[Similarity] BM25, TF/IDF 한 줄 정리.
ITWeb/검색일반 2016. 2. 26. 10:52
TF/IDF: common words can still influence the score!
BM25: limits influence of term frequency
TF/IDF: short fields (title,...) are automatically scored higher
BM25: Scales field length with average
참 간단하죠.
그냥 둘의 가장 큰 차이점이라고 생각 하시면 될 것 같습니다.