| 2012 |
Wotzlaw, Andreas; Speckenmeyer, Ewald; Porschen, Stefan
Probabilistic Analysis of Random Mixed Horn Formulas
Zentrum für Angewandte Informatik Köln (zaik2012-678)
|
Ullrich, Oliver; Lückerath, Daniel; Speckenmeyer, Ewald
Simulation and optimization of Cologne's tram schedule
In: Liu-Henke, X., Buchta, R., Quantmeyer, F. (Ed.): Proceedings of ASIM-Workshop STS/GMMS 2012. ARGESIM/ASIM Pub. TU Vienna/Austria, Wolfenbüttel, Feb. 23-24, 2012, 279-289.
|
Kuckertz, Patrick; Ullrich, Oliver; Randerath, Bert
A simulation based approach on robust airline job pairing
In: Liu-Henke, X., Buchta, R., Quantmeyer, F. (Ed.): Proceedings of ASIM-Workshop STS/GMMS 2012. ARGESIM/ASIM Pub. TU Vienna/Austria, Wolfenbüttel, Feb. 23-24, 2012, 291-299.
|
| 2011 |
Franz, Sebastian
Entwurf und Entwicklung eines mehrstufigen Optimierungsverfahrens für Stadtbahnfahrpläne unter Berücksichtigung verkehrsplanerischen Vorgaben
Diplomarbeit, Univ. Köln, 2011
|
Porschen, Stefan; Schmidt, Tatjana; Speckenmeyer, Ewald; Wotzlaw, Andreas
XSAT and NAE-SAT of linear CNF classes
This article was written in 2011 and is to appear in "Discrete Applied Mathematics"
|
Wotzlaw, Andreas; Speckenmeyer, Ewald; Porschen, Stefan
Generalized k-ary tanglegrams on level graphs: a satisfiability-based approach and its evaluation
This article was written in 2011 and is to appear in "Discrete Applied Mathematics"
|
Petzold, Martin; Ullrich, Oliver; Speckenmeyer, Ewald
Dynamic Distributed Simulation of DEVS Models on the OSGi Service Platform
Bödi, R.; Maurer, W. (Ed): Proceedings of ASIM 2011, Winterthur (2011)
|
Kuckertz, Patrick; Ullrich, Oliver; Linstädter, Anja; Speckenmeyer, Ewald
Agent based modeling and simulation of a pastoral-nomadic land use system
Bödi, R.; Maurer, W. (Ed): Proceedings of ASIM 2011, Winterthur (2011)
|
Lückerath, Daniel; Ullrich, Oliver; Speckenmeyer, Ewald
Modeling time table based tram traffic
Bödi, R.; Maurer, W. (Ed): Proceedings of ASIM 2011, Winterthur (2011)
|
Werth, Felix; Ullrich, Oliver; Speckenmeyer, Ewald
Reducing blocking effects in multi-block layouts
Bödi, R.; Maurer, W. (Ed): Proceedings of ASIM 2011, Winterthur (2011)
|
Lückerath, Daniel
Entwurf und Entwicklung einer Anwendung zur parallelen Simulation von schienengebundenem Öffentlichen Personennahverkehr
Diplomarbeit, Univ. Köln, 2011
|
Speckenmeyer, Ewald; Wotzlaw, Andreas; Porschen, Stefan
A Satisfiability-based Approach for Embedding Generalized Tanglegrams on Level Graphs
Lecture Notes in Computer Science, Vol. 6695, 134-144 (2011)
|
Werth, Felix; Ullrich, Oliver
Simulation ausgewählter Heuristiken zur Tourenplanung in manuellen Kommissionierstationen
ASIM-Treffen 2011 - Simulation technischer Systeme und Grundlagen und Methoden in Modellbildung und Simulation, Hrsg: Andreas Brenke, Shaker Verlag, 2011, 161-166
|
Lang, Martin
Entwicklung einer Modellierungssprache und eines Solvers für kombinatorische Optimierungsprobleme
Diplomarbeit, Univ. Köln, 2011
|
| 2010 |
Trajt, Valerij
Entwicklung eines Datenkompressionsprogramms und Vergleich verschiedener Kompressionsmethoden
Diplomarbeit, Univ. Köln, 2010
|
Li, N.
Designing and Analyzing Simulated Annealing Based Metro Schedules
Diplomarbeit, Univ. Köln, 2010
|
Werth, F.; Beckers, M.; Ullrich, O.; Speckenmeyer, E.
Simulation zur Verbesserung der Logistikprozesse eines Pharmagroßhandels
Integrationsaspekte der Simulation - Technik, Organisation und Personal, Hrsg: Gert Zülch, Patricia Stock, KIT Scientific Publishing, 2010, 261-268
|
Speckenmeyer, E., Porschen, S.
PARTIAL MAX-SAT of Level Graph (Mixed-Horn)Formulas
Studies in Logic 3, 24-43 (2010)
|
Kuckertz, P.
