AIRE (Advanced Information Retrieval Engine) is a portable IR engine written in 100% pure Java™. The system is designed to provide an indexing foundation for new IR techniques. The indexing system supports different retrieval strategies giving it state-of-the-art search capabilities. The indexing system is designed to be flexible so new document types can be easily added. Current support for pdf, ps, HTML, SGML and email is available or underdevelopment.

See AIRE in action at the Institute of Design search page.

AIRE Feature List

	Portable IR indexer and query engine written in 100% pure Java™
	Distributed Indexing - Indexing speed scale for Multi-Processor or NOW configurations
	Boolean, VSM, Probabilistic retrieval methods
	Stemming:
		Porter stemming
		K-Stem equivalence classes
	Automatic phrase detection and generation for better searching and indexing
	N-Term phrase search abilities
	Duplicate document detection
	Web enabled Java Servlet Query Interface
	Indexing and querying for millions of documents of different types
	Fast retrieval data structures.
	Flexible object oriented architecture designed to be extended.
	Configurable indexing options, for position information storage, stemming, stop words, etc.
	Advanced ranking algorithms implemented, with hooks for customized algorithms.
	TReC - Topic P/R test system for evaluation of new search strategies.
	Index Document types supported or underdevelopment:
		SGML - TReC document parsing
		HTML - HTML Document support
		Text - Text file support
		PDF - PDF support
		Email
		XML