Document (#35905)

Author

Castillo, C.
Baeza-Yates, R.

Title

Web retrieval and mining

Source

Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates

Imprint

London : Taylor & Francis

Year

2009

Pages

S.xx-xx

Abstract

The advent of the Web in the mid-1990s followed by its fast adoption in a relatively short time, posed significant challenges to classical information retrieval methods developed in the 1970s and the 1980s. The major challenges include that the Web is massive, dynamic, and distributed. The two main types of tasks that are carried on the Web are searching and mining. Searching is locating information given an information need, and mining is extracting information and/or knowledge from a corpus. The metrics for success when carrying these tasks on the Web include precision, recall (completeness), freshness, and efficiency.

Footnote

Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.

Theme

Suchmaschinen

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