Entwurf und Entwicklung einer Anwendung zur Simulation des Weidemanagements des Volks der Himba in Namibia
Diplomarbeit, Univ. Köln, 2010
|
Beckers, M.
Entwurf und Entwicklung einer Anwendung zur Simulation des Pharmagroßhandels GEHE GmbH in Troisdorf
Diplomarbeit, Univ. Köln, 2010
|
Speckenmeyer, E., Porschen, S.
MAX-SAT of level graph formulas
Proc. Guangzhou Symposium on SAT in Logic-Based Modeling, Sun Yat-sen University, Guangzhou, China, 2010, to appear
|
Porschen, S., Schmidt, T., Speckenmeyer, E.
Complexity Results for Linear XSAT Problems
Lecture Notes in Computer Science, Vol. 6175, 251-263 (2010)
|
Werth, F., Beckers, M., Ullrich, O.
Modellierung und Simulation eines Pharmagroßhandels
ASIM-Treffen 2010 - Simulation technischer Systeme und Grundlagen und Methoden in Modellbildung und Simulation. Hrsg.: Walter Commerell, ASIM/Hochschule Ulm, 2010, 141-146
|
Porschen, S., Plagge, G.
Minimizing variable-weighted X3SAT
Proc. ICCS 2010, pp. 449-454, Hong Kong (2010)
|
Lemaić, M., Speckenmeyer, E.
Markov-Chain-Based Heuristics for the Minimum Feedback Vertex Set Problem
Zentrum für Angewandte Informatik Köln (zaik2010-596)
|
Walter, D.
Optimierung von ÖPNV-Fahrplänen unter Berücksichtigung verkehrsplanerischer Vorgaben
Diplomarbeit, Univ. Köln, 2010
|
| 2009 |
Porschen, S.
On rectangular covering problems
Int. Journal Comp. Geometry & Appl. 19, 325-340 (2009)
|
Porschen, S., Schmidt, T., Speckenmeyer, E.
On Some Aspects of Mixed-Horn formulas
Lecture Notes in Computer Science, Vol. 5584, 86-100 (2009)
|
Porschen S., Speckenmeyer, E., Zhao, X.
Linear CNF formulas and satisfiability
Discr. Appl. Math. 157, 1046-1068 (2009)
|
Porschen, S., Schmidt, T.
On Some SAT-variants over Linear Formulas
Lecture Notes in Computer Science, Vol. 5404, 449-460 (2009)
|
Porschen, S.
An FPT-variant of the Shadow Problem with kernelization
Proc. ICCS 2009, pp. 432-439, Hong Kong (2009)
|
| 2008 |
Speckenmeyer, E., Li, C.M., Manquinho, V., Tacchella, A. (Editors)
Special Issue on the 2007 Competitions
Journal on Satisfiability, Boolean Modeling and Computation, Volume 4 (2008)
|
Porschen, S., Speckenmeyer, E.
A CNF Class Generalizing Exact Linear Formulas
Lecture Notes in Computer Science, Vol. 4996, 231-245 (2008)
|
Ullrich, O., Speckenmeyer, E.
Parallelisierung der Simulation von ÖPNV-Netzen
5. ASIM-Treffen Grundlagen und Methoden von Modellierung und Simulation, 18.-20. Februar 2008
|
Niepel, S.
Ganztagesfahrplanoptimierung im ÖPNV mit naturanalogen Methoden
Diplomarbeit, Univ. Köln, 2008
|
Plagge, G., Porschen, S.
Über Variablen-Gewichtete X3SAT-Probleme
54. Workshop über Algorithmen und Komplexität, Universität Hannover, 5. März 2008
|
| 2007 |
Schön, A.
Optimierung von Stadtbahnfahrplänen - Ein Genetischer Algorithmus sowie Simulation der Optimalfahrpläne unter Einbeziehung des n
Diplomarbeit, Univ. Köln, 2007
|
Porschen, S.
A CNF Formula Hierarchy over the Hypercube
Lecture Notes in Computer Science (LNAI), Vol. 4830, 234-243 (2007)
|
Porschen, S.
On variable-weighted exact satisfiability problems
Ann. Math. Artif. Intell., Vol. 51, 27 - 54 (2007)
|
Porschen, S.
Optimal Parameterized Rectangular Coverings
Lecture Notes in Computer Science, Vol. 4705, 96-109 (2007)
|
Porschen, S., Speckenmeyer, E.
Clause set structures and satisfiability
Techn. Report zaik2007-532, Univ. Köln, 2007
|
Ullrich, O.
Mehr Pünktlichkeit im ÖPNV: Optimierung und Simulation des Kölner Stadtbahn-Fahrplans
Vortragsreihe Wissenschaft im Rathaus, 25. April 2007
|
Porschen, S.
On generalizations of the shadow independent set problem
Discrete Math., Vol. 37, 1473 - 1485 (2007)
|
Porschen, S., Speckenmeyer, E.
