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		<identifier>oai:zbc.uz.zgora.pl:78996</identifier>
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<dc:title xml:lang="pl"><![CDATA[Accelerating backtrack search with a best-first-search strategy]]></dc:title>
<dc:creator><![CDATA[Mann, Zoltán Ádám]]></dc:creator>
<dc:creator><![CDATA[Szép, Tamás]]></dc:creator>
<dc:subject xml:lang="pl"><![CDATA[best-first search]]></dc:subject>
<dc:subject xml:lang="pl"><![CDATA[backtrack]]></dc:subject>
<dc:subject xml:lang="pl"><![CDATA[branch-and-bound]]></dc:subject>
<dc:subject xml:lang="pl"><![CDATA[constraint satisfaction problems]]></dc:subject>
<dc:subject xml:lang="pl"><![CDATA[frequent restarting]]></dc:subject>
<dc:description xml:lang="pl"><![CDATA[Backtrack-style exhaustive search algorithms for NP-hard problems tend to have large variance in their runtime. This is because "fortunate" branching decisions can lead to finding a solution quickly, whereas "unfortunate" decisions in another run can lead the algorithm to a region of the search space with no solutions. In the literature, frequent restarting has been suggested as a means to overcome this problem.]]></dc:description>
<dc:description xml:lang="pl"><![CDATA[In this paper, we propose a more sophisticated approach: a best-first-search heuristic to quickly move between parts of the search space, always concentrating on the most promising region. We describe how this idea can be efficiently incorporated into a backtrack search algorithm, without sacrificing optimality. Moreover, we demonstrate empirically that, for hard solvable problem instances, the new approach provides significantly higher speed-up than frequent restarting.]]></dc:description>
<dc:publisher><![CDATA[Zielona Góra: Uniwersytet Zielonogórski]]></dc:publisher>
<dc:contributor><![CDATA[Korbicz, Józef (1951- ) - red.]]></dc:contributor>
<dc:contributor><![CDATA[Uciński, Dariusz - red.]]></dc:contributor>
<dc:date><![CDATA[2014]]></dc:date>
<dc:type xml:lang="pl"><![CDATA[artykuł]]></dc:type>
<dc:identifier><![CDATA[http://www.zbc.uz.zgora.pl/repozytorium/Content/78996/AMCS_2014_24_4_15.pdf]]></dc:identifier>
<dc:identifier><![CDATA[https://zbc.uz.zgora.pl/repozytorium/dlibra/publication/88827/edition/78996/content]]></dc:identifier>
<dc:identifier><![CDATA[oai:zbc.uz.zgora.pl:78996]]></dc:identifier>
<dc:source xml:lang="pl"><![CDATA[AMCS, volume 24, number 4 (2014)]]></dc:source>
<dc:source xml:lang="pl"><![CDATA[https://www.amcs.uz.zgora.pl/?action=papers&issue=59]]></dc:source>
<dc:language><![CDATA[eng]]></dc:language>
<dc:relation><![CDATA[oai:zbc.uz.zgora.pl:publication:88827]]></dc:relation>
<dc:rights xml:lang="pl"><![CDATA[Biblioteka Uniwersytetu Zielonogórskiego]]></dc:rights>
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