-
Ellis, D.; Furner-Hines, J.; Willett, P.: ¬The creation of hypertext links in full-text documents (1994)
0.01
0.007642254 = product of:
0.028021596 = sum of:
0.0066271294 = weight(_text_:a in 1084) [ClassicSimilarity], result of:
0.0066271294 = score(doc=1084,freq=16.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.2161963 = fieldWeight in 1084, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=1084)
0.019311246 = weight(_text_:r in 1084) [ClassicSimilarity], result of:
0.019311246 = score(doc=1084,freq=2.0), product of:
0.088001914 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.026584605 = queryNorm
0.2194412 = fieldWeight in 1084, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=1084)
0.0020832212 = weight(_text_:s in 1084) [ClassicSimilarity], result of:
0.0020832212 = score(doc=1084,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.072074346 = fieldWeight in 1084, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=1084)
0.27272728 = coord(3/11)
- Abstract
- An important stage in the process of retrieval of objects from a hypertext database is the creation of a set of internodal links that are intended to represent the relationships existing between objetcs; an operation that is usually undertaken manually such as the allocation of subject index terms to documents. Reports results of a study in which several different sets of hypertext links were inserted, each by a different person, between the paragraphs of each of a number of full text documents. The similarity between the members of each pair of link sets was then evaluated. Results indicated that little similarity existed among the link sets, a finding comparable with those of studies of inter indexer consistency, which suggests that there is generally only a low level of agreemenet between the sets of index terms assigned to a document by indexers. Concludes with that part of the study designed to test the validity of making these kinds of assumptions in the context of hypertext link sets
- Pages
- 200 S
- Type
- r
-
Ellis, D.; Wilson, T.D.; Ford, N.; Foster, A.; Lam, H.M.; Burton, R.; Spink, A.: Information seeking and mediated searching : Part 5: user-intermediary interaction (2002)
0.01
0.006941656 = product of:
0.025452739 = sum of:
0.0040582716 = weight(_text_:a in 5233) [ClassicSimilarity], result of:
0.0040582716 = score(doc=5233,freq=6.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.13239266 = fieldWeight in 5233, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=5233)
0.019311246 = weight(_text_:r in 5233) [ClassicSimilarity], result of:
0.019311246 = score(doc=5233,freq=2.0), product of:
0.088001914 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.026584605 = queryNorm
0.2194412 = fieldWeight in 5233, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=5233)
0.0020832212 = weight(_text_:s in 5233) [ClassicSimilarity], result of:
0.0020832212 = score(doc=5233,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.072074346 = fieldWeight in 5233, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=5233)
0.27272728 = coord(3/11)
- Source
- Journal of the American Society for Information Science and Technology. 53(2002) no.11, S.883-892
- Type
- a
-
Ellis, D.; Oldman, H.: ¬The English literature researcher in the age of the Internet (2005)
0.01
0.0062778774 = product of:
0.023018884 = sum of:
0.012690932 = product of:
0.025381863 = sum of:
0.025381863 = weight(_text_:h in 4657) [ClassicSimilarity], result of:
0.025381863 = score(doc=4657,freq=2.0), product of:
0.0660481 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.026584605 = queryNorm
0.38429362 = fieldWeight in 4657, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.109375 = fieldNorm(doc=4657)
0.5 = coord(1/2)
0.005467103 = weight(_text_:a in 4657) [ClassicSimilarity], result of:
0.005467103 = score(doc=4657,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.17835285 = fieldWeight in 4657, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=4657)
0.0048608496 = weight(_text_:s in 4657) [ClassicSimilarity], result of:
0.0048608496 = score(doc=4657,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.16817348 = fieldWeight in 4657, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=4657)
0.27272728 = coord(3/11)
- Source
- Journal of information science. 31(2005) no.1, S.29-
- Type
- a
-
Ellis, D.: Progress and problems in information retrieval (1996)
0.00
0.0034942513 = product of:
0.019218381 = sum of:
0.004810994 = weight(_text_:s in 789) [ClassicSimilarity], result of:
0.004810994 = score(doc=789,freq=6.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.1664486 = fieldWeight in 789, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=789)
