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What is IR?

What is IR?. In the 70’s and 80’s, much of the research focused on document retrieval In 90’s TREC reinforced the view that IR = document retrieval Document retrieval is important e.g. Web search! But researchers work on a range of retrieval-related language technologies: question answering

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What is IR?

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  1. What is IR? • In the 70’s and 80’s, much of the research focused on document retrieval • In 90’s TREC reinforced the view that IR = document retrieval • Document retrieval is important • e.g. Web search! • But researchers work on a range of retrieval-related language technologies: • question answering • cross-lingual retrieval • distributed retrieval • topic detection and tracking • multimedia retrieval • summarization

  2. IR and Database Systems • Typically differentiated by unstructured/structured data • What about marked-up text and semi-structured data? • Recent database papers on • nearest-neighbor and similarity search • distributed, peer-to-peer search • Web search • information extraction • text data mining • Boundaries continue to get fuzzier

  3. IR and Database Systems • Many proposals for database/IR integration • most recently in XML context, but goes back to the 70s • supporting a probabilistic framework is key • Integration vs. Cooperation • Semantic Web • lessons from the IR world • semantics or statistics?

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