From 8aa29810bb77611cc20b7a384897ff6703783ea1 Mon Sep 17 00:00:00 2001
From: Chris Dyer <cdyer@allegro.clab.cs.cmu.edu>
Date: Sun, 18 Nov 2012 13:35:42 -0500
Subject: major restructure of the training code

---
 dtrain/kbestget.h | 152 ------------------------------------------------------
 1 file changed, 152 deletions(-)
 delete mode 100644 dtrain/kbestget.h

(limited to 'dtrain/kbestget.h')

diff --git a/dtrain/kbestget.h b/dtrain/kbestget.h
deleted file mode 100644
index dd8882e1..00000000
--- a/dtrain/kbestget.h
+++ /dev/null
@@ -1,152 +0,0 @@
-#ifndef _DTRAIN_KBESTGET_H_
-#define _DTRAIN_KBESTGET_H_
-
-#include "kbest.h" // cdec
-#include "sentence_metadata.h"
-
-#include "verbose.h"
-#include "viterbi.h"
-#include "ff_register.h"
-#include "decoder.h"
-#include "weights.h"
-#include "logval.h"
-
-using namespace std;
-
-namespace dtrain
-{
-
-
-typedef double score_t;
-
-struct ScoredHyp
-{
-  vector<WordID> w;
-  SparseVector<double> f;
-  score_t model;
-  score_t score;
-  unsigned rank;
-};
-
-struct LocalScorer
-{
-  unsigned N_;
-  vector<score_t> w_;
-
-  virtual score_t
-  Score(vector<WordID>& hyp, vector<WordID>& ref, const unsigned rank, const unsigned src_len)=0;
-
-  void Reset() {} // only for approx bleu
-
-  inline void
-  Init(unsigned N, vector<score_t> weights)
-  {
-    assert(N > 0);
-    N_ = N;
-    if (weights.empty()) for (unsigned i = 0; i < N_; i++) w_.push_back(1./N_);
-    else w_ = weights;
-  }
-
-  inline score_t
-  brevity_penalty(const unsigned hyp_len, const unsigned ref_len)
-  {
-    if (hyp_len > ref_len) return 1;
-    return exp(1 - (score_t)ref_len/hyp_len);
-  }
-};
-
-struct HypSampler : public DecoderObserver
-{
-  LocalScorer* scorer_;
-  vector<WordID>* ref_;
-  unsigned f_count_, sz_;
-  virtual vector<ScoredHyp>* GetSamples()=0;
-  inline void SetScorer(LocalScorer* scorer) { scorer_ = scorer; }
-  inline void SetRef(vector<WordID>& ref) { ref_ = &ref; }
-  inline unsigned get_f_count() { return f_count_; }
-  inline unsigned get_sz() { return sz_; }
-};
-////////////////////////////////////////////////////////////////////////////////
-
-
-
-
-struct KBestGetter : public HypSampler
-{
-  const unsigned k_;
-  const string filter_type_;
-  vector<ScoredHyp> s_;
-  unsigned src_len_;
-
-  KBestGetter(const unsigned k, const string filter_type) :
-    k_(k), filter_type_(filter_type) {}
-
-  virtual void
-  NotifyTranslationForest(const SentenceMetadata& smeta, Hypergraph* hg)
-  {
-    src_len_ = smeta.GetSourceLength();
-    KBestScored(*hg);
-  }
-
-  vector<ScoredHyp>* GetSamples() { return &s_; }
-
-  void
-  KBestScored(const Hypergraph& forest)
-  {
-    if (filter_type_ == "uniq") {
-      KBestUnique(forest);
-    } else if (filter_type_ == "not") {
-      KBestNoFilter(forest);
-    }
-  }
-
-  void
-  KBestUnique(const Hypergraph& forest)
-  {
-    s_.clear(); sz_ = f_count_ = 0;
-    KBest::KBestDerivations<vector<WordID>, ESentenceTraversal,
-      KBest::FilterUnique, prob_t, EdgeProb> kbest(forest, k_);
-    for (unsigned i = 0; i < k_; ++i) {
-      const KBest::KBestDerivations<vector<WordID>, ESentenceTraversal, KBest::FilterUnique,
-              prob_t, EdgeProb>::Derivation* d =
-            kbest.LazyKthBest(forest.nodes_.size() - 1, i);
-      if (!d) break;
-      ScoredHyp h;
-      h.w = d->yield;
-      h.f = d->feature_values;
-      h.model = log(d->score);
-      h.rank = i;
-      h.score = scorer_->Score(h.w, *ref_, i, src_len_);
-      s_.push_back(h);
-      sz_++;
-      f_count_ += h.f.size();
-    }
-  }
-
-  void
-  KBestNoFilter(const Hypergraph& forest)
-  {
-    s_.clear(); sz_ = f_count_ = 0;
-    KBest::KBestDerivations<vector<WordID>, ESentenceTraversal> kbest(forest, k_);
-    for (unsigned i = 0; i < k_; ++i) {
-      const KBest::KBestDerivations<vector<WordID>, ESentenceTraversal>::Derivation* d =
-            kbest.LazyKthBest(forest.nodes_.size() - 1, i);
-      if (!d) break;
-      ScoredHyp h;
-      h.w = d->yield;
-      h.f = d->feature_values;
-      h.model = log(d->score);
-      h.rank = i;
-      h.score = scorer_->Score(h.w, *ref_, i, src_len_);
-      s_.push_back(h);
-      sz_++;
-      f_count_ += h.f.size();
-    }
-  }
-};
-
-
-} // namespace
-
-#endif
-
-- 
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