As an SEO I can spend much time trying to work on how Google indexes sites. Unfortunately this is a secret that Google (rightly) keeps close to it’s chest and no SEO can claim to know exactly how it works.
This post explores the LSI technique. Just one of the many Algorithms that we beleive Google has in place.
Latent Semantic Indexing
Ok, I will try not to get too heavy here, but basically LSI is all about processing language. Latent semantic indexing allows a search engine to determine what a page is about outside of specifically matching search query text. It considers the natural flow of the text and the relationship between words on a page. The purpose of LSI is to distinguish between natural text (i.e. text written for the site visitor to read) and keyword-heavy text (text inserted by the SEO to try and improve the ranking of the page).
LSI is designed to set apart text designed to manipulate search results. For example, if you are writing an article on Golf Putting aids it will scan the article and pick up words such as Golfer, Driver, Green, Golf Course, Putting, Golf Club etc
LSI is the reason that SEO’s should write natural copy on their pages, and not cram them with keywords.
