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Open AccessProceedings ArticleDOI

Efficient conflict driven learning in a boolean satisfiability solver

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TLDR
This paper generalizes various conflict driven learning strategies in terms of different partitioning schemes of the implication graph to re-examine the learning techniques used in various SAT solvers and propose an array of new learning schemes.
Abstract
One of the most important features of current state-of-the-art SAT solvers is the use of conflict based backtracking and learning techniques. In this paper, we generalize various conflict driven learning strategies in terms of different partitioning schemes of the implication graph. We re-examine the learning techniques used in various SAT solvers and propose an array of new learning schemes. Extensive experiments with real world examples show that the best performing new learning scheme has at least a 2/spl times/ speedup compared with learning schemes employed in state-of-the-art SAT solvers.

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Citations
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Proceedings ArticleDOI

BiGO: A Toolset to Support CS Students to Learn to Analyze Time Complexities of Algorithms

TL;DR: BiGO is presented, a tool to support the students to understand and learn to analyze the time complexity of algorithms in rigorous manner and the pedagogical goals of the tool and the system implementation architecture are outlined.
Journal ArticleDOI

Too much information: Why CDCL solvers need to forget learned clauses

TL;DR: It is demonstrated that clause learning (without being able to get rid of some clauses) can not only help the solver but can oftentimes deteriorate the solution process dramatically, and that the runtime distributions of CDCL solvers are multimodal.
Journal ArticleDOI

Towards better heuristics for solving bounded model checking problems

TL;DR: This paper presents a new way to improve the performance of the SAT-based bounded model checking problem by exploiting relevant information identified through the characteristics of the original problem through a new approach to building interesting heuristics based on the structure of the underlying problem.
Proceedings ArticleDOI

SATMargin: Practical Maximal Frequent Subgraph Mining via Margin Space Sampling

Muyi Liu, +1 more
TL;DR: A practical MFS mining algorithm that targets large MFSs, named SATMargin, that adopts random walk in the search space to perform efficient search and utilizes a customized conflict learning Boolean Satisfiability (SAT) algorithm to accelerate SM queries.
Dissertation

Search-space Aware Learning Techniques for Unbounded Model Checking and Path Delay Testing

TL;DR: This dissertation targets two related problems in Design Verification and Testing: Unbounded Model Checking and Path Delay Fault Testing, that commonly suffer from extremely large memory requirements, and proposes efficient representations and intelligent learning techniques that reason on the problem structure and take advantage of the repeated search space, thereby alleviating the memory required and time taken to solve these problems.
References
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Book

Computers and Intractability: A Guide to the Theory of NP-Completeness

TL;DR: The second edition of a quarterly column as discussed by the authors provides a continuing update to the list of problems (NP-complete and harder) presented by M. R. Garey and myself in our book "Computers and Intractability: A Guide to the Theory of NP-Completeness,” W. H. Freeman & Co., San Francisco, 1979.
Book

Introduction to Algorithms

TL;DR: The updated new edition of the classic Introduction to Algorithms is intended primarily for use in undergraduate or graduate courses in algorithms or data structures and presents a rich variety of algorithms and covers them in considerable depth while making their design and analysis accessible to all levels of readers.
Book

Genetic Algorithms

Journal ArticleDOI

Tabu Search—Part II

TL;DR: The elements of staged search and structured move sets are characterized, which bear on the issue of finiteness, and new dynamic strategies for managing tabu lists are introduced, allowing fuller exploitation of underlying evaluation functions.