A Search Engine Explained
A search engine is a device that delivers contents to you as per your query from the World Wide Web. Search engine locates the suitable content from the plethora of information available on WWW in form of links, images and web pages. These engines are based on complex algorithms and sometimes even on human editing.
A search engine uses web crawling, indexing and searching in that order to provide the most accurate results related to a particular search. Search engines work by storing information about millions of web pages that can be retrieved at the request of its user. The web crawler, or "spider," is used as an automated web browser. It follows every appropriate visible link. The web crawler analyzes the contents of each link to determine how the pages should be indexed.
Mata tags and even words from the webpage are studied to classify the webpage and its content. All these data are stored for future usage.
Companies such as Google store all or part of the source web page, while AltaVista stores every page word for word. The information stored and indexed is known as the cache, it allows for instant updating and keeps the searching filtered with ease. An important factor for a successful search engine is its ability to provide active and useable information with minimal to no linkrot. The cache also saves an archive of a removed source that can later be access by the user after the site is updated.
Search engines will examine keywords entered by the user and obtain a list of organized search results. Summaries may also accompany web links on the results page.
The goal of major search engines is to supply the most relevant results. Not all sites with the requested keywords are relevant to the search. The search engines have used their spiders and indexing to filter out useless information. They generate their own system for analyzing a website for content.
Page rank is latest addition in the techniques used by search engines to sort out various web pages and their contents. Page rank decides the relevance of a particular page by studying the correlation between its meta tags, descriptions, keywords used and the content of that webpage. The search engines rank those sites high that have association with high ranked web pages. The page rank is essential for any web page or site as it determines its probability of featuring at the top of any particular search.
A search engine uses web crawling, indexing and searching in that order to provide the most accurate results related to a particular search. Search engines work by storing information about millions of web pages that can be retrieved at the request of its user. The web crawler, or "spider," is used as an automated web browser. It follows every appropriate visible link. The web crawler analyzes the contents of each link to determine how the pages should be indexed.
Mata tags and even words from the webpage are studied to classify the webpage and its content. All these data are stored for future usage.
Companies such as Google store all or part of the source web page, while AltaVista stores every page word for word. The information stored and indexed is known as the cache, it allows for instant updating and keeps the searching filtered with ease. An important factor for a successful search engine is its ability to provide active and useable information with minimal to no linkrot. The cache also saves an archive of a removed source that can later be access by the user after the site is updated.
Search engines will examine keywords entered by the user and obtain a list of organized search results. Summaries may also accompany web links on the results page.
The goal of major search engines is to supply the most relevant results. Not all sites with the requested keywords are relevant to the search. The search engines have used their spiders and indexing to filter out useless information. They generate their own system for analyzing a website for content.
Page rank is latest addition in the techniques used by search engines to sort out various web pages and their contents. Page rank decides the relevance of a particular page by studying the correlation between its meta tags, descriptions, keywords used and the content of that webpage. The search engines rank those sites high that have association with high ranked web pages. The page rank is essential for any web page or site as it determines its probability of featuring at the top of any particular search.
About the Author:
Justin Harrison is an internationally recognised Internet Marketing expert who provides world class SEO Services to website owners. For more information visit: http://www.seorankings.co.za
Postingan
Posting Komentar