org.apache.nutch.clustering: public interface: OnlineClusterer

org.apache.nutch.clustering
public interface: OnlineClusterer [javadoc | source]

All Implemented Interfaces:
Pluggable

All Known Implementing Classes:
Clusterer

An extension point interface for online search results clustering algorithms.

By the term online search results clustering we will understand a clusterer that works on a set of HitDetails retrieved for a query and able to produce a set of HitsCluster that can be displayed to help the user gain more insight in the topics found in the result.

Other clustering options include predefined categories and off-line preclustered groups, but I do not investigate those any further here.

author: Dawid - Weiss

version: $ - Id: OnlineClusterer.java,v 1.1 2004/08/09 23:23:52 johnnx Exp $

Field Summary
public static final String	X_POINT_ID	The name of the extension point.

Method from org.apache.nutch.clustering.OnlineClusterer Summary:
clusterHits

Method from org.apache.nutch.clustering.OnlineClusterer Detail:
public HitsCluster[] clusterHits(HitDetails[] hitDetails, String[] descriptions) Clusters an array of hits (HitDetails objects) and their previously extracted summaries (`String`s). Arguments to this method may seem to be very low-level, but in fact they are side products of a regular search process, so we simply reuse them instead of duplicating part of the usual Nutch functionality. Other ideas are welcome. This method must be thread-safe (many threads may invoke it concurrently on the same instance of a clusterer).

Method from org.apache.nutch.clustering.OnlineClusterer Detail:

 public HitsCluster[] clusterHits(HitDetails[] hitDetails,
    String[] descriptions)Clusters an array of hits (HitDetails  objects) and
their previously extracted summaries (Strings).

Arguments to this method may seem to be very low-level, but
in fact they are side products of a regular search process,
so we simply reuse them instead of duplicating part of the usual
Nutch functionality. Other ideas are welcome.

This method must be thread-safe (many threads may invoke
it concurrently on the same instance of a clusterer).