{"id":78,"date":"2012-11-20T15:45:31","date_gmt":"2012-11-20T14:45:31","guid":{"rendered":"https:\/\/project.inria.fr\/plasma-lab\/?page_id=78"},"modified":"2013-01-10T14:09:44","modified_gmt":"2013-01-10T13:09:44","slug":"importance-sampling","status":"publish","type":"page","link":"https:\/\/project.inria.fr\/plasma-lab\/importance-sampling\/","title":{"rendered":"Importance sampling"},"content":{"rendered":"

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Download : ImportanceSampling.plasma<\/a><\/strong><\/p>\n

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Importance sampling works at the level of PLASMA’s intermediate language,\u00a0allowing importance sampling parameters\u00a0to be specified\u00a0in models described using ‘simple commands’. Simple commands resolve explicit\u00a0synchronisation, making the square brackets used for synchronisation channels obsolete. Parameters are specified by\u00a0replacing\u00a0the empty\u00a0square brackets [ ]\u00a0by angled brackets enclosing values, e.g.\u00a0.<\/p>\n

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We\u00a0created models\u00a0based on Example 1 of (Ridder\u00a02005<\/a>) to demonstrate the dramatic increase in performance possible using importnace sampling. The models and property files can be download here<\/a>.<\/div>\n
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The command line to run these models is:<\/p>\n<\/div>\n

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java -jar PLASMA.jar-runs[ -importance ]<\/div>\n
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The -importance\u00a0switch\u00a0instructs PLASMA to use\u00a0the importance sampling parameters it finds in the model file. Without this, it is necessary to perform a number of runs >>\u00a0the reciprocal of the probability.<\/div>\n
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Download : ImportanceSampling.plasma           Importance sampling works at the level of PLASMA’s intermediate language,\u00a0allowing importance sampling parameters\u00a0to be specified\u00a0in models described using ‘simple commands’. Simple commands resolve explicit\u00a0synchronisation, making the square brackets used for synchronisation channels obsolete. Parameters are specified by\u00a0replacing\u00a0the empty\u00a0square brackets [ ]\u00a0by angled\u2026<\/p>\n

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