Ellis, D.; Ford, N.; Furner, J.: In search of the unknown user : indexing, hypertext and the World Wide Web (1998)
0.00
3.255793E-4 = product of:
0.0048836893 = sum of:
0.0048836893 = product of:
0.009767379 = sum of:
0.009767379 = weight(_text_:information in 4714) [ClassicSimilarity], result of:
0.009767379 = score(doc=4714,freq=4.0), product of:
0.050870337 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.028978055 = queryNorm
0.1920054 = fieldWeight in 4714, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=4714)
0.5 = coord(1/2)
0.06666667 = coord(1/15)
- Abstract
- For the purposes of this article, the indexing of information is interpreted as the pre-processing of information in order to enable its retrieval. The definition thus spans a dimension extending from classification-based approaches (pre-co-ordinate) to keyword searching (post-co-ordinate). In the first section we clarify our use of terminology, by briefly describing a framework for modelling IR systems in terms of sets of objects, relationships and functions. In the following 3 sections, we discuss the application of indexing functions to document collections of 3 specific types: (1) 'conventional' text databases; (2) hypertext databases; and (3) the World Wide Web, globally distributed across the Internet