What is Latent Semantic Analysis (LSI Indexing)?

Hi All the forum members! I am here to share a question and hope you all guys are gonna help me! My question is What is Latent Semantic Analysis (LSI Indexing)? Thanks in Advance

in natural language, it is universal that one word has many different meanings. and this arises some problems, for example, search algorithm based on accurate matching will give results which are not what users want.

LSI doesn't take the natural language understanding into consideration, but by using statistics with a large number of samples, finds the relevancy between different words/phrases, and make the search results closer to what users are looking for and this also can ensure the efficiency of search.

LSI is an algorithm used by Google to determine how words are related to each other in the context of a web page...

provides the frequency with which each term occurs in each document out of a collection of documents. Chatmine uses this technique to map your consumer perceptual and decision space.