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Keywords: specialized search engine, information retrieval, focused crawling, taxonomy, Web search. As many information professionals know, searching the Internet landscape using the Google search engine will find only 20 of the information available on the Internet. This paper discusses the issues in this area and gives an overview of the techniques for building specialized search engines. Such search engines will have smaller and more manageable indexes and have a powerful domainspecific search interface. These search engines search just for information in a particular topic or category on the Web. A necessary response to these search problems is the creation of specialized search engines. For closer examination, I chose BiggerBoat. Google Scholar searches scholarly articles and books, so basically stuff writing by professionals in specialized fields for other professionals in those fields. I looked at several specialized search engines, attempting to create a cross-section of whats available.

What is more, in many cases users are not able to retrieve the information they desire because of the simple and generic search interface provided by the major search engines. Specialized Search Engines Now, I want to introduce you to some of my friends, err, specialized search engines that I find helpful. The scale of such searching introduces both technical and economic problems. Of course, in some cases, advanced searchers can turn a general search tool into a 'pseudo' specialized tool by limiting to a specific domain, country. Even the largest search engines index only a small proportion of static Web pages and do not search the Web' s backend databases that are estimated to be 500 times larger than the static Web. Remember, some content accessible from specialized engines is also available from general engines like Google or AltaVista or AllTheWeb, but using specialized tools can help limit your search. search For browsers to connect to resources on the Internet, the location of the resources must be specified through addresses called. It is emerging that it is very difficult for the major search engines to provide a comprehensive and up-to-date search service of the Web. A engine is a specialized program that assists you in locating information on the web and the Internet.