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Online timestamped text indexing
Authors:Amihood Amir  Gad M. Landau  Esko Ukkonen
Affiliation:a Department of Mathematics and Computer Science, Bar-Ilan University, 52900 Ramat-Gan, Israel
b Department of Computer Science, Haifa University, Haifa 31905, Israel
c Department of Computer and Information Science, Polytechnic University, Six MetroTech Center, Brooklyn, NY 11201-3840, USA
d Department of Computer Science, P.O. Box 26, FIN-00014 University of Helsinki, Finland
Abstract:In this paper we present an efficient method to index a text stream on-line in a fashion that allows, at any point in time, to find the longest suffix of the text that has appeared previously, and the closest (farthest) times in which it has appeared. Our algorithms allow efficient answers to these queries.
Keywords:Analysis of algorithms   Suffix trees   Pattern recognition
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