Token-Templates and Logic Programs for Intelligent Web Search

Author: Thomas B.

Source: Journal of Intelligent Information Systems, Volume 14, Numbers 2-3, 6 March 2000 , pp. 241-261(21)

Publisher: Springer

Abstract:

We present a general framework for the information extraction from web pages based on a special wrapper language, called token-templates. By using token-templates in conjunction with logic programs we are able to reason about web page contents, search and collect facts and derive new facts from various web pages. We give a formal definition for the semantics of logic programs extended by token-templates and define a general answer-complete calculus for these extended programs. These methods and techniques are used to build intelligent mediators and web information systems.

Keywords: information extraction; template based wrappers; mediators; logic programming; theory reasoning; deductive web databases; softbots; logic robots

Language: English

Document Type: Regular paper

Affiliations: 1: Universität Koblenz, Institut für Informatik, Rheinau 1, D-56075 Koblenz, Germany. bthomas@uni-koblenz.de

Publication date: 2000-03-06

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