Description: The analysis of the need to improve the relevance of searching text documents was performed. The problem of improving search was described. Methods of improving the search text documents were analyzed. The analysis criteria most effective methods to improve the relevance of the search text documents was done. Explanation of the meaning of quality of search on the search of text documents was given. Among these methods selected the one that best matches the specified criteria. Description of the advantages of the method of latent-semantic indexing was given.
Keywords: text information search, relevance, relevance criteria