Information Retrieval - Research Article from Macmillan Science Library: Computer Sciences

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History of Information Retrieval

Almost as soon as computers were developed, information scientists suggested that the new machines had the potential to perform text processing as well as arithmetical operations. By representing text as ASCII characters, queries formulated as character strings could be matched against the character strings in documents. The first computer-based IR systems, which appeared in the 1950s, were based on punched cards. These were followed in the 1960s by systems based on storage of the database on magnetic tape.

These first systems were hampered by the limited processing power of early computers, and the limited capacity for and high cost of storage. They operated offline, in a batch processing mode. It was not until the 1970s that IR systems made it possible for users to submit their queries and obtain an immediate response, allowing them to view the results and modify their queries as...

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This section contains 2,039 words
(approx. 7 pages at 300 words per page)
Buy the Information Retrieval Encyclopedia Article
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Macmillan Science Library: Computer Sciences
Information Retrieval from Macmillan Science Library: Computer Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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