Satisfiability of mixed Horn formulas
Discrete Appl. Math., Vol. 155, 1408 - 1419 (2007)
|
Porschen, S., Speckenmeyer, E.
Algorithms for Variable-Weighted 2-SAT and Dual Problems
Lecture Notes in Computer Science, Vol. 4501, 173-186 (2007)
|
Porschen, S.
Structural and computational aspects of restricted Boolean formulas
Habilitationsschrift, Univ. Köln, 2007
|
| 2006 |
Porschen, S.
Algorithms for Rectangular Covering Problems
Lecture Notes in Computer Science, Vol. 3980, 40-49 (2006)
|
Porschen, S.
Counting All Solutions of Minimum Weight Exact Satisfiability
Lecture Notes in Computer Science, Vol. 3998, 50-59 (2006)
|
Ullrich, O.
CATSview - Eine Benutzerschnittstelle zur Steuerung, Visualisierung und Ergebnisauswertung von Fahrplansimulationen im
Diplomarbeit, Univ. Köln, 2006
|
Porschen, S., Speckenmeyer, E., Randerath, B.
On Linear CNF Formulas
Lecture Notes in Computer Science, Vol. 4121, 212 - 225 (2006)
|
Plagge, G.
Über Variablen-Gewichtete X3SAT Optimierungsprobleme
Diplomarbeit, Univ. Köln, 2006
|
Porschen, S, Speckenmeyer, E.
Linear CNF formulas and satisfiability
Techn. Report zaik2006-520, Univ. Köln, 2006
|
Porschen, S.
On variable-weighted exact satisfiability problems
Techn. Report zaik2006-526, Univ. Köln, 2006
|
Lückemeyer, G., Speckenmeyer, E.
Comparing Applicability of Two Simulation Models, in Public Transport Simulation
Proc. 19. Symposium Simulationstechnik, Hannover, SCS Publishing House, San Diego, pp. 9-14, 2006
|
Porschen, S., Speckenmeyer, E.
NP-completeness for Restricted Linear Formula Classes
Proc. Guangzhou Symposium on Satisfiability in Logical-Based Modeling Tech. Report Sun Yat-sen University, pp. 111-123, Guangzhou, China, 2006
|
| 2005 |
Porschen, S.
Counting All Solutions of Minimum Weight Exact Satisfiability
Technical Report: zaik2005-500, Universität zu Köln (2005)
|
Porschen, S.
A New Parameterization of the Shadow Problem
Technical Report: zaik2005-501, Universität zu Köln (2005)
|
Achter, V.
Radial Level Planarity in a Propositional Logic Framework
2005, Universität zu Köln, Diplomarbeit (2005)
|
Porschen, S.
Solving Minimum Weight Exact Satisfiability in Time O(2^0.2441n)
Lecture Notes in Computer Science, Vol. 3827, 654-664 (2005)
|
Lückemeyer, G.
A Traffic Simulation System Increasing the Efficiency of Schedule Design for Public Transport Systems Based on Scarce Data
2005, Universität zu Köln, Doktorarbeit (2005)
|
Porschen, S., Speckenmeyer, E.
Satisfiability of Mixed Horn Formulas
Technical Report: zaik2005-499, Universität zu Köln (2005)
|
Porschen, S., Speckenmeyer, E.
Worst Case Bounds for Some NP-Complete Modified Horn-SAT Problems
Lecture Notes in Computer Science, Vol. 3542, 251-262 (2005)
|
Rühmkorf, J.
Entwicklung eines leistungsfähigen Lösers für Quantifizierte Boolesche Formeln
2005, Universität zu Köln, Diplomarbeit (2005)
|
Porschen, S.
On the Rectangular Subset Closure of Point Sets
Lecture Notes in Computer Science, Vol. 3480, 796-805 (2005)
|
Porschen, S.
On Some Weighted Satisfiability and Graph Problems
Lecture Notes in Computer Science, Vol. 3381, 278-287 (2005)
|
Porschen, S., Randerath, B., Speckenmeyer, E.
Exact Satisfiability is Decidable in Time O(2^0.16254n)
Annals of Mathematics and Artifical Intelligence, Vol. 43(1-4), 173-193 (2005)
|
Randerath, B., Vestergaard, P. D.
Well-Covered Graphs and Factors
accepted for publication in Discrete Applied Mathematics (2005)
|
Randerath, B.
Domination Cookies
Sonderband zum Ersten Aachener Tag der Graphentheorie, Shaker Verlag (2005)
|
| 2004 |
Randerath, B., Schiermeyer, I.
Vertex-Colouring and Forbidden Subgraphs - a Survey
Graphs and Combinatorics, Vol. 20(1), 1-40 (2004)
|
Randerath, B., Schiermeyer, I.
3-Colorability is in P for P6 - Free Graphs
Discrete Applied Mathematics, Vol. 136(2-3) (2004)
|
Randerath, B.
