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(1)詞語形式檢索時簡單的關鍵字匹配,匹配到了即可得到結果 (2)概念匹配屬於語義檢索的範疇,簡單來說可以理解為同義詞和近義詞匹配,就是輸入檢索詞後,系統會根據檢索詞在知識庫中尋找相似概念,然後再進行檢索.這種管道更優化.
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