Apache Solr Clustering Implementation
Intro:
CHANGES
$Id$
================== Release 3.6.0 ==================
* SOLR-2937: Configuring the number of contextual snippets used for
search results clustering. The hl.snippets parameter is now respected
by the clustering plugin, can be overridden by carrot.summarySnippets
if needed (Stanislaw Osinski).
* SOLR-2938: Clustering on multiple fields. The carrot.title and
carrot.snippet can now take comma- or space-separated lists of
field names to cluster (Stanislaw Osinski).
* SOLR-2939: Clustering of multilingual search results. The document's
language field be passed in the carrot.lang parameter, the carrot.lcmap
parameter enables mapping of language codes to ISO 639 (Stanislaw Osinski).
* SOLR-2940: Passing values for custom Carrot2 fields. The custom field
mapping are defined using the carrot.custom parameter (Stanislaw Osinski).
* SOLR-2941: NullPointerException on clustering component initialization
when schema does not have a unique key field (Stanislaw Osinski).
* SOLR-2942: ClassCastException when passing non-textual fields for
clustering (Stanislaw Osinski).
================== Release 3.5.0 ==================
(No Changes)
================== Release 3.4.0 ==================
* SOLR-2706: The carrot.lexicalResourcesDir parameter now works
with absolute directories (Stanislaw Osinski)
* SOLR-2692: Typo in param name fixed: "carrot.fragzise" changed to
"carrot.fragSize" (Stanislaw Osinski).
================== Release 3.3.0 ==================
* SOLR-2620: Removed unnecessary log4j jar (Dawid Weiss).
================== Release 3.2.0 ==================
* SOLR-2448: Search results clustering updates: bisecting k-means
clustering algorithm added, loading of Carrot2 stop words from
for clustering (SOLR-2450), output of cluster scores (SOLR-2505).
================== Release 3.1.0 ==================
* SOLR-1684: Switch to use the SolrIndexSearcher.doc(int, Set<String>) method b/c it can use the document cache (gsingers)
* SOLR-1692: Fix bug relating to carrot.produceSummary option (gsingers)
* SOLR-1804: Re-enabled clustering on trunk, updated to latest version of Carrot2. No more LGPL run-time dependencies.
This release of C2 also does not have a specific Lucene dependency. (Stanislaw Osinski, gsingers)
* SOLR-2282: Add distributed search support for search result clustering.
(Brad Giaccio, Dawid Weiss, Stanislaw Osinski, rmuir, koji)
================== Release 1.4.0 ==================
Solr Clustering will be released for the first time in Solr 1.4. See http://wiki.apache.org/solr/ClusteringComponent
for details on using.