An Introduction to Search Engines and Web Navigation by Mark Levene

By Mark Levene

This ebook is a moment version, up-to-date and extended to explain the applied sciences that aid us locate details at the web.  se's and internet navigation instruments became ubiquitous in our daily use of the net as a data resource, a device for advertisement transactions and a social computing device. in addition, during the cellular internet now we have entry to the web's providers after we are at the move.  This e-book demystifies the instruments that we use while interacting with the net, and provides the reader an in depth evaluation of the place we're and the place we're getting in phrases of seek engine and net navigation applied sciences.

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4 INFORMATION SEEKING ON THE WEB What are the processes we might follow when trying to find information on the Web? The broad term we will use for this type of activity is information seeking. Depending on what information you need, the activity you intend to carry out, and your level of sophistication, there are several different strategies you may follow. 1 Direct Navigation The simplest strategy is direct navigation when the web site address (or URL) is entered directly into the browser. com.

So, our estimate of the number of fish in the lake in this case will be 10,000. Using this method, Lawrence and Giles defined the following experiment with pairs of search engines to estimate the size of the Web. To start with, they tagged all the pages indexed by the first search engine as were the fish. They then chose several typical queries (575 to be precise) and counted the number of unique hits from the first search engine in the pair; that is, they counted the number of web pages returned from the first search engine.

Depending on what information you need, the activity you intend to carry out, and your level of sophistication, there are several different strategies you may follow. 1 Direct Navigation The simplest strategy is direct navigation when the web site address (or URL) is entered directly into the browser. com. Direct navigation is less successful for finding products such as Apple’s MacBook or HP’s iPAQ, since these do not necessarily map directly to the required web addresses. The user can augment the direct navigation strategy with some surfing activity.

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An Introduction to Search Engines and Web Navigation by Mark Levene
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