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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 user's
query and produces a set of HitsCluster
that can be displayed to help
the user gain 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.
Field Summary | |
static String |
X_POINT_ID
The name of the extension point. |
Method Summary | |
HitsCluster[] |
clusterHits(HitDetails[] hitDetails,
String[] descriptions)
Clusters an array of hits ( HitDetails objects) and
their previously extracted summaries (String s). |
Field Detail |
public static final String X_POINT_ID
Method Detail |
public HitsCluster[] clusterHits(HitDetails[] hitDetails, String[] descriptions)
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).
HitsCluster
objects.
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