0.014407388 = product of:
0.028814776 = sum of:
0.028814776 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
0.028814776 = score(doc=789,freq=2.0), product of:
0.09309476 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.026584605 = queryNorm
0.30952093 = fieldWeight in 789, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=789)
0.5 = coord(1/2)
0.18181819 = coord(2/11)
- Date
- 26. 7.2002 20:22:46
- Footnote
- Rez. in: Managing information 3(1996) no.10, S.49 (D. Bawden); Program 32(1998) no.2, S.190-192 (C. Revie)
- Pages
- 220 S
-
Ellis, D.: ¬A behavioral approach to information system design (1989)
0.00
0.0026166236 = product of:
0.01439143 = sum of:
0.008836173 = weight(_text_:a in 2706) [ClassicSimilarity], result of:
0.008836173 = score(doc=2706,freq=4.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.28826174 = fieldWeight in 2706, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=2706)
0.0055552567 = weight(_text_:s in 2706) [ClassicSimilarity], result of:
0.0055552567 = score(doc=2706,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 2706, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=2706)
0.18181819 = coord(2/11)
- Source
- Journal of documentation. 45(1989) no.3, S.171-212
- Type
- a
-
Ellis, D.: ¬A behavioral model for information retrieval system design (1989)
0.00
0.0026166236 = product of:
0.01439143 = sum of:
0.008836173 = weight(_text_:a in 2707) [ClassicSimilarity], result of:
0.008836173 = score(doc=2707,freq=4.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.28826174 = fieldWeight in 2707, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=2707)
0.0055552567 = weight(_text_:s in 2707) [ClassicSimilarity], result of:
0.0055552567 = score(doc=2707,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 2707, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=2707)
0.18181819 = coord(2/11)
- Source
- Journal of information science. 15(1989) no.4, S.237-247
- Type
- a
-
Ellis, D.: Information retrieval research (1997)
0.00
0.0022332703 = product of:
0.012282986 = sum of:
0.008116543 = weight(_text_:a in 1161) [ClassicSimilarity], result of:
0.008116543 = score(doc=1161,freq=6.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.26478532 = fieldWeight in 1161, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=1161)
0.0041664424 = weight(_text_:s in 1161) [ClassicSimilarity], result of:
0.0041664424 = score(doc=1161,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.14414869 = fieldWeight in 1161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=1161)
0.18181819 = coord(2/11)
- Abstract
- Presents a brief summary of the different approaches to research in the area of information retrieval and discusses the problem or undesirability of identifying a single approach as 'best' for the field
- Source
- Inform (London). 1997, no.200, S.3-4
- Type
- a
-
Ellis, D.: Theory and explanation in information retrieval research (1984)
0.00
0.002146068 = product of:
0.011803374 = sum of:
0.0062481174 = weight(_text_:a in 5337) [ClassicSimilarity], result of:
0.0062481174 = score(doc=5337,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20383182 = fieldWeight in 5337, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=5337)
0.0055552567 = weight(_text_:s in 5337) [ClassicSimilarity], result of:
0.0055552567 = score(doc=5337,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 5337, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=5337)
0.18181819 = coord(2/11)
- Source
- Journal of information science. 8(1984), S.25-38
- Type
- a
-
Ellis, D.: Paradigms in information retrieval research (1994)
0.00
0.002146068 = product of:
0.011803374 = sum of:
0.0062481174 = weight(_text_:a in 1261) [ClassicSimilarity], result of:
0.0062481174 = score(doc=1261,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20383182 = fieldWeight in 1261, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=1261)
0.0055552567 = weight(_text_:s in 1261) [ClassicSimilarity], result of:
0.0055552567 = score(doc=1261,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.19219826 = fieldWeight in 1261, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=1261)
0.18181819 = coord(2/11)
- Pages
- S.275-291
- Type
- a
-
Ellis, D.: ¬The physical and cognitive paradigms in information retrieval research (1992)
0.00
0.0016972774 = product of:
0.009335025 = sum of:
0.0031240587 = weight(_text_:a in 8161) [ClassicSimilarity], result of:
0.0031240587 = score(doc=8161,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.10191591 = fieldWeight in 8161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=8161)
