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Latent Semantic Indexing

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You may have heard or read about Latent Semantic Indexing. Most of its descriptions associate LSI to website marketing. Some web marketers see LSI as a way to improve website’s ranking on the search engines and increase online profits through AdSense.

Latent Semantic Indexing is thought to be a solution to avoid spamming the algorithm. To further understand if LSI will really have positive results in your website, let us look into its definition and see how it works.

LSI – The Definition


LSI stands for Latent Semantic Indexing. Semantics refers to the study of language including the meaning of characters, character strings and words. Semantics include the contextual meaning of words. This means that words may have different meanings depending on the way they are used and the whole meaning of the context where it belongs.

Semantics was used in text processing. The product program performs by matching keywords in texts and the advertisements. When Google introduced AdSense, it used semantics on the algorithm. Advertisers and web marketers believe that the algorithm uses semantics to analyze the meaning of the texts within the web page in relation to the ads. The algorithm matches the keywords of the texts with the keywords of the advertisements.

LSI Issues


Because of the semantics Algorithm, websites started generating pages that contains repeated keywords and phrases. Since Google has launched Adsense, webmasters started manipulating pages to rank high on keywords and phrases. The purpose is to rank high on keywords and have matching ads displayed on the site. There is money in AdSense, therefore, many became interested.

Because of this keywords and web pages’ manipulation, Google has added the Latent Semantic Indexing on its algorithm. LSI is said to analyze the semantic content of websites and its true value to online users searching for particular keywords or phrases.

How LSI Works


Latent Semantic Indexing analyzes the value of web pages by looking for semantically similar words and phrases as the keywords used. With the use of LSI, spamming is quite minimized since the pages are evaluated. LSI roots out contextually similar content. If the pages are analyzed to be of little importance to the keywords used, they are either delisted or dropped down on the Google index for the keywords used.

Basically, this is how Latent Semantic Indexing works. Today it is always associated with search engine optimisation which arises many issues. So far, LSI helps Google lower down the number of spamming in AdSense.

Latent Semantic Indexing minimizes spamming in Google AdSense. Need more AdWords tips and techniques? Please see our AdWords Resources. If you need our expert’s services, please see our AdWords Services. Contact our AdWords Experts for more information.

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