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Algorithms for stochastic constraint satisfaction problems
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return false; else return true; } </script><!--[if lt IE 9]> <script src="/themes/Mirage2_precompiled/vendor/html5shiv/dist/html5shiv.js"> </script> <script src="/themes/Mirage2_precompiled/vendor/respond/respond.min.js"> </script> <![endif]--><script src="/themes/Mirage2_precompiled/vendor/modernizr/modernizr.js"> </script><script src="/themes/Mirage2_precompiled/scripts/heal-ac.js"> </script><script src="/themes/Mirage2_precompiled/scripts/Chart.js"> </script><script src="https://www.google.com/recaptcha/api.js?render=6LcTo_YUAAAAANV_wFCmUP7UPo1En13J0gnjd88j"></script> <title>Algorithms for stochastic constraint satisfaction problems</title> <link rel="schema.DCTERMS" href="http://purl.org/dc/terms/" /> <link rel="schema.DC" href="http://purl.org/dc/elements/1.1/" /> <meta name="DC.contributor" content="Στεργίου, Κωνσταντίνος" xml:lang="el_GR" /> <meta name="DC.creator" content="Μπαλαφούτης, Αθανάσιος - Δημήτριος" xml:lang="el_GR" /> <meta name="DCTERMS.spatial" content="Σάμος" xml:lang="el_GR" /> <meta name="DCTERMS.dateAccepted" content="2015-11-18T10:39:42Z" scheme="DCTERMS.W3CDTF" /> <meta name="DCTERMS.available" content="2015-11-18T10:39:42Z" scheme="DCTERMS.W3CDTF" /> <meta name="DCTERMS.issued" content="2006" xml:lang="el_GR" scheme="DCTERMS.W3CDTF" /> <meta name="DC.identifier" content="https://vsmart.lib.aegean.gr/webopac/FullBB.csp?WebAction=ShowFullBB&EncodedRequest=*40*14*F4a*A2*EB*7D*D2*1DD*40*A5*B8*20*C3*E7&Profile=Default&OpacLanguage=gre&NumberToRetrieve=50&StartValue=2&WebPageNr=1&SearchTerm1=2006%20.1.30929&SearchT1=&Index1=Keywordsbib&SearchMethod=Find_1&ItemNr=2" /> <meta name="DC.identifier" content="http://hdl.handle.net/11610/12485" scheme="DCTERMS.URI" /> <meta name="DCTERMS.abstract" content="This thesis consists of six chapters. Chapter1 includes a general introduction in the area of interest. The related work that has been done in CSPs and SCSPs is reviewed in Chapter 2. We also describe here the main algorithms that have been proposed for solving stochastic constraint satisfaction problems.In Chapter 3 we propose a generalized arc consistency (GAC) algorithm for SCSPs. This algorithm extends the GAC algorithm AC2001/3.1 with specialized features, so that SCSPs can be handled. We also explain how arc consistency reasoning can be performed when “chance” constraints are present in a problem. In Chapter 4 we introduce new search algorithms for solving stochastic constraint satisfaction problems. We first identify and correct a flaw in the forward checking (FC) algorithm given in [Walsh02]. We also describe an improved version of FC which exploits probabilities in a more “global” way and in this way results in stronger pruning. Then we introduce a Maintaining Arc Consistency (MAC) algorithm for SCSPs. In contrast with [Walsh02], where the given algorithms can only handle binary constraints, our MAC algorithm is able to handle constraints of any arity. The chapter ends with the presentation of some heuristics which increase the efficiency of the above search algorithms.A set of experiments is presented in Chapter 5. These experiments demonstrate the effect that the flaw has in the FC algorithm of [Walsh02] and depict the achieved improvement of our new FC algorithm. We also present experiments with FC that uses arc consistency as a preprocessing technique.Finally Chapter 6 concludes the thesis by summarizing the results reported here and gives some directions for future work." xml:lang="el_GR" /> <meta name="DC.language" content="en" xml:lang="en_US" scheme="DCTERMS.RFC1766" /> <meta name="DC.subject" content="Στοχαστικά προβλήματα ικανοποίησης περιορισμών" xml:lang="el_GR" /> <meta name="DC.subject" content="Συνέχεια