0.0062109665 = weight(_text_:s in 8161) [ClassicSimilarity], result of:
0.0062109665 = score(doc=8161,freq=10.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.2148842 = fieldWeight in 8161, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=8161)
0.18181819 = coord(2/11)
- Footnote
- Vgl. auch den Leserbrief von B.C. Vickery in J. doc. 48(1992) no.3, S.326-328 und die Antwort von D. Ellis in J. doc. 48(1992) no.3, S.328-331 sowie B. Frohmann in J. doc. 50(1994) no.3, S.239-240 und D. Ellis in J. doc. 50(1994) no.3, S.241-242
- Source
- Journal of documentation. 48(1992) no.1, S.45-64
- Type
- a
-
Ellis, D.: Hypertext; origins and use (1991)
0.00
0.0016353898 = product of:
0.008994644 = sum of:
0.0055226083 = weight(_text_:a in 4916) [ClassicSimilarity], result of:
0.0055226083 = score(doc=4916,freq=4.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.18016359 = fieldWeight in 4916, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.078125 = fieldNorm(doc=4916)
0.0034720355 = weight(_text_:s in 4916) [ClassicSimilarity], result of:
0.0034720355 = score(doc=4916,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.120123915 = fieldWeight in 4916, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=4916)
0.18181819 = coord(2/11)
- Abstract
- Presents a brief introduction to the concept of hypertext illustrated with examples from experimental and operational systems. The origins of the hypertext concept are described and different generic types of hypertext systems outlined. The potential and problems of hypertext are discussed with particular reference to information retrieval
- Source
- International journal of information management. 11(1991) no.1, S.5-13
- Type
- a
-
Ellis, D.: Is the manual creation of hypertext worth the effort? (1995)
0.00
0.0016353898 = product of:
0.008994644 = sum of:
0.0055226083 = weight(_text_:a in 4888) [ClassicSimilarity], result of:
0.0055226083 = score(doc=4888,freq=4.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.18016359 = fieldWeight in 4888, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.078125 = fieldNorm(doc=4888)
0.0034720355 = weight(_text_:s in 4888) [ClassicSimilarity], result of:
0.0034720355 = score(doc=4888,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.120123915 = fieldWeight in 4888, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=4888)
0.18181819 = coord(2/11)
- Abstract
- Offers a definition of hypertext. Describes the range of uses to which hypertext systems may be put with particular attention to library and information service organisations. Discusses the evaluation of hypertext systems and experimental methodology
- Source
- IATUL proceedings (new series). 4(1995) no.4, S.122-138
- Type
- a
-
Ellis, D.; Furner, J.; Willett, P.: On the creation of hypertext links in full-text documents : measurement of retrieval effectiveness (1996)
0.00
0.0015956345 = product of:
0.0087759895 = sum of:
0.0070399716 = weight(_text_:a in 4214) [ClassicSimilarity], result of:
0.0070399716 = score(doc=4214,freq=26.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.22966442 = fieldWeight in 4214, product of:
5.0990195 = tf(freq=26.0), with freq of:
26.0 = termFreq=26.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=4214)
0.0017360178 = weight(_text_:s in 4214) [ClassicSimilarity], result of:
0.0017360178 = score(doc=4214,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.060061958 = fieldWeight in 4214, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=4214)
0.18181819 = coord(2/11)
- Abstract
- An important stage in the process or retrieval of objects from a hypertext database is the creation of a set of internodal links that are intended to represent the relationships existing between objects; this operation is often undertaken manually, just as index terms are often manually assigned to documents in a conventional retrieval system. In an earlier article (1994), the results were published of a study in which several different sets of links were inserted, each by a different person, between the paragraphs of each of a number of full-text documents. These results showed little similarity between the link-sets, a finding that was comparable with those of studies of inter-indexer consistency, which suggest that there is generally only a low level of agreement between the sets of index terms assigned to a document by different indexers. In this article, a description is provided of an investigation into the nature of the relationship existing between (i) the levels of inter-linker consistency obtaining among the group of hypertext databases used in our earlier experiments, and (ii) the levels of effectiveness of a number of searches carried out in those databases. An account is given of the implementation of the searches and of the methods used in the calculation of numerical values expressing their effectiveness. Analysis of the results of a comparison between recorded levels of consistency and those of effectiveness does not allow us to draw conclusions about the consistency - effectiveness relationship that are equivalent to those drawn in comparable studies of inter-indexer consistency
