November 2013, Apache Luceneā„¢ 4.6 available
The Lucene PMC is pleased to announce the release of Apache Lucene 4.6

Apache Lucene is a high-performance, full-featured text search engine
library written entirely in Java. It is a technology suitable for nearly
any application that requires full-text search, especially cross-platform.

This release contains numerous bug fixes, optimizations, and
improvements, some of which are highlighted below. The release
is available for immediate download at:

See the CHANGES.txt file included with the release for a full list of

Lucene 4.6 Release Highlights:

* Added support for NumericDocValues field updates (without re-indexing the document) through IndexWriter.updateNumericDocValue(Term, String, Long).

* New FreeTextSuggester can predict the next word using a simple ngram language model useful for "long tail" suggestions.

* A new expression module allows for customized ranking with script-like syntax.

* A new DirectDocValuesFormat can hold all doc values in heap as uncompressed java native arrays.

* Term.hasFreqs can now determine if a given field indexed per-doc term frequencies.

* Various bugfixes and optimizations since the 4.5.1 release.

Please read CHANGES.txt for a full list of new features.

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