[cur + 1], NULL); - if (src >= ttable.size()) ttable.resize(src + 1); - ttable[src][trg].logeq(logprob); - } - cerr << " read " << lc << " parameters.\n"; -} - -prob_t PhraseConditionalBase::p0(const vector& vsrc, - const vector& vtrg, - int start_src, int start_trg) const { - const int flen = vsrc.size() - start_src; - const int elen = vtrg.size() - start_trg; - prob_t uniform_src_alignment; uniform_src_alignment.logeq(-log(flen + 1)); - prob_t p; - p.logeq(log_poisson(elen, flen + 0.01)); // elen | flen ~Pois(flen + 0.01) - for (int i = 0; i < elen; ++i) { // for each position i in e-RHS - const WordID trg = vtrg[i + start_trg]; - prob_t tp = prob_t::Zero(); - for (int j = -1; j < flen; ++j) { - const WordID src = j < 0 ? 0 : vsrc[j + start_src]; - tp += kM1MIXTURE * model1(src, trg); - tp += kUNIFORM_MIXTURE * kUNIFORM_TARGET; - } - tp *= uniform_src_alignment; // draw a_i ~uniform - p *= tp; // draw e_i ~Model1(f_a_i) / uniform - } - if (p.is_0()) { - cerr << "Zero! " << vsrc << "\nTRG=" << vtrg << endl; - abort(); - } - return p; -} - -prob_t PhraseJointBase::p0(const vector& vsrc, - const vector& vtrg, - int start_src, int start_trg) const { - const int flen = vsrc.size() - start_src; - const int elen = vtrg.size() - start_trg; - prob_t uniform_src_alignment; uniform_src_alignment.logeq(-log(flen + 1)); - prob_t p; - p.logeq(log_poisson(flen, 1.0)); // flen ~Pois(1) - // elen | flen ~Pois(flen + 0.01) - prob_t ptrglen; ptrglen.logeq(log_poisson(elen, flen + 0.01)); - p *= ptrglen; - p *= kUNIFORM_SOURCE.pow(flen); // each f in F ~Uniform - for (int i = 0; i < elen; ++i) { // for each position i in E - const WordID trg = vtrg[i + start_trg]; - prob_t tp = prob_t::Zero(); - for (int j = -1; j < flen; ++j) { - const WordID src = j < 0 ? 0 : vsrc[j + start_src]; - tp += kM1MIXTURE * model1(src, trg); - tp += kUNIFORM_MIXTURE * kUNIFORM_TARGET; - } - tp *= uniform_src_alignment; // draw a_i ~uniform - p *= tp; // draw e_i ~Model1(f_a_i) / uniform - } - if (p.is_0()) { - cerr << "Zero! " << vsrc << "\nTRG=" << vtrg << endl; - abort(); - } - return p; -} - -prob_t PhraseJointBase_BiDir::p0(const vector& vsrc, - const vector& vtrg, - int start_src, int start_trg) const { - const int flen = vsrc.size() - start_src; - const int elen = vtrg.size() - start_trg; - prob_t uniform_src_alignment; uniform_src_alignment.logeq(-log(flen + 1)); - prob_t uniform_trg_alignment; uniform_trg_alignment.logeq(-log(elen + 1)); - - prob_t p1; - p1.logeq(log_poisson(flen, 1.0)); // flen ~Pois(1) - // elen | flen ~Pois(flen + 0.01) - prob_t ptrglen; ptrglen.logeq(log_poisson(elen, flen + 0.01)); - p1 *= ptrglen; - p1 *= kUNIFORM_SOURCE.pow(flen); // each f in F ~Uniform - for (int i = 0; i < elen; ++i) { // for each position i in E - const WordID trg = vtrg[i + start_trg]; - prob_t tp = prob_t::Zero(); - for (int j = -1; j < flen; ++j) { - const WordID src = j < 0 ? 0 : vsrc[j + start_src]; - tp += kM1MIXTURE * model1(src, trg); - tp += kUNIFORM_MIXTURE * kUNIFORM_TARGET; - } - tp *= uniform_src_alignment; // draw a_i ~uniform - p1 *= tp; // draw e_i ~Model1(f_a_i) / uniform - } - if (p1.is_0()) { - cerr << "Zero! " << vsrc << "\nTRG=" << vtrg << endl; - abort(); - } - - prob_t p2; - p2.logeq(log_poisson(elen, 1.0)); // elen ~Pois(1) - // flen | elen ~Pois(flen + 0.01) - prob_t psrclen; psrclen.logeq(log_poisson(flen, elen + 0.01)); - p2 *= psrclen; - p2 *= kUNIFORM_TARGET.pow(elen); // each f in F ~Uniform - for (int i = 0; i < flen; ++i) { // for each position i in E - const WordID src = vsrc[i + start_src]; - prob_t tp = prob_t::Zero(); - for (int j = -1; j < elen; ++j) { - const WordID trg = j < 0 ? 0 : vtrg[j + start_trg]; - tp += kM1MIXTURE * invmodel1(trg, src); - tp += kUNIFORM_MIXTURE * kUNIFORM_SOURCE; - } - tp *= uniform_trg_alignment; // draw a_i ~uniform - p2 *= tp; // draw e_i ~Model1(f_a_i) / uniform - } - if (p2.is_0()) { - cerr << "Zero! " << vsrc << "\nTRG=" << vtrg << endl; - abort(); - } - - static const prob_t kHALF(0.5); - return (p1 + p2) * kHALF; -} - -JumpBase::JumpBase() : p(200) { - for (unsigned src_len = 1; src_len < 200; ++src_len) { - map& cpd = p[src_len]; - int min_jump = 1 - src_len; - int max_jump = src_len; - prob_t z; - for (int j = min_jump; j <= max_jump; ++j) { - prob_t& cp = cpd[j]; - if (j < 0) - cp.logeq(log_poisson(1.5-j, 1)); - else if (j > 0) - cp.logeq(log_poisson(j, 1)); - cp.poweq(0.2); - z += cp; - } - for (int j = min_jump; j <= max_jump; ++j) { - cpd[j] /= z; - } - } -} - -- cgit v1.2.3