- Source
- Journal of the American Society for Information Science. 47(1996) no.4, S.287-300
- Type
- a
-
Spink, A.; Wilson, T.D.; Ford, N.; Foster, A.; Ellis, D.: Information seeking and mediated searching : Part 1: theoretical framework and research design (2002)
0.00
0.0015837002 = product of:
0.008710351 = sum of:
0.0066271294 = weight(_text_:a in 5240) [ClassicSimilarity], result of:
0.0066271294 = score(doc=5240,freq=16.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.2161963 = fieldWeight in 5240, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=5240)
0.0020832212 = weight(_text_:s in 5240) [ClassicSimilarity], result of:
0.0020832212 = score(doc=5240,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.072074346 = fieldWeight in 5240, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=5240)
0.18181819 = coord(2/11)
- Abstract
- In this issue we begin with the first of four parts of a five part series of papers by Spink, Wilson, Ford, Foster, and Ellis. Spink, et alia, in the first section of this report set forth the design of a project to test whether existing models of the information search process are appropriate for an environment of mediated successive searching which they believe characterizes much information seeking behavior. Their goal is to develop an integrated model of the process. Data were collected from 198 individuals, 87 in Texas and 111 in Sheffield in the U.K., with individuals with real information needs engaged in interaction with operational information retrieval systems by use of transaction logs, recordings of interactions with intermediaries, pre, and post search interviews, questionnaire responses, relevance judgments of retrieved text, and responses to a test of cognitive styles. Questionnaires were based upon the Kuhlthau model, the Saracevic model, the Ellis model, and incorporated a visual analog scale to avoid a consistency bias.
- Source
- Journal of the American Society for Information Science and Technology. 53(2002) no.9, S.695-703
- Type
- a
-
Spink, A.; Wilson, T.D.; Ford, N.; Foster, A.; Ellis, D.: Information seeking and mediated searching : Part 3: successive searching (2002)
0.00
0.001545419 = product of:
0.008499804 = sum of:
0.0067637865 = weight(_text_:a in 5242) [ClassicSimilarity], result of:
0.0067637865 = score(doc=5242,freq=24.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.22065444 = fieldWeight in 5242, product of:
4.8989797 = tf(freq=24.0), with freq of:
24.0 = termFreq=24.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=5242)
0.0017360178 = weight(_text_:s in 5242) [ClassicSimilarity], result of:
0.0017360178 = score(doc=5242,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.060061958 = fieldWeight in 5242, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=5242)
0.18181819 = coord(2/11)
- Abstract
- In "Part 3. Successive Searching.'' where Spink is the primary author, after a review of the work on successive searching, a portion of the Texas generated data is reviewed for insights on how frequently successive searching occurred, the motivation for its occurrence, and any distinctive characteristics of the successive search pattern. Of 18 mediated searches, half requested a second search and a quarter a third search. All but one seeker reported a need to refine and enhance the previous results. Second searches while characterized as refinements included a significantly higher number of items retrieved and more search cycles. Third searches had the most cycles but less retrieved items than the second. Number of terms utilized did not change significantly and overlap was limited to about one in five terms between first and second searches. No overlap occurred between the second and third searches. Problem solving stage shifts did occur with 2 moving to a later stage after the first search, 5 remaining in the same stage and one reverting to a previous stage. Precision did not increase over successive searches, but partial relevant judgments decreased between the second and third search.
