Latent Semantic Indexing
Latent Semantic Indexing is an indexing method that uses Singular Value Decomposition. What this means is that the most common words and the contents of a webpage are identified as keywords in the search engine. The word ‘latent’ means something that is not visible. The word ‘semantic’ refers to the meaning of the word or a language. And the word ‘indexing’ refers to the identification of the meaning of the document which is suitable for the search engine. It searches for the synonyms of the title for example, if the title is “laptop”, the search engine would find words relating to this subject, i.e. “computers”, “Hp”, “Acer”, “laptop repairs”. If the title was “Cosmetic Surgery”, it would find words like “augmentation"and “Liposuction surgery“.
Many sites have been delisted by Google as being of little use to the visitor as the change of keyword was frequent. Thus many internet marketers saw their income heading towards zero overnight, and this change can be traced back to time that Latent Semantic Indexing was introduced. Even the words which are bolded or italicized are given more importance.
When a search keyword is entered, the websites that the search engines pull up are the most visited sites and account for the most of the sales online. When Google introduced Adsense it became more evident to entrepreneurs that lot of money could be made by creating web pages especially designed to display Adsense ads. Now things have changed.
If you have used a good keyword technique or even if you have included a few secondary keywords, the rest of the content should have synonyms littered throughout it to convince the search engines. When a search is done of the Latent Semantic Database similar values that it has worked out for every word is looked for by the search engine, it then comes up with the related documents that are appropriate for the query. LSI doesn’t need a perfect match, it always returns in related documents. Latent Semantic Indexing is good in keeping content relevant to the topic and also helps website owners produce quality materials.