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    <title>Workflow Satisfiability Problem with User-Independent Constraints: Instances, Instance Generator and Algorithms</title>
    <abstract>Source code and data for the publication:
Daniel Karapetyan, Andrew J. Parkes, Gregory Gutin, Andrei Gagarin.  Pattern-Based Approach to the Workflow Satisfiability Problem with User-Independent Constraints.  To appear in Journal of Artificial Intelligence Research.

Includes:
- Source code of an instance generator for the Workflow Satisfiability Problem with User-Independent Constraints (WSP) (part of the C# tool)
- Parameters of benchmark instances
- Benchmark instances with solutions
- Source code of the Pattern Backtracking Algorithm (PBT) (part of the C# tool)
- Translator of WSP instances into Pseudo-Boolean formulation (part of the C# tool)
- Translator of WSP instances into Constraint Satisfaction Problem formulation (CspRunner.py)</abstract>
    <keywords>
      <item>Workflow Satisfiability Problem with User-Independent Constraints</item>
      <item>Phase transition</item>
      <item>Constraint Satisfaction</item>
      <item>Pseudo-Boolean Formulation</item>
      <item>Fixed Parameter Tractability</item>
      <item>Benchmark instances</item>
    </keywords>
    <subjects>
      <item>QA75</item>
      <item>QA76</item>
    </subjects>
    <divisions>
      <item>sch_ecs</item>
    </divisions>
    <creators>
      <item>
        <name>
          <family>Karapetyan</family>
          <given>Daniel</given>
        </name>
        <id>daniel.karapetyan@gmail.com</id>
        <affiliation>University of Essex</affiliation>
        <orcid_id>http://orcid.org/0000-0003-4030-6525</orcid_id>
      </item>
    </creators>
    <data_type>
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      <item>Code</item>
      <item>Numeric</item>
      <item>Database</item>
    </data_type>
    <contributors>
      <item>
        <name>
          <family>Parkes</family>
          <given>Andrew</given>
        </name>
      </item>
      <item>
        <name>
          <family>Gutin</family>
          <given>Gregory</given>
        </name>
      </item>
      <item>
        <name>
          <family>Gagarin</family>
          <given>Andrei</given>
        </name>
      </item>
    </contributors>
    <collection_dates>
      <date_from>2013-02-01</date_from>
      <date_to>2016-04-30</date_to>
    </collection_dates>
    <metadata_language>English</metadata_language>
    <language>English</language>
    <copyright_holders>
      <item>
        <name>
          <family>Karapetyan</family>
          <given>Daniel</given>
        </name>
        <id>daniel.karapetyan@gmail.com</id>
        <affiliation>University of Essex</affiliation>
        <orcid_id>http://orcid.org/0000-0003-4030-6525</orcid_id>
      </item>
    </copyright_holders>
    <date>2019-07-13</date>
    <publisher>University of Essex</publisher>
    <doi>10.5526/ERDR-00000114</doi>
    <award_grant_number>EP/K005162/1</award_grant_number>
    <award>Parameterized Algorithmics for the Analysis and Verification of Constrained Workflow Systems</award>
    <award_funders>
      <item>EPSRC</item>
    </award_funders>
    <award_dates>
      <date_from>2013-02-01</date_from>
      <date_to>2016-04-30</date_to>
    </award_dates>
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