- Source
- Journal of the American Society for Information Science and Technology. 53(2002) no.9, S.716-727
- Type
- a
-
Wilson, T.D.; Ford, N.; Ellis, D.; Foster, A.; Spink, A.: Information seeking and mediated searching : Part 2: uncertainty and Its correlates (2002)
0.00
0.0015058789 = product of:
0.008282334 = sum of:
0.0061991126 = weight(_text_:a in 5232) [ClassicSimilarity], result of:
0.0061991126 = score(doc=5232,freq=14.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.20223314 = fieldWeight in 5232, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=5232)
0.0020832212 = weight(_text_:s in 5232) [ClassicSimilarity], result of:
0.0020832212 = score(doc=5232,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.072074346 = fieldWeight in 5232, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=5232)
0.18181819 = coord(2/11)
- Abstract
- In "Part 2. Uncertainty and Its Correlates,'' where Wilson is the primary author, after a review of uncertainty as a concept in information seeking and decision research, it is hypothesized that if the Kuhlthau problem solving stage model is appropriate the searchers will recognize the stage in which they currently are operating. Secondly to test Wilson's contention that operationalized uncertainty would be useful in characterizing users, it is hypothesized that uncertainty will decrease as the searcher proceeds through problem stages and after the completion of the search. A review of pre and post search interviews reveals that uncertainty can be operationalized, and that academic researchers have no difficulty with a stage model of the information seeking process. Uncertainty is unrelated to sex, age, or discipline, but is related to problem stage and domain knowledge. Both concepts appear robust.
- Source
- Journal of the American Society for Information Science and Technology. 53(2002) no.9, S.704-715
- Type
- a
-
Ellis, D.; Furner-Hines, J.; Willett, P.: On the creation of hypertext links in full-text documents : measurement of inter-linker consistency (1994)
0.00
0.0014930638 = product of:
0.00821185 = sum of:
0.0064758323 = weight(_text_:a in 7493) [ClassicSimilarity], result of:
0.0064758323 = score(doc=7493,freq=22.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.21126054 = fieldWeight in 7493, product of:
4.690416 = tf(freq=22.0), with freq of:
22.0 = termFreq=22.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=7493)
0.0017360178 = weight(_text_:s in 7493) [ClassicSimilarity], result of:
0.0017360178 = score(doc=7493,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.060061958 = fieldWeight in 7493, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=7493)
0.18181819 = coord(2/11)
- Abstract
- In important stage in the process of retrieval of objects from a hypertext database is the creation of a set of inter-nodal links that are intended to represent the relationships existing between objects; this operation is often undertaken manually, just as index terms are often manually assigned to documents in a conventional retrieval system. Studies of conventional systems have suggested that a degree of consistency in the terms assigned to documents by indexers is positively associated with retrieval effectiveness. It is thus of interest to investigate the consistency of assignment of links in separate hypertext versions of the same full-text document, since a measure of agreement may be related to the subsequent utility of the resulting hypertext databases. The calculation of values indicating the degree of similarity between objects is a technique that has been widely used in the fields of textual and chemical information retrieval; in this paper we describe the application of arithmetic coefficients and topological indices to the measurement of the degree of similarity between the sets of inter-nodal links in hypertext databases. We publish the results of a study in which several different of links are inserted, by different people, between the paragraphs of each of a number of full-text documents. Our results show little similary between the sets of links identified by different people; this finding is comparable with those of studies of inter-indexer consistency, where it has been found that there is generally only a low level of agreement between the sets of idenx terms assigned to a document by different indexers
- Source
- Journal of documentation. 50(1994) no.2, S.67-98
- Type
- a
-