3-Colorability and Forbidden Subgraphs. I: Characterizing Pairs
Discrete Mathematics, Vol. 276(1-3), 313-325 (2004)
|
Porschen, S., Speckenmeyer, E.
Satisfiability Problems for Mixed Horn Formulas
Proceedings of the Guangzhou Symposium on Satisfiability and its Applications, Guangzhou, China, September 2004, 106-113 (2004)
|
Porschen, S.
On the Time Complexity of Rectangular Covering Problems in Discrete Plane
Lecture Notes in Computer Science, Vol. 3045, 137-146 (2004)
|
Randerath, B.
Graph Colouring and Satisfiability Problems for Restricted Classes of Instances
2004, Habilitationsschrift, Universität zu Köln (2004)
|
Holz, P.
Online-Colouring of Claw-Free Graphs by Using the Strategy of First-Fit
2004, Universität zu Köln, Diplomarbeit (2004)
|
Randerath, B., Schiermeyer, I.
Exact Algorithms for Minimum Dominating Set
Technical Report: zaik2005-501, Universität zu Köln (2005)
|
Kesavan Cheemplavam, P.
Optimierung der LBC auf Switched Ethernet
2004, Universität zu Köln, Diplomarbeit (2004)
|
Porschen, S., Speckenmeyer, E., Randerath, B., Gärtner, M.
Tabusat and WalkSat for Level Graph Formulas
Technical Report: zaik2004-476, Universität zu Köln (2004)
|
Porschen, S., Speckenmeyer, E.
Worst Case Bounds for Some Modified NP-Complete Horn-SAT Problems
accepted for publication in Lecture Notes in Computer Science, Technical Report: zaik2004-473, Universität zu Köln (2004)
|
Speckenmeyer, E.
Robuste Straßenbahnfahrpläne - Reduktion der Verspätungsanfälligkeit
Vortragsreihe Universität im Rathaus, 29. November 2004
|
Porschen, S., Randerath, B., Speckenmeyer, E.
Linear Time Algorithms for Some Not-All-Equal Satisfiability Problems
Lecture Notes in Computer Science, Vol. 2919, 172-187 (2004)
|
| 2003 |
Porschen, S., Randerath, B., Speckenmeyer, E.
Linear time algorithmus for some Not-All-Equal Satisfiability Problems
Accepted for publication in LNAI, Springer-Verlag, short version in: Proc. 6th Int. conf. on Theory and Appl. of Satisfiability-Testing (SAT 2003), 72-80, St. Margaritha Ligure-Portofino (Italy) (2003)
|
Franco, J., Kleine Büning, H., Speckenmeyer, E. (Editors)
Results on Satisfiability in Propositional Logic
Annals of Mathematics and Artificial Intelligence, Volume 37 No. 3, Kluwer Academic Publishing, Dordrecht (2003)
|
Speckenmeyer, E., Franco, J., van Maaren, H. (Editors)
The Renesse Issue on Satisfiability
Discrete Appl. Math., Volume 130, Number 2, Elsevier, Amsterdam (2003)
|
Porschen, S.
On the Rectangular Grid Hull of Point Sets and DAG's in the Plane
Technical Report: zaik2004-463, Universität zu Köln (2003)
|
Heusch, P., Porschen, S., Speckenmeyer, E.
Improving a fixed parameter tractability time bound for the shadow problem
Journal of Computer and System Sciences (JCSS), Volue 67, Issue 4 (2003)
|
Genç, Z.
Ein neuer Ansatz zur Fahrplanoptimierung im ÖPNV: Maximierung von zeitlichen Sicherheitabständen.
2003, Universität zu Köln, Doktorarbeit (2003)
|
Randerath, B., Schiermeyer, I.
Vertex-colouring and forbidden subgraphs - a survey
Technical Report: zaik2003-453, Universität zu Köln (2003)
|
Porschen, S.
A New Duality Principle for Hypergraphs and Propositional Formulas
Technical Report: zaik2004-464, Universität zu Köln (2003)
|
Le, V. B., Randerath, B.
On Stable Cutsets in Line Graphs
Theoret. Comput. Sci., Vol. 301, 463-475 (2003)
|
Kochol, M., Lozin, V., Randerath, B.
The 3-colorability problem on graphs with maximal degree 4
SIAM J. Comp., Vol. 32(5), 1128-1139 (2003)
|
Porschen, S.
Time Complexity of Rectangular Covering Problems in the Discrete Plane
Technical Report: zaik2004-462, Universität zu Köln (2003)
|
| 2002 |
Randerath, B., Schiermeyer, I.
A Note on Brooks' Theorem forTriangle-Free Graphs
Australas. J. Combin., Vol. 26, 3-9 (2002)
|
Randerath, B., Schiermeyer, I.
Chromatic Number of Graphs Each Path of Which is 3-Colourable
Result. Math. 41, 150-155 (2002)
|
Randerath, B., Vestergaard, P. D.
