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Information Retrieval using Web

Anu Kundu, Sona Malhotra

Information retrieval is one of the most crucial components in search engines and their optimization would have a great effect on improving the searching efficiency due to dynamic nature of web it becomes harder to find relevant and recent information. That’s why more and more people begin to use focused crawler to get information in their special fields today. In this paper we discuss concepts of information retrieval system, related problems and several issues