What is Latent Semantic Indexing or LSI ?
Latent Semantic Indexing or LSI has changed the world of search engine optimization. One fine morning, SEO experts found that most of their best ranking sites on Google were in jeopardy. Google has simply updated its crawler-program to accommodate LSI and has moved towards a more relevant rating list!
LSI is a methodology involving statistical probability and correlation that helps deducing the semantic distance between words. It’s obviously a complex methodology but can be easily applied to understand the relation between certain words in a paragraph or in a document. This methodology is being used while indexing a page in the search engine’s database.