Revelancy Algorithm is used by some Search Engines to attempt to pull up search results that apply to the search query. Example: If you search for Cars, the Search Engine attempts to determine revelant information that you might be seeking, such as New cars, Car Dealers, Auto Parts and much more.
The method a search engine or directory uses to match the keywords in a query with the content of each web page, so that the web pages found can be ordered suitably in the query results. Each search engine or directory is likely to use a different algorithm, and to change or improve its algorithm from time to time.
Formula used by search engines to determine page relevance to a query.