What is Latent Semantic Analysis (LSI Indexing)?

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Originally Posted by Armanarora

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

Latent Semantic Indexing (LSI) is an indexing and retrieval method that uses a mathematical technique called Singular Value Decomposition (SVD) to identify patterns in the relationships between the terms and concepts contained in an unstructured collection of text. LSI is based on the principle that words that are used in the same contexts tend to have similar meanings. A key feature of LSI is its ability to extract the conceptual content of a body of text by establishing associations between those terms that occur in similar contexts.

In short, LSA is a mathematical/statistical technique for extracting and representing the similarity of meaning of words and passages by analysis of large bodies of text.

It is just a website development method by keeping seo in mind. Its principle is like home page is supported by two or three pages with supporting keywords and all these pages are linked by other set of pages. Just think how link wheel works in internet ,as like it is link wheel inside a website.

LSA is a technique in natural language processing, of analyzing relationships between a set of documents and the terms they contain by producing a set of concepts related to the documents and term.can use a term-document matrix which describes the occurrences of terms in documents; it is a sparse matrix whose rows correspond to terms and whose columns correspond to documents.