How the GOOGLE actually works:
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seminar class
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Joined: Feb 2011
28-02-2011, 04:38 PM

presented by:
Abhijeet Mishra

.doc   Abstract.doc (Size: 34 KB / Downloads: 151)
Topic: “How does the Google actually work”.
My seminar and presentation is based on the basic methodology of a search engine. Here we will study it with the help of “GOOGLE”. The pre-requisite credentials for knowing the working of a search engine are a brief knowledge of Data Centers and Data Crawling (or Web Crawling).
Data Centers:
Basically, a data center is used to house computer systems and other components, such as storage systems and telecommunications. It generally includes redundant or backup power supplies, redundant data communications connections, environmental controls (e.g., air conditioning, fire suppression) and security devices. IT operations are a crucial aspect of most organizational operations..
Data Crawling on the Web:
A Web crawler (or a Data Crawler) is a computer program that browses the World Wide Web in a methodical, automated manner or in an orderly fashion. Other terms for Web crawlers are ants, automatic indexers, bots, or Web spiders, Web robots, or Web cutters. The behavior of a Web crawler is the outcome of a combination of policies:
 a selection policy that states which pages to download,
 a re-visit policy that states when to check for changes to the pages,
 a politeness policy that states how to avoid overloading Web sites, and
 a parallelization policy that states how to coordinate distributed Web crawlers.
How the GOOGLE actually works:
Google is considered one of the most powerful Search Engine in the potentially useful market. Whatever we search on Google gives us a meaningful result for any permutation and combination of the input query. Google runs on a distributed network of thousands of low-cost computers and can therefore carry out fast parallel processing., significantly speeding up data processing. Google has three distinct parts:
 Googlebot, a web crawler that finds and fetches web pages.
 The indexer that sorts every word on every page and stores the resulting index of words in a huge database.
 The query processor, which compares your search query to the index and recommends the documents that it considers most relevant.
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20-04-2011, 12:25 AM

i need ppt of ho google works

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