On Well-Covered Graphs of Odd Girth 7or Greater
Discussiones Mathematicae Graph Theory, Vol.22, 159-172 (2002)
|
Randerath, B., Vestergaard, P. D.
Well-Covered Graphs and Factors
Technical Report R-02-2017, Aalborg University (2002)
|
Randerath, B., Schiermeyer, I., Tewes, M.
3-Colourability and Forbidden Subgraphs. II: Polynomial Algorithms
Discrete Math., Vol. 251 (1-3), 137-153 (2002)
|
Randerath, B., Schiermeyer, I., Tewes, M., Volkmann, L.
Vertex-Pancyclic Graphs
Discrete Appl. Math., Vol. 120 (1-3), 219-237 (2002)
|
Porschen, S., Randerath, B., Speckenmeyer, E.
Exact 3-Satisfiability is decidable in time 0(2^0.16254n)
accepted for publication in: Annals of Mathematics and Artificial Intelligence, short version in: Proceedings of the 5th International Symposium on the Theory and Applications of Satisfiability Testing (SAT 2002), 231-235, Cincinnati/Ohio (2002)
|
Schwikowski, B., Speckenmeyer, E.
On Computing all Minimal Solutions for Feedback Problems
Discrete Appl. Math. 117, 253-265 (2002)
|
Porschen, S.
On Generalizations of the Shadow Independent Set Problem
accepted for publication in Discrete Math., Technical Report: zaik2004-461, Universität zu Köln (2002
|
Joisten, M.
Simulation von Fahrplänen für den ÖPNV mittels Zellularautomaten
2002, Universität zu Köln, Diplomarbeit (2002)
|
Mellin, S.
Polynomielle Färbungsalgorithmen für Pk
2002, Universität zu Köln, Diplomarbeit (2002)
|
Meisgen, F., Speckenmeyer, E.
A Dynamic Load Balancing Algorithmus with Adjustable Degree of Imbalance on Heterogeneous Network
6th Workshop on Parallel Systems and Algorithms (PASA 2002), Karlsruhe, VDE, 161-168 (2002)
|
| 2001 |
Harant, J., Jendrol, S., Randerath, B., Ryjacek, Z., Schiermeyer, I., Voigt, M.
On Weights of Induced Paths and Cycles in Claw-Free and K1,r - Free Graphs
J. of Graph Theory, Vol.36 (3), 131-143 (2001)
|
Porschen, S.
Upper Bounds for Rectangular Covering Problems on Integer Lattices
Technical Report: zaik2003-424, Universität zu Köln (2001)
|
Randerath, B., Speckenmeyer, E., Boros, E., Cepek, O., Hammer, P., Kogan, A., Makino, A., Simeone, B.
A Satisfiability Formulation of Problems on Level Graphs
Proceedings of the LICS 2001 Workshop on Theory and Applications of Satisfiability Testing (SAT 2001), Boston/Massachusetts, June 14-15, H. Kautz and B. Selman, editors, Electronic Notes in Discrete Math. 9, 1-9 (2001)
|
Porschen, S.
On Covering Z-Grid Points by Rectangles
Electronic Notes in Discrete Mathematics, Vol. 8 (2001)
|
Genç, Z., Speckenmeyer, E.
Fahrplanoptimierung im ÖPNV
Technical Report: zaik2001-426, Universität zu Köln (2001)
|
| 2000 |
Franco, J., Gallo, G., Kleine Büning, H., Speckenmeyer, E. (Editors)
Topics in Discrete Mathematics 10: The Satisfiability Problem
Elsevier, Amsterdam (2000)
|
Lückemeyer, G.
Datenmodellierung und Datenschnittstellen - Basis einer effizienten Fahrplangestaltung für den ÖPNV
2000, Universität zu Köln, Diplomarbeit (2000)
|
| 1999 |
Franco, J., Goldsmith, J., Schlipf, J., Speckenmeyer, E., Swaminathan, R. P.
An Algorithm for the Class of Pure Implicational Formulas
Discrete Applied Mathematics, Vol. 96-97, 89-106 (1999)
|
Randerath, B., Vestergaard, P.D.
A Note on Well-Covered Graphs with Odd Girth
Tech. Report R-99-2019, 1999, Aalborg University (1999)
|
Randerath, B., Schiermeyer, I., Wang, H.
On Quadrilaterals in a Graph
Discrete Math., Vol. 203, 229-237 (1999)
|
Randerath, B., Volkmann, L.
Characterization of Graphs with Equal Domination and Matching Number
Utilitas Math., Vol. 55, 65-72 (1999)
|
Meisgen, F., Speckenmeyer, E.
Dynamic Load Balancing on Heterogeneous Networks
in: Proceedings of JIM'99, Journée de l'Informatique Messine, Metz France, M. Margenstern and D. Singer, editors, 191-206 (1999)
|
Genc, Z.
Ein Aspekt der Fahrplanoptimierung im ÖPNV: Maximierung minimaler Sicherheitsabstände
1999, Universität zu Köln, Diplomarbeit (1999)
|
| 1998 |
Meisgen, F., Speckenmeyer, E.
