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    <title>PFS-JIRA</title>
    <link>https://pfspipe.ipmu.jp/jira</link>
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        <build-number>803005</build-number>
        <build-date>13-09-2019</build-date>
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<item>
            <title>[REDMINE1D-218] [RM-7100] pdf and probabilities for stars</title>
                <link>https://pfspipe.ipmu.jp/jira/browse/REDMINE1D-218</link>
                <project id="11002" key="REDMINE1D">1D Redmine </project>
                    <description>&lt;p&gt;&lt;em&gt;&lt;font color=&quot;#505f79&quot;&gt; Created on 2022-03-07 10:27:52 by Didier Vibert. % Done: 0&lt;/font&gt;&lt;/em&gt;&lt;/p&gt;


&lt;p&gt;currently the pdf for stars, build from parameter pdfcombination=&quot;bestchi&quot;, is constructed by taking at each z  the best chi2 among all templates&lt;/p&gt;

&lt;p&gt;instead it should be : the pdf build from the chi2 of the same template at all z, being the one that gives the minimum chi2 over all z and all templates. &lt;/p&gt;

&lt;p&gt;at the same time we should compute the modelPDF, ie the probability of each template, build from summing the zPDF  over z.&lt;/p&gt;

&lt;p&gt;and start a thinking about a ML reliability with modelPDF which is scheduled in the Euclid datamodel &lt;/p&gt;</description>
                <environment></environment>
        <key id="23631">REDMINE1D-218</key>
            <summary>[RM-7100] pdf and probabilities for stars</summary>
                <type id="3" iconUrl="https://pfspipe.ipmu.jp/jira/secure/viewavatar?size=xsmall&amp;avatarId=10518&amp;avatarType=issuetype">Task</type>
                                            <priority id="10000" iconUrl="https://pfspipe.ipmu.jp/jira/images/icons/priorities/medium.svg">Normal</priority>
                        <status id="3" iconUrl="https://pfspipe.ipmu.jp/jira/images/icons/statuses/inprogress.png" description="This issue is being actively worked on at the moment by the assignee.">In Progress</status>
                    <statusCategory id="4" key="indeterminate" colorName="yellow"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="r2j.migrate">Redmine-Jira Migtation</assignee>
                                    <reporter username="r2j.migrate">Redmine-Jira Migtation</reporter>
                        <labels>
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                <created>Wed, 5 Jul 2023 06:13:53 +0000</created>
                <updated>Mon, 4 Dec 2023 18:50:52 +0000</updated>
                                                                                <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                <comments>
                            <comment id="36305" author="r2j.migrate" created="Mon, 4 Dec 2023 18:49:50 +0000"  >&lt;p&gt;Comment by Didier Vibert on 2023-05-16 13:26:00:&lt;br/&gt;
@pychabau &#224; propos de maj du datamodel euclid, la derni&#232;re phrase de la description est d&apos;actualit&#233;  ? &lt;/p&gt;</comment>
                            <comment id="36306" author="r2j.migrate" created="Mon, 4 Dec 2023 18:50:04 +0000"  >&lt;p&gt;Comment by Pierre-yves Chabaud on 2023-05-16 14:01:06:&lt;br/&gt;
On n&apos;a pas mis de PDF star dans le DM Euclid... mais on peut toujours ajouter ca.&lt;/p&gt;</comment>
                            <comment id="36307" author="r2j.migrate" created="Mon, 4 Dec 2023 18:50:14 +0000"  >&lt;p&gt;Comment by Vincent Le Brun on 2023-05-16 14:03:11:&lt;br/&gt;
je serai tent&#233; de la mettre, elle n&apos;est pas grande et si un jour on nous la demande, ou si quelqu&apos;un veut faire des calculs avec, &#231;a sera un peu compliqu&#233;&lt;/p&gt;</comment>
                            <comment id="36308" author="r2j.migrate" created="Mon, 4 Dec 2023 18:50:29 +0000"  >&lt;p&gt;Comment by Didier Vibert on 2023-05-16 16:02:31:&lt;br/&gt;
juste pour &#234;tre sur que tout le monde est sur la m&#234;me page, on ne parle pas d&apos;une pdf(z) mais d&apos;une pdf(model)&lt;/p&gt;</comment>
                            <comment id="36309" author="r2j.migrate" created="Mon, 4 Dec 2023 18:50:41 +0000"  >&lt;p&gt;Comment by Didier Vibert on 2023-05-23 15:27:14:&lt;br/&gt;
suite &#224; discussion avec @msarkis, voil&#224; une proposition de modif &#224; faire:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;renommer COperatorPdfz en COperatorPdf (ou COperatorModelandZPdf ? )&lt;/li&gt;
	&lt;li&gt;renommer Marginalize en MarginalizeOnModel&lt;/li&gt;
	&lt;li&gt;merger bestchi2 et bestproba en  bestProba (inclure le prior dans bestchi2, isoler le max du max, sortir la best zpdf, ie un seul model alors que bestproba prend la bestproba &#224; chaque z). Mais ne fonctionne qu&apos;avec un seul candidat (le max du max ou max_model_z), sinon il faut sortir une zpdf par candidat...&lt;/li&gt;
	&lt;li&gt;cr&#233;er une nouvelle m&#233;thode MarginalizeOnZ&lt;/li&gt;
	&lt;li&gt;calculer et stocker les couples (z, model_index) correspondant aux max, dans COperatorPdfz. Pour MarginalizeZPdf, on va faire une recherche des max sur la ZPdf(en z donc) et r&#233;cup&#233;rer l&apos;index du best model correspondant (actuellement cet index est calcul&#233; dans buildExtremaResult). Pour MarginalizeModelPdf, c&apos;est le sym&#233;trique qu&apos;il faut coder: recherche du/des best model sur la ModelPdf et r&#233;cup&#233;rer le best z correspondant &#224; chacun. Pour bestPoba, le couple z,model_index, sort naturellement par construction.&lt;/li&gt;
&lt;/ul&gt;
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