Τόξου" xml:lang="el_GR" /> <meta name="DC.subject" content="Αλγόριθμοι αναζήτησης" xml:lang="el_GR" /> <meta name="DC.subject" content="Αλγόριθμος οπισθοδρόμησης" xml:lang="el_GR" /> <meta name="DC.subject" content="Αλγόριθμος ελέγχου προς τα εμπρός" xml:lang="el_GR" /> <meta name="DC.subject" content="Stochastic Constraint Satisfaction Problem" xml:lang="el_GR" /> <meta name="DC.subject" content="Arc Consistency" xml:lang="el_GR" /> <meta name="DC.subject" content="BackTracking Algorithm" xml:lang="el_GR" /> <meta name="DC.subject" content="Forward Checking" xml:lang="el_GR" /> <meta name="DC.subject" content="Constraint programming (Computer science)" scheme="DCTERMS.LCSH" /> <meta name="DC.subject" content="Algorithms" scheme="DCTERMS.LCSH" /> <meta name="DC.subject" content="Constraints (Artificial intelligence)" scheme="DCTERMS.LCSH" /> <meta name="DC.title" content="Algorithms for stochastic constraint satisfaction problems" xml:lang="el_GR" /> <meta name="DC.contributor" content="Μπαλαφούτης, Αθανάσιος - Δημήτριος - 6937309079 - - - icsdm04017@icsd.aegean.gr - 6937309079" xml:lang="el_GR" /> <meta content="Μπαλαφούτης, Αθανάσιος - Δημήτριος" name="citation_authors"> <meta content="http://hellanicus.lib.aegean.gr/bitstream/11610/12485/2/file0.pdf" name="citation_pdf_url"> <meta content="Στοχαστικά προβλήματα ικανοποίησης περιορισμών; Συνέχεια Τόξου; Αλγόριθμοι αναζήτησης; Αλγόριθμος οπισθοδρόμησης; Αλγόριθμος ελέγχου προς τα εμπρός; Stochastic Constraint Satisfaction Problem; Arc Consistency; BackTracking Algorithm; Forward Checking" name="citation_keywords"> <meta content="2006" name="citation_date"> <meta content="http://hellanicus.lib.aegean.gr/handle/11610/12485" name="citation_abstract_html_url"> <meta content="Algorithms for stochastic constraint satisfaction problems" name="citation_title"> <meta content="en" name="citation_language"> </head><body> <header> <div role="navigation" class="navbar navbar-default navbar-static-top"> <div class="container"> <div class="navbar-header"> <button data-toggle="offcanvas" class="navbar-toggle" type="button"><span class="sr-only">Toggle navigation</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button><a class="navbar-brand" href="/"><img alt="Hellanicus Institutional Repository Logo" src="/themes/Mirage2_precompiled/images/hellanicus.png"></a> <div class="navbar-header pull-right visible-xs hidden-sm hidden-md hidden-lg"> <ul class="nav nav-pills pull-left "> <li class="dropdown" id="ds-language-selection-xs"> <button data-toggle="dropdown" class="dropdown-toggle navbar-toggle navbar-link" role="button" href="#" id="language-dropdown-toggle-xs"><b aria-hidden="true" class="visible-xs glyphicon glyphicon-globe"></b></button> <ul data-no-collapse="true" aria-labelledby="language-dropdown-toggle-xs" role="menu" class="dropdown-menu pull-right"> <li role="presentation"> <a href="http://hellanicus.lib.aegean.gr:80/handle/11610/12485?locale-attribute=el_GR">Ελληνικά (Ελλάδα)</a> </li> <li role="presentation" class="disabled"> <a href="http://hellanicus.lib.aegean.gr:80/handle/11610/12485?locale-attribute=en_US">English (United States)</a> </li> </ul> </li> <li> <form method="get" action="/login" style="display: inline"> <button class="navbar-toggle navbar-link"><b aria-hidden="true" class="visible-xs glyphicon glyphicon-user"></b></button> </form> </li> </ul> </div> </div> <div class="navbar-header pull-right hidden-xs"> <ul class="nav navbar-nav pull-left"> <li class="dropdown" id="ds-language-selection"> <a data-toggle="dropdown" class="dropdown-toggle" role="button" href="#" id="language-dropdown-toggle"><span class="hidden-xs">English (United States) <b class="caret"></b></span></a> <ul data-no-collapse="true" aria-labelledby="language-dropdown-toggle" role="menu" class="dropdown-menu pull-right"> <li role="presentation"> <a href="http://hellanicus.lib.aegean.gr:80/handle/11610/12485?locale-attribute=el_GR">Ελληνικά (Ελλάδα)</a> </li> <li role="presentation" class="disabled"> <a href="http://hellanicus.lib.aegean.gr:80/handle/11610/12485?locale-attribute=en_US">English (United States)</a> </li> </ul> </li> </ul> <ul class="nav navbar-nav pull-left"> <li> <a href="/login"><span class="hidden-xs">Login</span></a> </li> </ul> <button type="button" class="navbar-toggle visible-sm" data-toggle="offcanvas"><span class="sr-only">Toggle navigation</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button> </div> </div> </div> </header> <div class="trail-wrapper"> <div class="container"> <div class="row"> <div class="col-xs-12"> <div class="breadcrumb dropdown visible-xs"> <a data-toggle="dropdown" class="dropdown-toggle" role="button" href="#" id="trail-dropdown-toggle">View Item <b class="caret"></b></a> <ul aria-labelledby="trail-dropdown-toggle" role="menu" class="dropdown-menu"> <li role="presentation"> <a role="menuitem" href="/"><i aria-hidden="true" class="glyphicon glyphicon-home"></i> DSpace Home</a> </li> <li role="presentation"> <a role="menuitem" href="/handle/11610/1">Γκρίζα Βιβλιογραφία</a> </li> <li role="presentation"> <a role="menuitem" href="/handle/11610/21">Μεταπτυχιακές διατριβές</a> </li> <li role="presentation"> <a role="menuitem" href="/handle/11610/5413">Τμήμα Μηχανικών Πληροφοριακών και Επικοινωνιακών Συστημάτων</a> </li> <li role="presentation"> <a role="menuitem" href="/handle/11610/5414">Τεχνολογίες και Διοίκηση Πληροφοριακών και Επικοινωνιακών Συστημάτων</a> </li> <li role="presentation" class="disabled"> <a href="#" role="menuitem">View Item</a> </li> </ul> </div> <ul class="breadcrumb hidden-xs"> <li> <i aria-hidden="true" class="glyphicon glyphicon-home"></i> <a href="/">DSpace Home</a> </li> <li> <a href="/handle/11610/1">Γκρίζα Βιβλιογραφία</a> </li> <li> <a href="/handle/11610/21">Μεταπτυχιακές διατριβές</a> </li> <li> <a href="/handle/11610/5413">Τμήμα Μηχανικών Πληροφοριακών και Επικοινωνιακών Συστημάτων</a> </li> <li> <a href="/handle/11610/5414">Τεχνολογίες και Διοίκηση Πληροφοριακών και Επικοινωνιακών Συστημάτων</a> </li> <li class="active">View Item</li> </ul> </div> </div> </div> </div> <div class="hidden" id="no-js-warning-wrapper"> <div id="no-js-warning"> <div class="notice failure">JavaScript is disabled for your browser. 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Chapter1 includes a general introduction in the area of interest. The related work that has been done in CSPs and SCSPs is reviewed in Chapter 2. We also describe here the main algorithms that have been proposed for solving stochastic constraint satisfaction problems.In Chapter 3 we propose a generalized arc consistency (GAC) algorithm for SCSPs. This algorithm extends the GAC algorithm AC2001/3.1 with specialized features, so that SCSPs can be handled. We ...</div> </div> <div class="simple-item-view-uri item-page-field-wrapper table"> <h5>URI</h5> <span><a href="http://hdl.handle.net/11610/12485">http://hdl.handle.net/11610/12485</a></span> </div> <div class="simple-item-view-uri item-page-field-wrapper table"> <h5>Spatial Coverage</h5> <span>Σάμος</span> </div> <div class="simple-item-view-collections item-page-field-wrapper table"> <h5>Collections</h5> <ul class="ds-referenceSet-list"> <!-- External Metadata URL: cocoon://metadata/handle/11610/5414/mets.xml--> <li> <a href="/handle/11610/5414">Τεχνολογίες και Διοίκηση Πληροφοριακών και Επικοινωνιακών Συστημάτων</a> [388]</li> </ul> </div> <object height="785px" width="100%" type="application/pdf" data="/bitstream/handle/11610/12485/file0.pdf?sequence=2&isAllowed=y#toolbar=0&navpanes=0&scrollbar=1&page=1&view=FitW"></object></div> </div> </div> </div> </div> <div class="visible-xs visible-sm"> <footer> <div class="row"> <hr> <div class="col-xs-7 col-sm-8"> <div class="espalogo 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