next up previous
次へ: Irreducible Minimum Vector 上へ: Semantic-Vector Space Model 戻る: (1) Possibility of Reducing

(2) Possibility of Improving Recall Factor

In conventional W-VSM, a word never contributes to performance if it is not used as the vector element, even if it appears in the documents. Words that are literally different are treated as words with different meanings.

On the other hand, in S-VSM, 400 thousand words contribute to the performance of information retrieval through 2,710 Semantic Attributes. The meanings of most of the words used in documents, regardless of whether they are synonyms or not, reflect specific vectors and the recall performance is expected to improve compared to conventional methods.




Jin'ichi Murakami 平成13年10月5日