This book constitutes the refereed proceedings of the 18th International Symposium on Algorithms and Computation, ISAAC 2007, held in Sendai, Japan, in December 2007.
The 77 revised full papers presented together with 2 invited talks were carefully reviewed and selected from 220 submissions. The papers are organized in topical sections on graph algorithms, computational geometry, complexity, graph drawing, distributed algorithms, optimization, data structure, game theory, database applications, online algorithms, I/O algorithms, networks, geometric applications, and string.
Lecture Notes in Computer Science Commenced Publication in 1973 Founding and Former Series Editors: Gerhard Goos, Juris Hartmanis, and Jan van Leeuwen
Editorial Board David Hutchison Lancaster University, UK Takeo Kanade Carnegie Mellon University, Pittsburgh, PA, USA Josef Kittler University of Surrey, Guildford, UK Jon M. Kleinberg Cornell University, Ithaca, NY, USA Friedemann Mattern ETH Zurich, Switzerland John C. Mitchell Stanford University, CA, USA Moni Naor Weizmann Institute of Science, Rehovot, Israel Oscar Nierstrasz University of Bern, Switzerland C. Pandu Rangan Indian Institute of Technology, Madras, India Bernhard Steffen University of Dortmund, Germany Madhu Sudan Massachusetts Institute of Technology, MA, USA Demetri Terzopoulos University of California, Los Angeles, CA, USA Doug Tygar University of California, Berkeley, CA, USA Moshe Y. Vardi Rice University, Houston, TX, USA Gerhard Weikum Max-Planck Institute of Computer Science, Saarbruecken, Germany
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Takeshi Tokuyama (Ed.)
Algorithms and Computation 18th International Symposium, ISAAC 2007 Sendai, Japan, December 17-19, 2007 Proceedings
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Volume Editor Takeshi Tokuyama Tohoku University Graduate School of Information Sciences Sendai, 980-8579, Japan E-mail:
[email protected]
Library of Congress Control Number: 2007940402 CR Subject Classification (1998): F.2, C.2, G.2-3, I.3.5, C.2.4, E.5 LNCS Sublibrary: SL 1 – Theoretical Computer Science and General Issues ISSN ISBN-10 ISBN-13
0302-9743 3-540-77118-2 Springer Berlin Heidelberg New York 978-3-540-77118-0 Springer Berlin Heidelberg New York
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Preface
ISAAC 2007, the 18th International Symposium on Algorithms and Computation took place in Sendai, Japan, December 17-19, 2007. In the past, it was held in Tokyo (1990), Taipei (1991), Nagoya (1992), Hong Kong (1993), Beijing (1994), Cairns (1995), Osaka (1996), Singapore (1997), Daejeon (1998), Chennai (1999), Taipei (2000), Christchurch (2001), Vancouver (2002), Kyoto (2003), Hong Kong (2004), Hainan (2005), and Kolkata(2006). The symposium provided a forum for researchers working in algorithms and the theory of computation from all over the world. In response to our c