Walker, S.: Subject access in online catalogues (1991)
0.00
0.002379629 = product of:
0.009518516 = sum of:
0.009518516 = weight(_text_:information in 5690) [ClassicSimilarity], result of:
0.009518516 = score(doc=5690,freq=2.0), product of:
0.06134496 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.034944877 = queryNorm
0.1551638 = fieldWeight in 5690, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=5690)
0.25 = coord(1/4)
- Abstract
- Discusses some of the methods of subject access to on-line catalohues (OPACs) and argues that none are entirley satisfactory. Describes 2 methods for improving subject access: best match searching; and automatic query expansion application and discusses their feasibility. Mentions emerging application standards for information retrieval and concludes that existing standards are incompatible with most methods for improving standards