✦ LIBER ✦

High-level language implementation of bit map inverted files

✍ Scribed by Don P. Ragan; Steven A. Jones

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 818 KB
Volume: 11
Category: Article
ISSN: 0010-4809
DOI: 10.1016/0010-4809(78)90037-x

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✦ Synopsis

A system of bit map inverted files has been implemented on an interactive interpreter computer system (MUMPS-PC). This has made search performance previously available only in machine language available to the high-level language programmer. The superior flexibility of the technique over conventional inverted files is shown for retrievals including inequalities. Increased storage overhead for the bit maps is 32% as opposed to 126% for conventional inverted files. Typical bit map searches are about 10 times faster than exhaustive file searching.

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