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| Tweet Topic Started: Jul 21 2015, 04:37 AM (4 Views) | |
| Qutrase12 | Jul 21 2015, 04:37 AM Post #1 |
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Internet search engines, such as Google and A9, maintain a very large database of Web pages and available files. To do this, they devise a program called a web crawler, or spider. This software automatically and continuously surfs and hunts content in the Web. Pages that the spider finds are retrieved and indexed according to text content, giving more weight to titles and paragraph headers. Spiders never stop navigating the web from page to page, to index the relevant content of the Internet. Besides looking at the text of titles and headers, some programs are able to identify default tags and keep a library of these page keywords or key phrases in the index. When a user connects to the Internet types a query, which is automatically interpreted as keywords, the My Webpagesearch engine scans the saved index and creates a list of web pages that is most appropriate to what the user is searching for. |
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8:33 AM Jul 11