To put a layman, the latent semantic indexing (LSI) is a technique for analyzing and indexing, list or classification of certain keywords or phrases in the content of websites, books or documents to have contextual and conceptual or even the intent and meaning related despite the different words they use.
The techniques used in latent semantic indexing is to find keywords in the text that have a latent in the structure and use. The idea behind the concept of LSI is to collect data that is conceptually similar to the meaning and context to the search query entered by the investigators in the search engines. Search results in May, do not share specific words or phrases made by the researcher.
For example, if you use the word “Saddam Hussein”, the search engines may return the goods to the Gulf War, the situation in Kuwait or Iran, the elite of Iraqi despot, punishes the oil fields of the UN in Iraq, and more, without even mentioning the word “research” Saddam Hussein “.
The LSI technique automates the classification of documents, almost the way humans do. The selected text may not have the same words or phrases. The results returned may have lists, without notes, web content or even e-mails.
Benefits of latent semantic indexing
Sometimes, the web researcher is aware that not using the key words or phrases on the right due to lack of knowledge of appropriate vocabulary. Consequently, use words that approach can not return the desired information, if the search process follows the Boolean model. Latent semantic index technique facilitates the removal of the related conceptual contents, even if the search query does not use the “right” words.
Latent or real information on the
Returns information LSI technique in a conceptual representation, which is not easily reachable through traditional investigative approach. Use synonyms that can perform the underlying concept, even if the researcher uses different words or phrases. The traditional process of extraction do not always find the right content on the same topic using a different vocabulary.
Polysemy
Many words have several meanings. Thus, if a user uses many polysemous words, you can reduce the chances of obtaining accurate information. LSI eliminates unnecessary words of data and tries to penetrate through the senses, which is close to the true meaning of search queries.
Projection of words near and far
LSI examines the content from different web sites or documents and tries to determine which of these contain the semantics of common words, similar words, words, or words more distant. It works almost like a human being. Although LSI does not understand the meaning of words, the algorithm takes into account the patterns of words and the rates accordingly. This process reveals the astonishing intelligence of LSI technology.
How should we use latent semantic indexing?
Latent semantic indexing is a useful tool for search engine optimization to your website or editorial. You must use keywords and phrases carefully. For example, if you use the keyword phrase ‘to buy Jaguar “you should explain what the word” Jaguar “because, as it is a polysemic word. You can: cat, car or plane. It may also be a brand name for certain health products. Jaguar speak in isolation may confuse the instrument of the LSI. Must therefore clarify what “Jaguar” to. Otherwise, they will face the purpose of launching your website.
Also be careful in the use of synonyms that convey the sense that only want to communicate. Synonyms are very useful in clarifying the meaning of words. But filler words for the site SEO May coherent counter productive and that your site is on the blacklist of spam in May.
What happens if not using latent semantic indexing?
The spiders of search engines or software performs a paradigm shift in site selection for first page ranking. Google and other search engines use LSI to determine the relevance of your keywords and phrases in the context of the thematic content of the site. If you are not using keywords and phrases wisely, may not be able to optimize your site to rank. Do not use synonyms or related terms in May issue of helping the LSI tool to identify the relevance of your site for search queries. If your site is about to barbecue, you must use words like barbecue, patio, sauce, charcoal, recipes, etc. that are related to the primary keyword. If you are not using LSI, your site is doomed to go unnoticed.