The PLB-Library: Dynamic Load Balancing on NOWs
Anwendungsbezogene Lastverteilung ALV'98, SFB-342 TU München, 89-99, 1998, Editors: A. Bode and A. Ganz et al (1998)
|
Randerath, B., Schiermeyer, I.
Colouring Graphs with Prescribed Induced Cycle Lengths
Tech. Report 98.341, 1998, Universität zu Köln (1998)
|
Randerath, B.
The Vizing Bound for the Chromatic Number based on Forbidden Pairs
Shaker Verlag, 1998, RWTH Aachen, Doktorarbeit (1998)
|
Randerath, B., Volkmann, L.
Characterization of Graphs with equal Domination and Covering Number
Discrete Math., Vol. 191, 159-169 (1998)
|
Niessen, T., Randerath, B.
Regular Factors of Simple Regular Graphs, and Factor Spectra
Discrete Math., Vol. 185, 89-103 (1998)
|
Franco, J., Gallo, G., Kleine Büning, H., Speckenmeyer, E.
2nd Workshop on the Satisfiability Problem
Tech. Report tr-ri-98-196, 1998, Universität-GH Paderborn (1998)
|
Meisgen, F.
Dynamische Lastausgleichsverfahren in heterogenen Netzwerken -- Entwurf und Implementierung einer Klassenbibliothek zu
1998, Universität zu Köln, Doktorarbeit (1998)
|
Holland-Moritz, A.
Simulation von Schienenverkehr im ÖPNV
1998, Universität zu Köln, Diplomarbeit (1998)
|
| 1997 |
Seifert, Th.
Routingprobleme und die gruppenspezifische Simulation von Shared Memory auf verteilten Systemen
1997, Universität zu Köln, Doktorarbeit (1997)
|
Schwikowski, B., Speckenmeyer, E.
On Computing all Minimal Solutions for Feedback Problems
Tech. Report 97.287, 1997, Universität zu Köln (1997)
|
Meisgen, F.
Dynamic Load Balancing for Simulations of Biological Aging
International Journal of Modern Physics C, Vol. 8, No. 3, 575-582 (1997)
|
Meisgen, F., Speckenmeyer, E.
Dynamic Load Balancing on Heterogenous Workstation Clusters
Tech. Report 97.261, 1997, Universität zu Köln (1997)
|
Heusch, P., Meisgen, F., Speckenmeyer, E.
CATS-Computer Aided Tram Scheduling
Tech. Report 97.262, 1997, Universität zu Köln (1997)
|
Franco, J., Goldsmith, J., Schlipf, J., Speckenmeyer, E., Swaminathan, R. P.
An Algorithm for the Class of Pure Implicational Formulas
Tech. Report 97.270, 1997, Universität zu Köln, to appear in: Discrete Applied Mathematics (1997)
|
Böhm, M., Speckenmeyer, E.
Precomputation-Based Load Balancing
Proceedings of the 4th PASA Workshop,1996, World Scientific, 177-194, 1997, Editors: F. Hoßfeld and E. Maehle and E. W. Mayer (1997)
|
Randerath, B., Volkmann, L.
Simplicial Graphs and Relationships to Different Graph Invariants
Ars Combin., Vol. 46, 211-217 (1997)
|
| 1996 |
Seifert, Th., Speckenmeyer, E.
Optimal Oblivious Permutation Routing in Small Hypercubes
Parallel-Algorithmen, -Rechnerstrukturen und -Systemsoftware, Proc. 4. PASA Workshop 1996, Jülich, 53-66; also available as: Tech. Report 96.218, 1996, Universität zu Köln (1996)
|
Meisgen, F., Speckenmeyer, E.
Precomputation-based Load Balancing zur Parallelisierung von Best-First Search Algorithmen
Paralleles und Verteiltes Rechnen. Beiträge zum 4. Workshop über Wissenschaftliches Rechnen, Shaker Verlag, 39-48, 1996, Editors: Matthies, H., Schüle, J. (1996)
|
Franco, J., Gallo, G., Kleine Büning, H., Speckenmeyer, E., Spera, C.
Workshop on the Satisfiability Problem
Tech. Report 96.230, Universität zu Köln (1996)
|
Böhm, M.
Verteilte Lösung harter Probleme: Schneller Lastausgleich
1996, Universität zu Köln, Shaker Verlag, Aachen, Doktorarbeit (1996)
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Böhm, M., Speckenmeyer, E.
Precomputation-Based Load Balancing
Tech. Report 96.219, 1996, Universität zu Köln, to appear in Proceedings of the 4th PASA Workshop (1996)
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Böhm, M., Speckenmeyer, E.
A Fast Parallel SAT-Solver -- Efficient Workload Balancing
Annals of Mathematics and Artificial Intelligence, Vol. 17, 381-400 (1996)
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Speckenmeyer, E., Böhm, M., Heusch, P.
