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authorAvneesh Saluja <asaluja@gmail.com>2013-03-28 18:28:16 -0700
committerAvneesh Saluja <asaluja@gmail.com>2013-03-28 18:28:16 -0700
commit3d8d656fa7911524e0e6885647173474524e0784 (patch)
tree81b1ee2fcb67980376d03f0aa48e42e53abff222 /dtrain/pairsampling.h
parentbe7f57fdd484e063775d7abf083b9fa4c403b610 (diff)
parent96fedabebafe7a38a6d5928be8fff767e411d705 (diff)
fixed conflicts
Diffstat (limited to 'dtrain/pairsampling.h')
-rw-r--r--dtrain/pairsampling.h149
1 files changed, 0 insertions, 149 deletions
diff --git a/dtrain/pairsampling.h b/dtrain/pairsampling.h
deleted file mode 100644
index 84be1efb..00000000
--- a/dtrain/pairsampling.h
+++ /dev/null
@@ -1,149 +0,0 @@
-#ifndef _DTRAIN_PAIRSAMPLING_H_
-#define _DTRAIN_PAIRSAMPLING_H_
-
-namespace dtrain
-{
-
-
-bool
-accept_pair(score_t a, score_t b, score_t threshold)
-{
- if (fabs(a - b) < threshold) return false;
- return true;
-}
-
-bool
-cmp_hyp_by_score_d(ScoredHyp a, ScoredHyp b)
-{
- return a.score > b.score;
-}
-
-inline void
-all_pairs(vector<ScoredHyp>* s, vector<pair<ScoredHyp,ScoredHyp> >& training, score_t threshold, unsigned max, float _unused=1)
-{
- sort(s->begin(), s->end(), cmp_hyp_by_score_d);
- unsigned sz = s->size();
- bool b = false;
- unsigned count = 0;
- for (unsigned i = 0; i < sz-1; i++) {
- for (unsigned j = i+1; j < sz; j++) {
- if (threshold > 0) {
- if (accept_pair((*s)[i].score, (*s)[j].score, threshold))
- training.push_back(make_pair((*s)[i], (*s)[j]));
- } else {
- if ((*s)[i].score != (*s)[j].score)
- training.push_back(make_pair((*s)[i], (*s)[j]));
- }
- if (++count == max) {
- b = true;
- break;
- }
- }
- if (b) break;
- }
-}
-
-/*
- * multipartite ranking
- * sort (descending) by bleu
- * compare top X to middle Y and low X
- * cmp middle Y to low X
- */
-
-inline void
-partXYX(vector<ScoredHyp>* s, vector<pair<ScoredHyp,ScoredHyp> >& training, score_t threshold, unsigned max, float hi_lo)
-{
- unsigned sz = s->size();
- if (sz < 2) return;
- sort(s->begin(), s->end(), cmp_hyp_by_score_d);
- unsigned sep = round(sz*hi_lo);
- unsigned sep_hi = sep;
- if (sz > 4) while (sep_hi < sz && (*s)[sep_hi-1].score == (*s)[sep_hi].score) ++sep_hi;
- else sep_hi = 1;
- bool b = false;
- unsigned count = 0;
- for (unsigned i = 0; i < sep_hi; i++) {
- for (unsigned j = sep_hi; j < sz; j++) {
-#ifdef DTRAIN_FASTER_PERCEPTRON
- if ((*s)[i].model <= (*s)[j].model) {
-#endif
- if (threshold > 0) {
- if (accept_pair((*s)[i].score, (*s)[j].score, threshold))
- training.push_back(make_pair((*s)[i], (*s)[j]));
- } else {
- if ((*s)[i].score != (*s)[j].score)
- training.push_back(make_pair((*s)[i], (*s)[j]));
- }
- if (++count == max) {
- b = true;
- break;
- }
-#ifdef DTRAIN_FASTER_PERCEPTRON
- }
-#endif
- }
- if (b) break;
- }
- unsigned sep_lo = sz-sep;
- while (sep_lo > 0 && (*s)[sep_lo-1].score == (*s)[sep_lo].score) --sep_lo;
- for (unsigned i = sep_hi; i < sz-sep_lo; i++) {
- for (unsigned j = sz-sep_lo; j < sz; j++) {
-#ifdef DTRAIN_FASTER_PERCEPTRON
- if ((*s)[i].model <= (*s)[j].model) {
-#endif
- if (threshold > 0) {
- if (accept_pair((*s)[i].score, (*s)[j].score, threshold))
- training.push_back(make_pair((*s)[i], (*s)[j]));
- } else {
- if ((*s)[i].score != (*s)[j].score)
- training.push_back(make_pair((*s)[i], (*s)[j]));
- }
- if (++count == max) return;
-#ifdef DTRAIN_FASTER_PERCEPTRON
- }
-#endif
- }
- }
-}
-
-/*
- * pair sampling as in
- * 'Tuning as Ranking' (Hopkins & May, 2011)
- * count = 5000
- * threshold = 5% BLEU (0.05 for param 3)
- * cut = top 50
- */
-bool
-_PRO_cmp_pair_by_diff_d(pair<ScoredHyp,ScoredHyp> a, pair<ScoredHyp,ScoredHyp> b)
-{
- return (fabs(a.first.score - a.second.score)) > (fabs(b.first.score - b.second.score));
-}
-inline void
-PROsampling(vector<ScoredHyp>* s, vector<pair<ScoredHyp,ScoredHyp> >& training, score_t threshold, unsigned max, float _unused=1)
-{
- unsigned max_count = 5000, count = 0, sz = s->size();
- bool b = false;
- for (unsigned i = 0; i < sz-1; i++) {
- for (unsigned j = i+1; j < sz; j++) {
- if (accept_pair((*s)[i].score, (*s)[j].score, threshold)) {
- training.push_back(make_pair((*s)[i], (*s)[j]));
- if (++count == max_count) {
- b = true;
- break;
- }
- }
- }
- if (b) break;
- }
- if (training.size() > 50) {
- sort(training.begin(), training.end(), _PRO_cmp_pair_by_diff_d);
- training.erase(training.begin()+50, training.end());
- }
- return;
-}
-
-
-} // namespace
-
-#endif
-