Yes, you can set engine specific parameters. Check the comments in your
snippety.
> Hi:
> I recently included the CLustering component into Solr and updated the
> requestHandler accordingly (in solrconfig.xml). Snippet of the Config for
> the CLuserting:
>
> <searchComponent
> name="clusteringComponent"
> enable="${solr.clustering.enabled:false}"
> class="org.apache.solr.handler.clustering.ClusteringComponent" >
> <!-- Declare an engine -->
> <lst name="engine">
> <!-- The name, only one can be named "default" -->
> <str name="name">default</str>
> <!--
> Class name of Carrot2 clustering algorithm. Currently available
> algorithms are:
>
> * org.carrot2.clustering.lingo.LingoClusteringAlgorithm
> * org.carrot2.clustering.stc.STCClusteringAlgorithm
>
> See http://project.carrot2.org/algorithms.html for the
> algorithm's characteristics. -->
> <str
> name="carrot.algorithm">org.carrot2.clustering.lingo.LingoClusteringAlgori
> thm</str> <!--
> Overriding values for Carrot2 default algorithm attributes. For
> a description of all available attributes, see:
> http://download.carrot2.org/stable/manual/#chapter.components. Use
> attribute key as name attribute of str elements below. These can be
> further overridden for individual requests by specifying attribute key as
> request parameter name and attribute value as parameter value.
> -->
> <str name="LingoClusteringAlgorithm.desiredClusterCountBase">20</str>
> </lst>
> <lst name="engine">
> <str name="name">stc</str>
> <str
> name="carrot.algorithm">org.carrot2.clustering.stc.STCClusteringAlgorithm<
> /str> </lst>
> </searchComponent>
>
> snippet of the Config for requestHandler
> <requestHandler name="standard" class="solr.SearchHandler"
> default="true"> <!-- default values for query parameters -->
> <lst name="defaults">
> <str name="echoParams">explicit</str>
> <!--
> <int name="rows">10</int>
> <str name="fl">*</str>
> <str name="version">2.1</str>
> -->
> <bool name="clustering">true</bool>
> <str name="clustering.engine">default</str>
> <bool name="clustering.results">true</bool>
> <!-- The title field -->
> <str name="carrot.title">headline</str>
> <str name="carrot.url">pi</str>
> <!-- The field to cluster on -->
> <str name="carrot.snippet">headline</str>
> <!-- produce summaries -->
> <bool name="carrot.produceSummary">true</bool>
> <!-- the maximum number of labels per cluster -->
> <!--<int name="carrot.numDescriptions">5</int>-->
> <!-- produce sub clusters -->
> <bool name="carrot.outputSubClusters">false</bool>
> </lst>
> <arr name="last-components">
> <str>clusteringComponent</str>
> </arr>
> </requestHandler>
>
>
> When I perform a search, I see that the Cluster section within the Solr
> results shows me results that are not quite consistent. There are two
> documents that are reported in two different documents
>
> Are there parameters that can be set that will prevent this from happening
> ?
>
>
> Thanks much
>
> Ramdev
