Abstract LSI (Latent semantic Indexing) brings the traditional information retrieval into the semantic retrieval, which improves the performance of information retrieval system effectively.

• 摘要潜在语义标引（LSI）的提出，使信息检索由传统的基于关键词的检索开始进入基于概念的语义检索阶段，有效提高了信息检索系统的性能。