// try two different method, inner dot or cos
private static double GetCwobScore(DoubleVec vec1, DoubleVec vec2)
{
//double score = DoubleVecUtil.GetInnerDot(vec1, vec2);
// normailzed score between -1.0 to 1.0
double score = DoubleVecUtil.GetCosineSimilarity(vec1, vec2);
return(score);
}
// private method
private static double GetSimilarityScore(DoubleVec vec1, DoubleVec vec2)
{
double score = DoubleVecUtil.GetCosineSimilarity(vec1, vec2);
// set the min. to 0.0
score = (score <= 0.0 ? 0.0d : score);
return(score);
}
// use cosineSimilarity instead of inner dot
private static double GetInnerDotScore(DoubleVec vec1, DoubleVec vec2)
{
double score = DoubleVecUtil.GetInnerDot(vec1, vec2);
// set the min. to 0.0
// it seems -score is useful for split ....
//score = (score <= 0.0?0.0d:score);
return(score);
}