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ERIC Number: ED065145
Record Type: Non-Journal
Publication Date: 1971-Jun-4
Pages: 17
Abstractor: N/A
Reference Count: N/A
Term Fragment Analysis for Inversion of Large Files.
Schipma, Peter B.
Words and word fragments from the computer-readable data bases "Chemical Abstracts Condensates" and "Biological Abstracts Previews" were analyzed in terms of length, number, and frequency of appearance to determine some parameters upon which inversion of these data bases could be predicated. Types (unique words or fragments) and tokens (all appearances of types) were counted and type:token ratios calculated. A KLIC (Key-letter-in-Context) Index was also generated from each of the data bases. The paper discusses the impact of the various counts, ratios and projections on the problem of inverting the data bases for retrospective search purposes. (Author)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: Illinois Inst. of Tech., Chicago. Research Inst.