Boost keyword before search with ITIDF

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  • boost the query keyword using IDF
  • TFIDF Formula
  • coord(q,d)*query_boost*query_norm*sum(idf^2 * tf * term_boost * norm(t,d)) [1]
  • add the new keyword value from proMe method
boost keyword in lucene
method Default idf_train idf_train_norm idf_baidu idf_baidu_norm
Accary 0.66228 0.651629 0.57644 0.647869 0.65288
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