Search Engine Strategies How it works

" The spider's snapshot of your webpage stored with a keyword footprint map and

" The strategy or algorithm by which the information is indexed.

Perhaps an over simplification or description of this function is like a Search Engine could just store the keyword and the URL where it was found.

In the early days of Search Engine Strategies their technology couldn't do any better with the keyword relevance issue and, this would make for an easily manipulated search engine and one which developers struggled to remedy,

Keyword relevancy of the search engine returns were easily manipulated by keyword stuffing among other early tricks that not only do not work any longer but will get you some serious penalties if you try to use them.

Keyword relevance issue in the search engine results serious since there was no easy way of telling how the word was used, whether it was used in an important or a trivial way on the page, whether the word was used once or many times or whether the page contained links to other pages containing the word. In other words, there would be no way of building the ranking list that tries to present the most useful pages at the top of the list of search results.

In order to provide more useful search returns, Search Engines store more than just the keyword and URL. A Search Engine usually applies something called keyword density to a page thus it might store the number of times that the word appears on a page. The search engine also will assign a weight to each entry called keyword prominence, which means the keywords that appear at the top of the page in the first hundred or so will have a value assigned to them somewhat greater than those farther down the page or even at the bottom.

Increasing values are also assigned to words as they appear near the top of the document, in sub-headings, in links, in the META tags or in the title of the page.

Each commercial Search Engine has a different algorithm for assigning relevance and importance to the keywords density, prominence and relevancy its index. This is one of the reasons that a search for the same word on different Search Engines will produce different lists, with the pages presented in different orders.

keyword ratio, An index has a single purpose: it allows information to be found as quickly as possible. There are quite a few ways for an index to be built, but one of the most effective ways is to build a hash table. In hashing, a formula is applied to attach a numerical value to each word.