On the Imbalance of Distributions of Solutions of CNF-Formulas and its Impact on Satisfiability Solvers
Satisfiability Problem: Theory and Application, DIMACS Series in discrete mathematics and theoretical computer science, Vol. 35, 669-676, 1996, Editors: Du, D., Gu, J., Pardalos, P. M. (1996)
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| 1995 |
Seifert, Th., Speckenmeyer, E.
Simulation of Shared Memory Operations on Distributed Memory Machines
SAMS, Vol. 17, 45-66 (1995)
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Heusch, P.
The Complexity of the Falsifiability Problem for Pure Implicational Formulas
Proc. 20th Conf. Math. Foundations of Computer Science 1995 (MFCS '95), Springer Verlag (LNCS~969), 221-227 (1995)
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| 1994 |
Randerath, B., Volkmann, L.
A Characterization of Well Coverd Block-Cactus Graphs
Australas. J. Combin., Vol. 9, 307-314 (1994)
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Böhm, M., Speckenmeyer, E.
Effiziente Lastausgleichsalgorithmen
Parallele Datenverarbeitung aktuell: TAT'94, IOS Press, 53-60, 1994, Editors: R. Grebe and R. Flieger (1994)
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Böhm, M., Seifert, Th., Speckenmeyer, E.
Workload Balancing on Trees, Grids, Hypercubes and Cliques
1994, University of Düsseldorf, Germany (1994)
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| 1993 |
Heusch, P.
Implikationen der Implikation
1993, Heinrich-Heine-Universität Düsseldorf, Doktorarbeit (1993)
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Böhm, M., Speckenmeyer, E.
A Fast Parallel SAT-Solver -- Efficient Workload Balancing
1993, Heinrich-Heine-Universität Düsseldorf (1993)
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Böhm, M., Speckenmeyer, E.
Ein Paralleler SAT-Solver auf Transputern
Parallele Datenverarbeitung mit dem Transputer, Proc. 4. Transputer-Anwender-Treffen 1992, Aachen, Springer Verlag (Reihe Informatik aktuell), 235-244, 1993, Editors: R. Grebe and C. Ziemann (1993)
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Seifert, Th., Speckenmeyer, E.
A Simple Simulation of Concurrent Write Operations on Distributed Memory Machines
Transputer Applications and Systems '93, Vol. 2, IOS Press, 1076-1082, 1993, Editors: R. Grebe and C. Ziemann (1993)
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Seifert, Th., Speckenmeyer, E.
Simulation von Shared-Memory-Operationen auf verteilten Systemen
8. Symposium zur Simulationstechnik, Band 6, Vieweg, 421-424, 1993, Editor: Achim Sydow (1993)
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Seifert, Th., Speckenmeyer, E.
Zur Simulation von Shared-Memory auf Transputernetzwerken
Parallele Datenverarbeitung mit dem Transputer, Proc. 4. Transputer-Anwender-Treffen 1992, Aachen, Springer (Reihe Informatik aktuell), 51-60, 1993, Editors: R. Grebe and C. Ziemann (1993)
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Seifert, Th.
Das Library-Paket parC
1993, Heinrich-Heine-Universität Düsseldorf (1993)
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Randerath, B.
Well-Coverdness in Simplicial and Block-Cactus Graphs
1993, RWTH Aachen, Diplomarbeit (1993)
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| 1992 |
Heusch, P., Speckenmeyer, E.
Some Aspects of the Probabilistic Behaviour of Variants of Resolution
Proc. Computer Science Logic 1991 (CSL '91), Springer Verlag (LNCS 626), 164-172 (1992)
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Rosenthal, J. W., Speckenmeyer, E., Kemp, R.
Exact-Satisfiability, a Natural Extension of Set Partitioning
Annals of Mathematics and Artificial Intelligence, Vol. 6, 185-200 (1992)
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Seifert, Th.
Syntax und Semantik der parallelen Programmiersprache PRAM
1992, Heinrich-Heine-Universität Düsseldorf (1992)
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| 1991 |
Seifert, Th., Speckenmeyer, E.
Spezifikation einer Sprache zur Simulation von PRAM-Modellen und ihre Übersetzung nach OCCAM (Hauptvortrag)
Parallele Datenverarbeitung mit dem Transputer, Proc. 2. Transputer-Anwender-Treffen 1990, Aachen, Springer (Informatik Fachberichte 272), 103-110, 1991, Editors: R. Grebe and C. Ziemann (1991)
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Böhm, M., Speckenmeyer, E.
Parallele Dynamische Spielbaumauswertung auf Transputern
Parallele Datenverarbeitung mit dem Transputer, Proc. 2. Transputer-Anwender-Treffen 1990, Aachen, Springer Verlag (Informatik Fachberichte 272), 80-87, 1991, Editors: R. Grebe and C. Ziemann (1991)
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| 1990 |
Böhm, M., Speckenmeyer, E.
