Filters








13,979 Hits in 6.9 sec

Efficient recognition of finite satisfiability in UML class diagrams: Strengthening by propagation of disjoint constraints

Azzam Maraee, Mira Balaban
2009 2009 International Conference on Model-Based Systems Engineering  
This paper extends and strengthens our previous work on efficient recognition of finite satisfiability problems in UML class diagrams with constrained generalization sets.  ...  The main contribution of the paper is a method for propagation of disjoint constraints within complex class hierarchy structures, which meaningfully extends the scope of the FiniteSat algorithm.  ...  Efficient Decision of Finite Satisfiability in UML Class Diagrams In this section we describe the FiniteSat efficient algorithm for deciding finite satisfiability in UML class diagrams.  ... 
doi:10.1109/mbse.2009.5031714 fatcat:pqabpkjkgzcf5m4cawy3cgvefu

Stochastic Constraint Optimization using Propagation on Ordered Binary Decision Diagrams [article]

Anna L.D. Latour, Behrouz Babaki, Siegfried Nijssen
2018 arXiv   pre-print
Earlier methods used Probabilistic Logic Programming (PLP) techniques to create Ordered Binary Decision Diagrams (OBDDs), which were decomposed into smaller constraints in order to exploit existing constraint  ...  For the specific case of monotonic distributions, we suggest an alternative method for using CP in SCOP, based on the development of a new propagator; we show that this propagator is linear in the size  ...  This research was supported by the Netherlands Organisation for Scientific Research (NWO). Behrouz Babaki is supported by a postdoctoral scholarship from IVADO.  ... 
arXiv:1807.01079v1 fatcat:yhdernn5g5aw7nkiwf6sfjnm2m

Improved Constraint Propagation via Lagrangian Decomposition [chapter]

David Bergman, Andre A. Cire, Willem-Jan van Hoeve
2015 Lecture Notes in Computer Science  
We apply this approach to constraints that can be represented by decision diagrams, and show that propagating Lagrangian cost information can help improve the overall bound computation as well as the solution  ...  Constraint propagation is inherently restricted to the local information that is available to each propagator.  ...  We have shown how this approach can be utilized for stronger cost-based domain filtering, and that it leads to improved bounds for systems of alldiff constraints and set covering problems.  ... 
doi:10.1007/978-3-319-23219-5_3 fatcat:dfdzuvm2mbarjiz2narc77eik4

An Experimental Evaluation of Ground Decision Procedures [chapter]

Leonardo de Moura, Harald Rueß
2004 Lecture Notes in Computer Science  
There is a large variety of algorithms for ground decision procedures, but their differences, in particular in terms of experimental performance, are not well studied.  ...  We develop maps of the behavior of ground decision procedures by comparing the performance of a variety of technologies on benchmark suites with differing characteristics.  ...  Better alternatives are to extend binary decision diagrams to include constraints instead of variables (e.g. difference decision diagrams), or to reduce the propositional constraint problem to a purely  ... 
doi:10.1007/978-3-540-27813-9_13 fatcat:vtodfjv6mrcknhl4vghsmdxvti

A Hybrid BDD and SAT Finite Domain Constraint Solver [chapter]

Peter Hawkins, Peter J. Stuckey
2005 Lecture Notes in Computer Science  
Finite-domain constraint solvers based on Binary Decision Diagrams (BDDs) are a powerful technique for solving constraint problems over finite set and integer variables represented as Boolean formulae.  ...  of a finite-domain constraint problem.  ...  We have previously shown how to represent many finite-domain constraint problems using Binary Decision Diagrams (BDDs) by modeling problems in terms of Boolean variables and representing both variable  ... 
doi:10.1007/11603023_8 fatcat:hyihg3ci4zf35mehqc667ugfsq

Automatic Detection of At-Most-One and Exactly-One Relations for Improved SAT Encodings of Pseudo-Boolean Constraints [chapter]

Carlos Ansótegui, Miquel Bofill, Jordi Coll, Nguyen Dang, Juan Luis Esteban, Ian Miguel, Peter Nightingale, András Z. Salamon, Josep Suy, Mateu Villaret
2019 Lecture Notes in Computer Science  
In this paper we detect AMO and EO relations completely automatically and exploit them to improve SAT encodings that are based on Multi-Valued Decision Diagrams (MDDs).  ...  Pseudo-Boolean (PB) constraints often have a critical role in constraint satisfaction and optimisation problems.  ...  One of the best methods to encode PB constraints to SAT is to use Binary Decision Diagrams (BDDs) [13] .  ... 
doi:10.1007/978-3-030-30048-7_2 fatcat:vxndqomfzrbxxdcasnlql7eqnq

Finite satisfiability of UML class diagrams with constrained class hierarchy

Mira Balaban, Azzam Maraee
2013 ACM Transactions on Software Engineering and Methodology  
Second, a method for propagation of generalization-set constraints in a class diagram is introduced.  ...  This article analyzes the problem of finite satisfiability of class diagrams with class hierarchy constraints and generalization-set constraints.  ...  We thank Gera Weiss and Arnon Sturm for fruitful consultations, and the anonymous referees for their invaluable comments.  ... 
doi:10.1145/2491509.2491518 fatcat:lddfcn6w5nezbchhdtyuuokvz4

Decomposition Based on Decision Diagrams [chapter]

