SharpSpider: A Continuous, Parallel and Distributed Spider

Name: SharpSpider: A Continuous, Parallel and Distributed Spider
Brand: VDM Verlag Dr. Müller
SKU: 9783639148862
Price: 58.12 EUR
Availability: InStock

Design and implementation of software to navigate the Web autonomously

Autor: Marco Palomino

Jazyk:

Väzba: Brožovaná

Vydavateľ: VDM Verlag Dr. Müller

Dostupnosť: U vydavateľa na objednávku

Odosielame za 17-27 dní

58.12 €

Search engines have become so indispensable that §they rank second only to e-mail as the most popula...

Informácie o knihe

Autor

Marco Palomino

Jazyk

Angličtina

Väzba

Kniha - Brožovaná

Vydalo

2009

Stránok

160

EAN

9783639148862

Enbook ID

06823440

Vydavateľ

VDM Verlag Dr. Müller

Hmotnosť

255

Rozmery

150 x 220 x 10

Kompletný popis

Search engines have become so indispensable that §they rank second only to e-mail as the most popular §online activity. To respond to queries in a timely §fashion, search engines make use of large indices of §word occurrences on Web pages to cross-reference §websites to keywords. Such indices are maintained by §spiders, a special kind of computer program that §browses the Web autonomously. However, due to a §variety of technological limitations, a single §spider has proven insufficient to maintain a search §engine's index. Hence, in this book, we review §several alternatives to split a spider's work into §multiple processes, and define a methodology to §preserve an up-to-date index of the Web. §SharpSpider, our prototype spider, has been §evaluated using the resources of PlanetLab, a §globally distributed platform for developing and §deploying planetary-scale services. Despite the §utilisation of very modest equipment, we have §performed large crawls of the Web, distributing the §workload amongst various computers spread across §different continents. The statistics derived from §our research offer valuable insight into the nature §of educational Web resources.

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SharpSpider: A Continuous, Parallel and Distributed Spider

Design and implementation of software to navigate the Web autonomously

Informácie o knihe

Kompletný popis

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Zákazníci, ktorí si kúpili túto knihu, kúpili tiež