STACS 99 - 16th Annual Symposium on Theoretical Aspects of Computer Science, Trier, Germany, March 4-6, 1999. Proceedings

The Symposium on Theoretical Aspects of Computer Science (STACS) is held annually, alternating between France and Germany. The current volume cons- tutes the proceedings of the 16th STACS conference, organized jointly by the Special Interest Group for Theoretical Computer Science of the Gesellschaft fur Informatik (GI) in Germany, and Maison de l Informatique et des Math e- tiques Discr etes (MIMD) in France. The conference took place in Trier { the oldest town in Germany, with more than 2 millennia of history. Previous symposia of the series were held in Paris (1984), Saarbru cken (1985), Orsay (1986), Passau (1987), Bordeaux (1988), Paderborn (1989), Rouen (1990), Hamburg (1991), Cachan (1992), Wur zburg (1993), Caen (1994), Mu nchen (1995), Grenoble (1996), Lu beck (1997), and Paris (1998). All proceedings of the series have been published in the Lecture Notes of Computer Science series of Springer-Verlag. STACShasbecome oneofthe mostimportantannualmeetingsin Europefor the theoretical computer science community. This time, altogether 300 authors from36countriesonv econtinentssubmittedtheirpapers.Eachsubmissionwas sent to v e members of the program committee for review. During the program committee session 51 out of the 146 submissions were accepted for presen- tion. In two of the selected papers the same result was proved independently.

List of contents

Invited Talks.- Algorithms for Selfish Agents.- The Reduced Genus of a Multigraph.- Classifying Discrete Temporal Properties.- Complexity 1.- Circuit Complexity of Testing Square-Free Numbers.- Relating Branching Program Size and Formula Size over the Full Binary Basis.- Theory of Parallel Algorithms 1.- Memory Organization Schemes for Large Shared Data: A Randomized Solution for Distributed Memory Machines.- The Average Time Complexity to Compute Prefix Functions in Processor Networks.- Complexity 2.- On the Hardness of Permanent.- One-Sided Versus Two-Sided Error in Probabilistic Computation.- Computational Geometry.- An Optimal Competitive Strategy for Walking in Streets.- An Optimal Strategy for Searching in Unknown Streets.- Parallel Searching on m Rays.- Complexity 3.- A Logical Characterisation of Linear Time on Nondeterministic Turing Machines.- Descriptive Complexity of Computable Sequences.- Complexity of Some Problems in Universal Algebra.- Algorithms and Data Structures 1.- New Branchwidth Territories.- Balanced Randomized Tree Splitting with Applications to Evolutionary Tree Constructions.- Treewidth and Minimum Fill-In of Weakly Triangulated Graphs.- Automata and Formal Languages.- Decidability and Undecidability of Marked PCP.- On Quadratic Word Equations.- Some Undecidability Results Related to the Star Problem in Trace Monoids.- Algorithms and Data Structures 2.- An Approximation Algorithm for Max p-Section.- Approximating Bandwidth by Mixing Layouts of Interval Graphs.- Linear Time 1/2-Approximation Algorithm for Maximum Weighted Matching in General Graphs.- Complexity 4.- Extending Downward Collapse from 1-versus-2 Queries to j-versus-j + 1 Queries.- Sparse Sets, Approximable Sets, and Parallel Queries to NP.- Algorithms and Data Structures 3.- External Selection.- Fast Computations of the Exponential Function.- Verification.- A Model of Behaviour Abstraction for Communicating Processes.- Model Checking Lossy Vector Addition Systems.- Algorithms and Data Structures 4.- Constructing Light Spanning Trees with Small Routing Cost.- Finding Paths with the Right Cost.- Complexity 5.- In How Many Steps the k Peg Version of the Towers of Hanoi Game Can Be Solved?.- Lower Bounds for Dynamic Algebraic Problems.- An Explicit Lower Bound for TSP with Distances One and Two.- Theory of Parallel Algorithms 2.- Scheduling Dynamic Graphs.- Supporting Increment and Decrement Operations in Balancing Networks.- Worst-Case Equilibria.- Algorithmic Learning.- A Complete and Tight Average-Case Analysis of Learning Monomials.- Costs of General Purpose Learning.- Universal Distributions and Time-Bounded Kolmogorov Complexity.- Logic in Computer Science.- The Descriptive Complexity Approach to LOGCFL.- The Weakness of Self-Complementation.- On the Difference of Horn Theories.- Complexity 6.- On Quantum Algorithms for Noncommutative Hidden Subgroups.- On the Size of Randomized OBDDs and Read-Once Branching Programs for k-Stable Functions.- How To Forget a Secret.- Logic in Computer Science 2.- A Modal Fixpoint Logic with Chop.- Completeness of Neighbourhood Logic.- Eliminating Recursion in the ?-Calculus.- Complexity 7.- On Optimal Algorithms and Optimal Proof Systems.- Space Bounds for Resolution.- Algorithms and Data Structures 5.- Upper Bounds for Vertex Cover Further Improved.- Online Matching for Scheduling Problems.

