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https://github.com/moses-smt/mosesdecoder.git
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git-svn-id: https://mosesdecoder.svn.sourceforge.net/svnroot/mosesdecoder/trunk@1704 1f5c12ca-751b-0410-a591-d2e778427230
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
#include "Scorer.h"
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void StatisticsBasedScorer::score(const candidates_t& candidates, const diffs_t& diffs,
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scores_t& scores) {
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if (!_scoreData) {
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throw runtime_error("Score data not loaded");
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}
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//calculate the score for the candidates
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if (_scoreData->size() == 0) {
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throw runtime_error("Score data is empty");
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}
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if (candidates.size() == 0) {
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throw runtime_error("No candidates supplied");
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}
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int numCounts = _scoreData->get(0,candidates[0]).size();
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vector<int> totals(numCounts);
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for (size_t i = 0; i < candidates.size(); ++i) {
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ScoreStats stats = _scoreData->get(i,candidates[i]);
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if (stats.size() != totals.size()) {
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stringstream msg;
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msg << "Statistics for (" << "," << candidates[i] << ") have incorrect "
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<< "number of fields. Found: " << stats.size() << " Expected: "
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<< totals.size();
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throw runtime_error(msg.str());
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}
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for (size_t k = 0; k < totals.size(); ++k) {
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totals[k] += stats.get(k);
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}
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}
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scores.push_back(calculateScore(totals));
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candidates_t last_candidates(candidates);
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//apply each of the diffs, and get new scores
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for (size_t i = 0; i < diffs.size(); ++i) {
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for (size_t j = 0; j < diffs[i].size(); ++j) {
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size_t sid = diffs[i][j].first;
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size_t nid = diffs[i][j].second;
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size_t last_nid = last_candidates[sid];
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for (size_t k = 0; k < totals.size(); ++k) {
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int diff = _scoreData->get(sid,nid).get(k)
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- _scoreData->get(sid,last_nid).get(k);
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totals[k] += diff;
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}
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last_candidates[sid] = nid;
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}
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scores.push_back(calculateScore(totals));
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}
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}
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