From 5a23ee2ae792b629e0f52b9c7fdf293de60a0ca1 Mon Sep 17 00:00:00 2001 From: Patrick Simianer Date: Tue, 5 Nov 2013 16:29:03 +0100 Subject: cleaning up syntax features --- decoder/ff_source_syntax2_p.cc | 166 ----------------------------------------- 1 file changed, 166 deletions(-) delete mode 100644 decoder/ff_source_syntax2_p.cc (limited to 'decoder/ff_source_syntax2_p.cc') diff --git a/decoder/ff_source_syntax2_p.cc b/decoder/ff_source_syntax2_p.cc deleted file mode 100644 index dfa791ea..00000000 --- a/decoder/ff_source_syntax2_p.cc +++ /dev/null @@ -1,166 +0,0 @@ -#include "ff_source_syntax2_p.h" - -#include -#include -#include -#include - -#include "sentence_metadata.h" -#include "array2d.h" -#include "filelib.h" - -using namespace std; - -// implements the source side syntax features described in Blunsom et al. (EMNLP 2008) -// source trees must be represented in Penn Treebank format, e.g. -// (S (NP John) (VP (V left))) - -struct PSourceSyntaxFeatures2Impl { - PSourceSyntaxFeatures2Impl(const string& param) { - if (param.compare("") != 0) { - string triggered_features_fn = param; - ReadFile triggered_features(triggered_features_fn); - string in; - while(getline(*triggered_features, in)) { - feature_filter.insert(FD::Convert(in)); - } - } - /*cerr << "find(\"One\") == " << boolalpha << (table.find("One") != table.end()) << endl; - cerr << "find(\"Three\") == " << boolalpha << (table.find("Three") != table.end()) << endl;*/ - } - - void InitializeGrids(const string& tree, unsigned src_len) { - assert(tree.size() > 0); - //fids_cat.clear(); - fids_ef.clear(); - src_tree.clear(); - //fids_cat.resize(src_len, src_len + 1); - fids_ef.resize(src_len, src_len + 1); - src_tree.resize(src_len, src_len + 1, TD::Convert("XX")); - ParseTreeString(tree, src_len); - } - - void ParseTreeString(const string& tree, unsigned src_len) { - //cerr << "TREE: " << tree << endl; - stack > stk; // first = i, second = category - pair cur_cat; cur_cat.first = -1; - unsigned i = 0; - unsigned p = 0; - while(p < tree.size()) { - const char cur = tree[p]; - if (cur == '(') { - stk.push(cur_cat); - ++p; - unsigned k = p + 1; - while (k < tree.size() && tree[k] != ' ') { ++k; } - cur_cat.first = i; - cur_cat.second = TD::Convert(tree.substr(p, k - p)); - // cerr << "NT: '" << tree.substr(p, k-p) << "' (i=" << i << ")\n"; - p = k + 1; - } else if (cur == ')') { - unsigned k = p; - while (k < tree.size() && tree[k] == ')') { ++k; } - const unsigned num_closes = k - p; - for (unsigned ci = 0; ci < num_closes; ++ci) { - src_tree(cur_cat.first, i) = cur_cat.second; - cur_cat = stk.top(); - stk.pop(); - } - p = k; - while (p < tree.size() && (tree[p] == ' ' || tree[p] == '\t')) { ++p; } - } else if (cur == ' ' || cur == '\t') { - cerr << "Unexpected whitespace in: " << tree << endl; - abort(); - } else { // terminal symbol - unsigned k = p + 1; - do { - while (k < tree.size() && tree[k] != ')' && tree[k] != ' ') { ++k; } - // cerr << "TERM: '" << tree.substr(p, k-p) << "' (i=" << i << ")\n"; - ++i; - assert(i <= src_len); - while (k < tree.size() && tree[k] == ' ') { ++k; } - p = k; - } while (p < tree.size() && tree[p] != ')'); - } - //cerr << "i=" << i << " src_len=" << src_len << endl; - } - //cerr << "i=" << i << " src_len=" << src_len << endl; - assert(i == src_len); // make sure tree specified in src_tree is - // the same length as the source sentence - } - - WordID FireFeatures(const TRule& rule, const int i, const int j, const WordID* ants, SparseVector* feats) { - //cerr << "fire features: " << rule.AsString() << " for " << i << "," << j << endl; - const WordID lhs = src_tree(i,j); - int& fid_ef = fids_ef(i,j)[&rule]; - ostringstream os; - os << "SYN:" << TD::Convert(lhs); - os << ':'; - unsigned ntc = 0; - for (unsigned k = 0; k < rule.f_.size(); ++k) { - int fj = rule.f_[k]; - if (k > 0 && fj <= 0) os << '_'; - if (fj <= 0) { - os << '[' << TD::Convert(ants[ntc++]) << ']'; - } /*else { - os << TD::Convert(fj); - }*/ - } - os << ':'; - for (unsigned k = 0; k < rule.e_.size(); ++k) { - const int ei = rule.e_[k]; - if (k > 0) os << '_'; - if (ei <= 0) - os << '[' << (1-ei) << ']'; - else - os << TD::Convert(ei); - } - fid_ef = FD::Convert(os.str()); - //cerr << "FEATURE: " << os.str() << endl; - //cerr << "FID_EF: " << fid_ef << endl; - if (feature_filter.size() > 0) { - if (feature_filter.find(fid_ef) != feature_filter.end()) { - //cerr << "SYN-Feature was trigger more than once on training set." << endl; - feats->set_value(fid_ef, 1.0); - } - //else cerr << "SYN-Feature was triggered less than once on training set." << endli; - } - else { - feats->set_value(fid_ef, 1.0); - } - return lhs; - } - - Array2D src_tree; // src_tree(i,j) NT = type - mutable Array2D > fids_ef; // fires for fully lexicalized - tr1::unordered_set feature_filter; - -}; - -PSourceSyntaxFeatures2::PSourceSyntaxFeatures2(const string& param) : - FeatureFunction(sizeof(WordID)) { - impl = new PSourceSyntaxFeatures2Impl(param); -} - -PSourceSyntaxFeatures2::~PSourceSyntaxFeatures2() { - delete impl; - impl = NULL; -} - -void PSourceSyntaxFeatures2::TraversalFeaturesImpl(const SentenceMetadata& smeta, - const Hypergraph::Edge& edge, - const vector& ant_contexts, - SparseVector* features, - SparseVector* estimated_features, - void* context) const { - WordID ants[8]; - for (unsigned i = 0; i < ant_contexts.size(); ++i) - ants[i] = *static_cast(ant_contexts[i]); - - *static_cast(context) = - impl->FireFeatures(*edge.rule_, edge.i_, edge.j_, ants, features); -} - -void PSourceSyntaxFeatures2::PrepareForInput(const SentenceMetadata& smeta) { - impl->InitializeGrids(smeta.GetSGMLValue("src_tree"), smeta.GetSourceLength()); -} -- cgit v1.2.3