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Solr uses Carrot2 to complete the clustering function, which can automatically classify the retrieved content. Carrot2 clustering example:

For Solr to support clustering, it is preferred to copy the dist/ solr-clustering-4.2.0.jar in the Solr distribution to\ solr\ contrib\ analysis-extras\ lib. Then open solrconfig.xml to add configuration:

Default

Org.carrot2.clustering.lingo.LingoClusteringAlgorithm

thirty

0.70

0

Org.carrot2.clustering.lingo.SimpleLabelAssigner

1.5

eight

eight

HIGH

Org.carrot2.matrix.factorization.NonnegativeMatrixFactorizationEDFactory

37500

2.0

0.9

Org.carrot2.text.vsm.TfTermWeighting

CHINESE_SIMPLIFIED

Org.carrot2.text.clustering.MultilingualClustering.LanguageAggregationStrategy.FLATTEN_MAJOR_LANGUAGE

True

True

True

True

True

True

True

0.65

False

two

True

one

one

Clustering/carrot2

Id

After the clustering component is configured, configure requestHandler as follows:

Explicit

True

Default

True

Category_s

Content

Path

True

Clustering

There are two parameters to note that carrot.title,carrot.snippet is the comparative calculation field of clustering, these two parameters must be stored= "true" .carrot.title is more important than carrot.snippet, if there is only one calculated field carrot.snippet can be removed (is removed, not empty). After setting it up, you can use the following URL to query it.

Http://localhost:8080/skyCore/clustering?q=*%3A*&wt=xml&indent=true

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