ERIC Number: ED033723
Record Type: RIE
Publication Date: 1969-Jan
Reference Count: N/A
Tests of Indexes. A Comparison of Keyword from Title Indexes With and Without Added Keywords and a Single Access Point per Document Alphabetic Subject Index.
Jahoda, G.; Stursa, Mary Lou
Three indexes to a collection of 3204 documents in the field of chemistry were test searched. The indexes are a keyword from title index without added keywords, a keyword from title index with added keywords, and a single access point per document alphabetic subject index. The three indexes were searched by 14 graduate chemistry students with 66 questions. Search results are characterized in terms of recall, precision, search time, and three other single figure measures. A measure of index performance based on recall, precision, and search time was developed. There is no statistically significant difference between search results with the multiple access points per document keyword from title index and the single access point per document alphabetic subject index. Statistically significant differences in search results were found between the keyword from title index with added keywords and the keyword from title index without added keywords. The effect of the size of the delete word list and of elements of vocabulary control in keyword from title indexes was also studied. (Author)
Descriptors: Chemistry, Comparative Analysis, Indexes, Information Retrieval, Keywords, Performance Criteria, Search Strategies, Subject Index Terms
Clearinghouse for Federal Scientific and Technical Information, Springfield, Va. 22151 (AD-683 750; MF-$0.65, HC-$3.00)
Publication Type: N/A
Education Level: N/A
Sponsor: Air Force Office of Scientific Research, Washington, DC.
Authoring Institution: Florida State Univ., Tallahassee. Library School.