David Bergman, Andre A. Cire
2016 Lecture Notes in Computer Science  
In recent years, decision diagrams (DDs) have proven useful for solving a variety of optimization problems, often closing long-standing instances from classical benchmarks.  ...  This technique is applied to a special case of the independent set problem and to unconstrained binary quadratic programming.  ...  Decision Diagrams for Binary Optimization For the purposes of this paper, we focus on solving binary optimization problems (BOPs), which are of the form max{f (x) : x ∈ S, x ∈ B n }, where n is the number  ... 
doi:10.1007/978-3-319-33954-2_4 fatcat:ikg4g6qxdnhkvfbyzg47lnasvq

Toupie=μ-calculus+constraints [chapter]

Antoine Rauzy
1995 Lecture Notes in Computer Science  
Toupie integrates a solver for systems of linear inequations over finite domains and uses an extension of Bryant's binary decision diagrams to encode relations.  ...  Combination of/,-calculus expressiveness, efficient coding and manipulation of relations through the use of n-ary decision diagrams and constraint solving technics make Toupie a powerfull tool to perform  ...  DDs versus BDDs Decision Diagrams : Decision Diagrams used in Toupie to encode relations are an extension for finite domains of the Bryant's Binary Decision Diagrams [4] .  ... 
doi:10.1007/3-540-60045-0_44 fatcat:fnkhwlymhfd43nun4hzefioay4

Smart Bound Selection for the Verification of UML/OCL Class Diagrams

Robert Clariso, Carlos A. Gonzalez, Jordi Cabot
2017 IEEE Transactions on Software Engineering  
Correctness of UML class diagrams annotated with OCL constraints can be checked using bounded verification techniques, e.g., SAT or constraint programming (CP) solvers.  ...  Hence, choosing suitable bounds is a non-trivial process as there is a trade-off between the verification time (faster for smaller domains) and the confidence in the result (better for larger domains).  ...  Tim Nelson for their valuable comments.  ... 
doi:10.1109/tse.2017.2777830 fatcat:zn2nhmkfarbgnozlev2xm7a42i

Building free Binary Decision Diagrams using SAT solvers

Robert Wille, Görschwin Fey, Rolf Drechsler
2007 Facta universitatis - series Electronics and Energetics  
Free Binary Decision Diagrams (FBDDs) are a data structure for the representation of Boolean functions.  ...  In contrast to Ordered Binary Decision Diagrams (OBDDs) FBDDs allow different variable orderings along each path.  ...  Binary decision diagrams As is well-known a Boolean function f can be represented by a Binary Decision Diagram (BDD) [1] .  ... 
doi:10.2298/fuee0703381w fatcat:77lwuvcgajhudku5ra44vmlvim

Encoding Linear Constraints with Implication Chains to CNF [chapter]

Ignasi Abío, Valentin Mayer-Eichberger, Peter J. Stuckey
2015 Lecture Notes in Computer Science  
For some problems which combine linear constraints with highly combinatorial constraints, the best solving method is translation to SAT.  ...  Translation of a single linear constraint to SAT is a well studied problem, particularly for cardinality and pseudo-Boolean constraints.  ...  linear constraints [5] , which in the special case of pseudo-Boolean constraints collapse to binary decision diagrams (BDDs).  ... 
doi:10.1007/978-3-319-23219-5_1 fatcat:tj62nn57dvelhlyvqxgr4pm5ha

Efficient Message Passing for 0-1 ILPs with Binary Decision Diagrams [article]

Jan-Hendrik Lange, Paul Swoboda
2021 arXiv   pre-print
Our algorithm is based on a decomposition of the original problem into subproblems that are represented as binary decision diagrams.  ...  We present experimental results on combinatorial problems from MAP inference for Markov Random Fields, quadratic assignment, discrete tomography and cell tracking for developmental biology and show promising  ...  First we define the type of binary decision diagrams we employ. Binary Decision Diagrams Definition 5 (Binary decision diagram).  ... 
arXiv:2009.00481v2 fatcat:aq3kyrwrkbe2dfpjy4fekhpdvq

General Symmetry Breaking Constraints [chapter]

Toby Walsh
2006 Lecture Notes in Computer Science  
We present some general constraints for breaking symmetries in constraint satisfaction problems. These constraints can be used to break symmetries acting on variables, values, or both.  ...  For example, a global constraint that combines together all the LexLeader constraints for row and column symmetries of a matrix model is NP-hard to propagate completely [5].  ...  Another representation used for a set variable is a binary decision diagram [16] .  ... 
doi:10.1007/11889205_46 fatcat:bu46uwzajbb4jnjt25k5jj7voq

An Arc-Consistency Algorithm for Dynamic and Distributed Constraint Satisfaction Problems

Georg Ringwelski
2005 Artificial Intelligence Review  
This paper presents the new DDAC4 algorithm for dynamic arc consistency enforcement in distributed Constraint Satisfaction Problems.  ...  It is the first algorithm for arc-consistency enforcement in this system setting. Arc-consistency is achieved whenever the overall system reaches quiescence after a constraint is added or deleted.  ...  For this, we need dynamic constraint processing with distributed knowledge, which will allow to undo wrong search decisions without a global view to the problem.  ... 
doi:10.1007/s10462-005-9003-9 fatcat:eg2fm2xgdrfmvczfpiy2w4bmze
« Previous Showing results 1 — 15 out of 13,979 results