tf-idf weighting
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tf-idf weighting
tf(term frequency)
a document or zone that mentions a query term more often has more to do with that query and therefore should receive a higher score
query term
: a set of words
idf(inverse document frequency)
从公式可以看出:
-
- 反之
tf-idf weighting
参考:
tf
idf
tf-idf
0 0
- tf-idf weighting
- Tf–idf term weighting
- TF/IDF
- TF-IDF
- TF-IDF
- TF-IDF
- TF-IDF
- TF-IDF
- TF-IDF
- TF-IDF
- TF-IDF
- TF-IDF
- TF-IDF
- TF-IDF
- tf-idf
- tf-idf
- TF-IDF
- tf-idf
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