About the author

Dr. sc. nat. Christoph Meinel (1954) ist Direktor und Geschäftsführer des Hasso-Plattner-Instituts für Softwaresystemtechnik GmbH (HPI) und ordentlicher Professor (C4) für Internet-Technologien und Systeme. Er hat Mathematik und Informatik an der Humboldt-Universität in Berlin studiert, dort 1981 promoviert und sich 1988 an der Akademie der Wissenschaften in Berlin habilitiert. Er wurde 1992 zum ordentlichen Professor (C4) für Informatik an die Univ. Trier berufen und hat dort in den Jahren 1998-2002 neben seinem Lehrstuhl das von der Fraunhofer-Gesellschaft betreute Institut für Telematik e.V. geleitet. Seit 2004 ist er Direktor und Geschäftsführer des HPIs und hat einen Lehrstuhl (C4) für Internet-Technologien und Systeme an der Universität Potsdam. Neben seiner Lehrtätigkeit in Potsdam ist er Gastprofessor an der Univ. Luxembourg (Luxembourg) und an der TU Peking (China) und als Programmdirektor des HPI-Stanford Forschungsprogramms zum Design Thinking Research tätig. Christoph Meinel ist Autor bzw. Co-Autor und Inhaber internationaler Patente. Seine aktuellen Forschungsinteressen liegen in den Bereichen IT-Sicherheit, Teleteaching, Semantic/Social Web und e-Health. Er war wissenschaftlich aktiv auch auf dem Gebiet der Komplexitätstheorie und hat (BDD-basierte) Datenstrukturen und effiziente Algorithmen untersucht und entworfen. Er ist Chairman des 2007 gegründeten deutschen IPv6-Rats, Herausgeber von ECCC - Electronic Colloquiums on Computational Complexity, des IT-Gipfelblog und des tele-TASK-Archivs. 1996-2007 gehörte er dem Direktorium des IBFI Schloss Dagstuhl an und war Sprecher der GI-Fachgruppe 'Komplexität'. Er hat in einer großen Zahl internationaler Programm-Komitees mitgewirkt, diverse Konferenzen und Symposien veranstaltet und ist in wissenschaftlichen Aufsichtsräten aktiv.

Product details

• Assisted by: Christop Meinel (Editor), Christoph Meinel (Editor), TISON (Editor), Tison (Editor), Sophie Tison (Editor)
• Publisher: Springer, Berlin
• Languages: English
• Product format: Paperback / Softback
• Released: 01.01.1960
• EAN: 9783540656913
• ISBN: 978-3-540-65691-3
• No. of pages: 590
• Weight: 838 g
• Illustrations: XIV, 590 p.
• Series: Lecture Notes in Computer Science; Lecture Notes in Computer Science
• Subject: Natural sciences, medicine, IT, technology > IT, data processing > IT