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True to cluster the query results. In this case, IDOL Content Component returns the number of the cluster into which it has grouped each result. You can use ClusterThreshold to set the percentage relevance that results must have to each other to be grouped in one cluster.
Each cluster is given an ID. ID
1 is given to the cluster that is formed around the most relevant result document. After this cluster is formed, the cluster with the ID
2 is formed around the most relevant of the remaining results, and so on.
ClusterThreshold configuration parameter