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Apache Lucene for Mac

Open-source search engine library written entirely in Java.

In English
Version 9.2.0

Apache Lucene overview

Apache Lucene

is a high-performance, full-featured search engine library written entirely in Java. It is a technology suitable for nearly any application that requires structured search, full-text search, faceting, nearest-neighbor search across high-dimensionality vectors, spell correction or query suggestions.

Apache Lucene is an open source project available for free download. Please use the links on the right to access Lucene.

Main features:
  • Scalable, High-Performance Indexing
    • Over 800GB/hour on modern hardware
    • Small RAM requirements -- only 1MB heap
    • Incremental indexing as fast as batch indexing
    • Index size roughly 20-30% the size of text indexed
  • Powerful, Accurate and Efficient Search Algorithms
    • Ranked searching -- best results returned first
    • Many powerful query types: phrase queries, wildcard queries, proximity queries, range queries and more
    • Fielded searching (e.g. title, author, contents)
    • Nearest-neighbor search for high-dimensionality vectors
    • Sorting by any field
    • Multiple-index searching with merged results
    • Allows simultaneous update and searching
    • Flexible faceting, highlighting, joins and result grouping
    • Fast, memory-efficient and typo-tolerant suggesters
    • Pluggable ranking models, including the Vector Space Model and Okapi BM25
    • Configurable storage engine (codecs)
  • Cross-Platform Solution
    • Available as Open Source software under the Apache License which lets you use Lucene in both commercial and Open Source programs
    • 100%-pure Java
    • Implementations in other programming languages available that are index-compatible
  • What’s new in version 9.2.0

    • Numerous improvements to indexing and query performance for KNN vectors
    • More efficient implementations for count operations on range queries
    • A new FieldExistsQuery that chooses the best index structures to run over for you
    • A new Persian stemmer

    Apache Lucene for Mac

    In English
    Version 9.2.0
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