Buchcover von Web Harvesting
Buchtitel:

Web Harvesting

Web Crawler, Office Of Scientific And Technical Information, E-Mail Address Harvesting

Plor (14.01.2012 )

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ISBN-13:

978-613-9-00001-2

ISBN-10:
6139000017
EAN:
9786139000012
Buchsprache:
Englisch
Klappentext:
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Web harvesting is commonly used to describe Web scraping from a multitude of sites. It also refers to an implementation of a Web crawler that uses human expertise or machine guidance to direct the crawler to URLs which compose a specialized collection or set of knowledge. Web harvesting can be thought of as focused or directed Web crawling.Web harvesting allows Web-based search and retrieval applications, commonly referred to as search engines, to index content that is pertinent to the audience for which the harvest is intended. Such content is thus virtually integrated and made searchable as a separate Web application. General purpose search engines, such as Google and Yahoo! index all possible links they encounter from the origin of their crawl. In contrast, search engines based on Web harvesting only index URLs to which they are directed. This implementation strategy has the effect of creating a searchable application that is faster, due to the reduced size of the index; and one that provides higher quality and more selective results since the indexed URLs are pre-filtered for the topic or domain of interest. In effect, harvesting makes otherwise isolated islands of information
Verlag:
Plor
Webseite:
http://www.betascript-publishing.com
Herausgegeben von:
Lennox Raphael Eyvindr
Seitenanzahl:
88
Veröffentlicht am:
14.01.2012
Lagerbestand:
Lieferbar
Kategorie:
Sozialwissenschaften allgemein
Preis:
34,00 €
Stichworte:
web, harvesting, Urls, Crawler, Purpose, Index, Information

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