Information retrieval

Information retrieval is the science of searching for documents, for information within documents, and for metadata about documents, as well as that of searching relational databases and the World Wide Web. There is overlap in the usage of the terms data retrieval, document retrieval, information retrieval, and text retrieval, but each also has its own body of literature, theory, praxis, and technologies. IR is

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  • Human-Computer Information Retrieval Lecture

    Human-Computer Information Retrieval Lecture

    Gary Marchionini discusses the intersection of information retrieval and human-computer interaction and the challenges of exploratory search.
  • Knowledge-based Information Retrieval with Wikipedia.

    Knowledge-based Information Retrieval with Wikipedia.

    Google Tech Talks October 31, 2008 ABSTRACT In knowledge-based information retrieval, search engines consult external sources of knowledge ontologies, taxonomies, thesauri, glossaries, gazeteers to help process the documents they encounter and the requests they receive. The idea is old, obvious, and compelling but results have been singularly unimpressive. The best performing and most widely used search systems are still those that deal in lexical character patterns without using any structured knowledge to understand them. Wikipedia is changing all that. This open, constantly evolving encyclopedia represents a vast pool of topics and semantic relations. It is arguably the largest knowledge base humanity has ever seen. At last we have a resource that is (or may be) sufficiently broad, deep, and timely to be applicable to open-domain information retrieval. However, it brings its own challenges. Wikipedia's haphazard and only partially machine-readable structure bears little resemblance to the carefully crafted knowledge bases that have been used to assist information retrieval in the past. This talk will discuss Wikipedia's promises and shortcomings, and describe ongoing investigations of how best to apply it to organizing and retrieving information. Speaker: David Milne David Milne is a PhD student at the University of Waikato in New Zealand, where he studies under the supervision of Prof. Ian H. Witten.
  • Brazil (Terry Gilliam, 1985) - Information Retrieval

    Brazil (Terry Gilliam, 1985) - Information Retrieval

    Sam's first day at work. Surreal, Gilliam style. Great.
  • Efficient and Flexible Information Retrieval Using a...

    Efficient and Flexible Information Retrieval Using a...

    Google Tech Talks January 11, 2007 ABSTRACT Today's large-scale IR systems are not implemented using general-purpose database systems, as the latter tend to be significantly less efficient than custom-built IR engines. This talk demonstrates how recent developments in hardware-conscious database architecture may however satisfy IR needs. The advantage is flexibility of experimentation, as implementing a retrieval system on top of a DBMS boils down to relational query formulation, rather than system programming. We demonstrate in the context of the TeraByte TREC efficiency task that our experimental MonetDB/X100 database system provides highly competitive results both regarding precision and...
  • The Future of Information Retrieval Part 1

    The Future of Information Retrieval Part 1

    Interviews with prominent experts in the field of information retrieval, internet search and text mining. Interviewer: Peter Kawinek www.matrixware.com
  • The Future of Information Retrieval Part 2

    The Future of Information Retrieval Part 2

    Interviews with prominent experts in the field of information retrieval, internet search and text mining. Interviewer: Peter Kawinek www.matrixware.com
  • Information Retrieval Course Example

    Information Retrieval Course Example

    PubMed Limits
  • MGS: The Monkey Gear Incident - EP1 - Information Retrieval

    MGS: The Monkey Gear Incident - EP1 - Information Retrieval

    Metal Gear Solid: The Monkey Gear Incident Episode 1: "Information Retrieval" ---------------------------------------- Snake is sent on a simple mission to infiltrate the city of Teabag and retrieve a microfilm containing unknown data. ---------------------------------------- This was intended to just be just a single episode thing, but many encouraged me to take it further. So I did... Enjoy the video.
  • Human-Computer Information Retrieval Lecture

  • Knowledge-based Information Retrieval with Wikipedia.

  • Brazil (Terry Gilliam, 1985) - Information Retrieval

  • Efficient and Flexible Information Retrieval Using a...

  • The Future of Information Retrieval Part 1

  • The Future of Information Retrieval Part 2

  • Information Retrieval Course Example

  • MGS: The Monkey Gear Incident - EP1 - Information Retrieval

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