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    <language>en-uk</language>    <build-info>
        <version>9.4.2</version>
        <build-number>940002</build-number>
        <build-date>19-01-2023</build-date>
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<item>
            <title>[MGNLPER-106] Cleanup the ranking workspace when changing the neural network size</title>
                <link>https://jira.magnolia-cms.com/browse/MGNLPER-106</link>
                <project id="14882" key="MGNLPER">Periscope</project>
                    <description>&lt;p&gt;When changing the outputUnits value (for instance from default 10000 to 1000) in order to reduce NN size, if one doesn&apos;t cleanup the ranking workspace, an exception similar to the following will show in the logs upon selecting one search result.&lt;/p&gt;

&lt;p&gt;This is because the neural network loaded in memory was created with the previous configuration which doesn&apos;t match the new one.&lt;/p&gt;


&lt;div class=&quot;code panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;codeContent panelContent&quot;&gt;
&lt;pre class=&quot;code-java&quot;&gt;
2019-03-21 12:32:53,293 ERROR gnolia.periscope.rank.ml.NeuralNetworkResultRanker: Failed to train ranking neural network
*java.lang.IllegalArgumentException: Labels and preOutput must have equal shapes: got shapes [1, 10000] vs [1, 1000]*
	at org.nd4j.base.Preconditions.throwEx(Preconditions.java:636) ~[nd4j-common-1.0.0-beta3.jar:?]
	at org.nd4j.linalg.lossfunctions.impl.LossMCXENT.computeGradient(LossMCXENT.java:155) ~[nd4j-api-1.0.0-beta3.jar:1.0.0-beta3]
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;</description>
                <environment></environment>
        <key id="75126">MGNLPER-106</key>
            <summary>Cleanup the ranking workspace when changing the neural network size</summary>
                <type id="3" iconUrl="https://jira.magnolia-cms.com/secure/viewavatar?size=xsmall&amp;avatarId=10898&amp;avatarType=issuetype">Task</type>
                                            <priority id="6" iconUrl="https://jira.magnolia-cms.com/images/icons/priorities/neutral.gif">Neutral</priority>
                        <status id="6" iconUrl="https://jira.magnolia-cms.com/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are not closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Obsolete</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="slutz">Simon Lutz</reporter>
                        <labels>
                    </labels>
                <created>Mon, 15 Apr 2019 14:10:21 +0200</created>
                <updated>Thu, 22 Sep 2022 14:54:07 +0200</updated>
                            <resolved>Thu, 22 Sep 2022 14:54:07 +0200</resolved>
                                                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
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