A Dynamic Processor Tree for Solving Game Trees in Parallel
Methods of Operations Research, Vol. 63, 479-489 (1990)
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Speckenmeyer, E., Kemp, R.
On the Average Time Behavior of Set Partioning
Proc. Computer Science Logic 1989 (CSL '89), Springer Verlag (LNCS 440), 369-381 (1990)
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Seifert, Th.
Spezifikation einer Sprache zur Simulation von PRAM-Modellen und ihre Übersetzung nach OCCAM
1990, Universität Dortmund, Diplomarbeit (1990)
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Speckenmeyer, E., Siemon, H.-P.
Parallelisierung algorithmischer Paradigmen auf Transputernetzwerken
University of Dortmund, FB Informatik, Abschlußbericht der Projektgruppe PAPT (SS 1989 und WS 1989/90) (1990)
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| 1989 |
Speckenmeyer, E.
Is Average Superlinear Speedup Possible?
Proc. Computer Science Logic 1988 (CSL '88), Springer Verlag (LNCS 385), 301-312 (1989)
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Speckenmeyer, E.
On Feedback Problems in Digraphs
Proceedings of the 15th International Workshop on Graph-Theoretic Concepts in Computer Science WG '89 (Castle Rolduc, The Netherlands, June 1989), Springer-Verlag, LNCS 411, 218-231, 1989, Editor: Nagl, M. (1989)
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| 1988 |
Speckenmeyer, E.
Classes of CNF-Formulas with Backtracking Trees of Exponential or Linear Average Order for Exact Satisfiablity
Proc. 13th Conf. Math. Foundations of Computer Science 1988 (MFCS '88), Springer Verlag (LNCS 324), 529-537 (1988)
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Speckenmeyer, E.
On Feedback Vertex Sets and Nonseparating Independent Sets in Cubic Graphs
J. Graph Theory, Vol. 12, No. 3, 405-412 (1988)
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Speckenmeyer, E.
On the Average Case Behavior of Backtracking for the Satisfiability and Exact Satisfiability Problem
1988, Universität-GH Paderborn, Habilitationsschrift, Reihe Informatik, Bericht Nr. 50 (1988)
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| 1987 |
Speckenmeyer, E.
On the Average Case Complexity of Backtracking for the Exact Satisfiability Problem
Proc. Computer Science Logic 1987 (CSL '87), Springer Verlag (LNCS 329), 281-288, 1987 full version in: Forschungsbericht Nr. 244/1987, Abt. Informatik, Universität Dortmund (1987)
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Speckenmeyer, E., Monien, B., Vornberger, O.
Superlinear Speedup for Parallel Backtracking
Proc. Supercomputing 1987 (ICS '87), Springer Verlag (LNCS 292), 985-993 (1987)
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| 1986 |
Speckenmeyer, E.
Bounds of Feedback Vertex Sets of Undirected Cubic Graphs
Colloquia Mathematica Societatis Janos Bolyai, 42. Algebra, Combinatorics and Logic in Computer Science 1983 in Györ (Hungary), 719-729 (1986)
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| 1985 |
Monien, B., Speckenmeyer, E.
Solving Satisfiability in Less than 2^n
North-Holland Publishing Company, Discrete Appl. Math., Vol. 10, No. 3, 287-295 (1985)
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Monien, B., Speckenmeyer, E.
Ramsey Numbers and an Approximation Algorithm for the Vertex Cover Problem
Acta Informatica, Vol. 22, No. 1, 115-123 (1985)
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| 1984 |
Monien, B., Speckenmeyer, E.
Ramsey Numbers and an Approximation Algorithm for the Vertex Cover Problem
Proc. Int. Frege Conf. 1984, Akademie-Verlag, 345-353 (1984)
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| 1983 |
Speckenmeyer, E.
Untersuchungen zum Feedback Vertex Set Problem in ungerichteten Graphen
1983, Universität-GH Paderborn, Reihe Informatik, Bericht Nr. 16, Doktorarbeit (1983)
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Monien, B., Speckenmeyer, E.
Some Further Approximation Algorithms for the Vertex Cover Problem
Proc. 8th Coll. on Trees in Algebra and Programming (CAAP '83),Springer Verlag (LNCS 159), 341-349, 1983, Editors: G. Goos and J. Hartmanis (1983)
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| 1982 |
Monien, B., Speckenmeyer, E., Vornberger, O.
Upper Bounds for Covering Problems
Methods of Operations Research, Vol. 43, 341-349 (1982)
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| 1980 |
Monien, B., Speckenmeyer, E., Vornberger, O.
Upper Bounds for Covering Problems (full version)
1980, Universität-GH Paderborn, Reihe Informatik, Bericht Nr. 7 (1980)
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| 1979 |
Monien, B., Speckenmeyer, E.
3-Satisfiability is Testable in O(1,62^r)
1979, Universität-GH Paderborn, Reihe Informatik, Bericht Nr. 3 (1979)
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