82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
#include "concordia/tm_matches.hpp"
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#include <boost/foreach.hpp>
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#include <math.h>
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TmMatches::TmMatches(const SUFFIX_MARKER_TYPE exampleId,
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const unsigned char exampleSize,
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const unsigned char patternSize):
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_exampleId(exampleId),
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_exampleSize(exampleSize),
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_patternSize(patternSize) {
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}
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TmMatches::~TmMatches() {
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}
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void TmMatches::calculateScore() {
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double exampleOverlay = _getLogarithmicOverlay(_exampleMatchedRegions,
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_exampleSize, 1.0);
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double patternOverlay = _getLogarithmicOverlay(_patternMatchedRegions,
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_patternSize, 2.0);
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_score = (exampleOverlay + patternOverlay) / 2.0;
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}
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void TmMatches::calculateSimpleScore() {
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unsigned char exampleMatchedLength = 0;
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BOOST_FOREACH(Interval & interval, _exampleMatchedRegions) {
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exampleMatchedLength += interval.getLength();
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}
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unsigned char patternMatchedLength = 0;
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BOOST_FOREACH(Interval & interval, _patternMatchedRegions) {
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patternMatchedLength += interval.getLength();
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}
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_score = (double) (exampleMatchedLength + patternMatchedLength)
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/ (double) (_exampleSize + _patternSize);
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}
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void TmMatches::addExampleInterval(int start, int end) {
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if (!_alreadyIntersects(_exampleMatchedRegions, start, end)) {
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_exampleMatchedRegions.push_back(new Interval(start, end));
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}
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}
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void TmMatches::addPatternInterval(int start, int end) {
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if (!_alreadyIntersects(_patternMatchedRegions, start, end)) {
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_patternMatchedRegions.push_back(new Interval(start, end));
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}
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}
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bool TmMatches::_alreadyIntersects(
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boost::ptr_vector<Interval> intervalList,
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int start, int end) {
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Interval * tempInterval = new Interval(start, end);
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BOOST_FOREACH(Interval & oldInterval, intervalList) {
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if (oldInterval.intersects(*tempInterval)) {
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delete tempInterval;
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return true;
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}
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}
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delete tempInterval;
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return false;
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}
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double TmMatches::_getLogarithmicOverlay(boost::ptr_vector<Interval> intervalList,
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unsigned char sentenceSize,
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double k) {
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double overlayScore = 0;
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BOOST_FOREACH(Interval & interval, intervalList) {
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double intervalOverlay = (double) interval.getLength() / (double) sentenceSize;
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double significanceFactor = pow(log(interval.getLength()+1) / log(sentenceSize+1), 1/k);
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overlayScore += intervalOverlay * significanceFactor;
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}
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return overlayScore;
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}
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