Ellis, D.; Vasconcelos, A.: Ranganathan and the Net : using facet analysis to search and organise the World Wide Web (1999)
0.00
0.0014222699 = product of:
0.007822484 = sum of:
0.0057392623 = weight(_text_:a in 726) [ClassicSimilarity], result of:
0.0057392623 = score(doc=726,freq=12.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.18723148 = fieldWeight in 726, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=726)
0.0020832212 = weight(_text_:s in 726) [ClassicSimilarity], result of:
0.0020832212 = score(doc=726,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.072074346 = fieldWeight in 726, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=726)
0.18181819 = coord(2/11)
- Abstract
- This paper documents the continuing relevance of facet analysis as a technique for searching and organising WWW based materials. The 2 approaches underlying WWW searching and indexing - word and concept based indexing - are outlined. It is argued that facet analysis as an a posteriori approach to classification using words from the subject field as the concept terms in the classification derived represents an excellent approach to searching and organising the results of WWW searches using either search engines or search directories. Finally it is argued that the underlying philosophy of facet analysis is better suited to the disparate nature of WWW resources and searchers than the assumptions of contemporaray IR research.
This article gives a cheerfully brief and undetailed account of how to make a faceted classification system, then describes information retrieval and searching on the web. It concludes by saying that facets would be excellent in helping users search and browse the web, but offers no real clues as to how this can be done.
- Source
- Aslib proceedings. 51(1999) no.1, S.3-10
- Type
- a
-
Ellis, D.; Wilson, T.; Allen, D.: Information science and information systems : conjunct subjects - disjunct disciplines (1999)
0.00
0.0013412925 = product of:
0.0073771086 = sum of:
0.0039050733 = weight(_text_:a in 4345) [ClassicSimilarity], result of:
0.0039050733 = score(doc=4345,freq=2.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.12739488 = fieldWeight in 4345, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.078125 = fieldNorm(doc=4345)
0.0034720355 = weight(_text_:s in 4345) [ClassicSimilarity], result of:
0.0034720355 = score(doc=4345,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.120123915 = fieldWeight in 4345, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=4345)
0.18181819 = coord(2/11)
- Source
- Journal of the American Society for Information Science. 50(1999) no.12, S.1095-1107
- Type
- a
-
Ellis, D.; Vasconcelos, A.: ¬The relevance of facet analysis for World Wide Web subject organization and searching (2000)
0.00
0.0013313505 = product of:
0.007322428 = sum of:
0.0052392064 = weight(_text_:a in 2477) [ClassicSimilarity], result of:
0.0052392064 = score(doc=2477,freq=10.0), product of:
0.030653298 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.026584605 = queryNorm
0.1709182 = fieldWeight in 2477, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=2477)
0.0020832212 = weight(_text_:s in 2477) [ClassicSimilarity], result of:
0.0020832212 = score(doc=2477,freq=2.0), product of:
0.028903782 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.026584605 = queryNorm
0.072074346 = fieldWeight in 2477, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=2477)
0.18181819 = coord(2/11)
- Abstract
- Different forms of indexing and search facilities available on the Web are described. Use of facet analysis to structure hypertext concept structures is outlined in relation to work on (1) development of hypertext knowledge bases for designers of learning materials and (2) construction of knowledge based hypertext interfaces. The problem of lack of closeness between page designers and potential users is examined. Facet analysis is suggested as a way of alleviating some difficulties associated with this problem of designing for the unknown user.
This is a revised version of the earlier article by Ellis and Vasconcelos (1999) (see Not Relevant, below), though that is not indicated, and much of it is identical, word for word. There is a new section covering the work of Elizabeth Duncan, which is useful and informative, but the reader is better advised to go to the originals if available.
- Source
- Journal of Internet cataloging. 2(2000) nos.3/4, S.97-114
- Type
- a
