-
Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000)
0.05
0.049104135 = product of:
0.0736562 = sum of:
0.024637345 = weight(_text_:information in 6438) [ClassicSimilarity], result of:
0.024637345 = score(doc=6438,freq=2.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.27153665 = fieldWeight in 6438, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.109375 = fieldNorm(doc=6438)
0.049018852 = product of:
0.098037705 = sum of:
0.098037705 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
0.098037705 = score(doc=6438,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.5416616 = fieldWeight in 6438, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=6438)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Date
- 11. 8.2001 16:22:19
- Source
- Information processing and management. 36(2000) no.1, S.3-36
-
Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990)
0.05
0.049104135 = product of:
0.0736562 = sum of:
0.024637345 = weight(_text_:information in 5089) [ClassicSimilarity], result of:
0.024637345 = score(doc=5089,freq=2.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.27153665 = fieldWeight in 5089, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.109375 = fieldNorm(doc=5089)
0.049018852 = product of:
0.098037705 = sum of:
0.098037705 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
0.098037705 = score(doc=5089,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.5416616 = fieldWeight in 5089, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=5089)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Date
- 22. 7.2006 18:43:54
- Source
- Journal of the American Society for Information Science. 41(1990) no.4, S.272-281
-
Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998)
0.05
0.04770173 = product of:
0.1431052 = sum of:
0.1431052 = sum of:
0.087083645 = weight(_text_:services in 3572) [ClassicSimilarity], result of:
0.087083645 = score(doc=3572,freq=4.0), product of:
0.18975723 = queryWeight, product of:
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.05168566 = queryNorm
0.45892134 = fieldWeight in 3572, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.0625 = fieldNorm(doc=3572)
0.05602155 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
0.05602155 = score(doc=3572,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.30952093 = fieldWeight in 3572, 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=3572)
0.33333334 = coord(1/3)
- Abstract
- Describes of 3 searches on the topic of virtual communities done on the WWW using HotBot and traditional databases using LEXIS-NEXIS and ABI/Inform. Concludes that the WWW is a good starting place for a broad concept search but the traditional services are better for more precise topics
- Source
- Online. 22(1998) no.3, S.24-26,28
-
Ellis, D.: Progress and problems in information retrieval (1996)
0.05
0.046830814 = product of:
0.07024622 = sum of:
0.042235445 = weight(_text_:information in 789) [ClassicSimilarity], result of:
0.042235445 = score(doc=789,freq=18.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.46549135 = fieldWeight in 789, product of:
4.2426405 = tf(freq=18.0), with freq of:
18.0 = termFreq=18.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=789)
0.028010774 = product of:
0.05602155 = sum of:
0.05602155 = weight(_text_:22 in 789) [ClassicSimilarity], result of:
0.05602155 = score(doc=789,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = 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)
0.6666667 = coord(2/3)
- Abstract
- An introduction to the principal generic approaches to information retrieval research with their associated concepts, models and systems, this text is designed to keep the information professional up to date with the major themes and developments that have preoccupied researchers in recent month in relation to textual and documentary retrieval systems.
- COMPASS
- Information retrieval
- Content
- First published 1991 as New horizons in information retrieval
- 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)
- LCSH
- Information retrieval
- Subject
- Information retrieval
Information retrieval
-
Salton, G.: Thoughts about modern retrieval technologies (1988)
0.05
0.0455157 = product of:
0.06827355 = sum of:
0.03017446 = weight(_text_:information in 1522) [ClassicSimilarity], result of:
0.03017446 = score(doc=1522,freq=12.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.3325631 = fieldWeight in 1522, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=1522)
0.03809909 = product of:
0.07619818 = sum of:
0.07619818 = weight(_text_:services in 1522) [ClassicSimilarity], result of:
0.07619818 = score(doc=1522,freq=4.0), product of:
0.18975723 = queryWeight, product of:
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.05168566 = queryNorm
0.40155616 = fieldWeight in 1522, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.0546875 = fieldNorm(doc=1522)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Paper presented at the 30th Annual Conference of the National Federation of Astracting and Information Services, Philadelphia, 28 Feb-2 Mar 88. In recent years, the amount and the variety of available machine-readable data, new technologies have been introduced, such as high density storage devices, and fancy graphic displays useful for information transformation and access. New approaches have also been considered for processing the stored data based on the construction of knowledge bases representing the contents and structure of the information, and the use of expert system techniques to control the user-system interactions. Provides a brief evaluation of the new information processing technologies, and of the software methods proposed for information manipulation.
- Source
- Information services and use. 8(1988) no.2/3/4, S.107-113
-
Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983)
0.04
0.043662854 = product of:
0.06549428 = sum of:
0.030480811 = weight(_text_:information in 2417) [ClassicSimilarity], result of:
0.030480811 = score(doc=2417,freq=6.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.3359395 = fieldWeight in 2417, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=2417)
0.035013467 = product of:
0.070026934 = sum of:
0.070026934 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
0.070026934 = score(doc=2417,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.38690117 = fieldWeight in 2417, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=2417)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Pages
- S.22-25
- Series
- Proceedings of the American Society for Information Science; vol. 20
- Source
- Productivity in the information age : proceedings of the 46th ASIS annual meeting, 1983. Ed.: Raymond F Vondra
-
King, D.W.; Bryant, E.C.: ¬The evaluation of information services and products (1971)
0.04
0.042248916 = product of:
0.06337337 = sum of:
0.024887474 = weight(_text_:information in 4157) [ClassicSimilarity], result of:
0.024887474 = score(doc=4157,freq=4.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.27429342 = fieldWeight in 4157, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=4157)
0.038485896 = product of:
0.07697179 = sum of:
0.07697179 = weight(_text_:services in 4157) [ClassicSimilarity], result of:
0.07697179 = score(doc=4157,freq=2.0), product of:
0.18975723 = queryWeight, product of:
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.05168566 = queryNorm
0.405633 = fieldWeight in 4157, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.078125 = fieldNorm(doc=4157)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Imprint
- Washington : Information resources press
-
¬The Eleventh Text Retrieval Conference, TREC 2002 (2003)
0.03
0.03493028 = product of:
0.052395422 = sum of:
0.024384648 = weight(_text_:information in 4049) [ClassicSimilarity], result of:
0.024384648 = score(doc=4049,freq=6.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.2687516 = fieldWeight in 4049, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=4049)
0.028010774 = product of:
0.05602155 = sum of:
0.05602155 = weight(_text_:22 in 4049) [ClassicSimilarity], result of:
0.05602155 = score(doc=4049,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.30952093 = fieldWeight in 4049, 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=4049)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Proceedings of the llth TREC-conference held in Gaithersburg, Maryland (USA), November 19-22, 2002. Aim of the conference was discussion an retrieval and related information-seeking tasks for large test collection. 93 research groups used different techniques, for information retrieval from the same large database. This procedure makes it possible to compare the results. The tasks are: Cross-language searching, filtering, interactive searching, searching for novelty, question answering, searching for video shots, and Web searching.
- Imprint
- Gaithersburg, MD : National Institute of Standards / Information Technology Laboratory
-
Schultz Jr., W.N.; Braddy, L.: ¬A librarian-centered study of perceptions of subject terms and controlled vocabulary (2017)
0.03
0.033611845 = product of:
0.050417766 = sum of:
0.012318673 = weight(_text_:information in 5156) [ClassicSimilarity], result of:
0.012318673 = score(doc=5156,freq=2.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.13576832 = fieldWeight in 5156, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=5156)
0.03809909 = product of:
0.07619818 = sum of:
0.07619818 = weight(_text_:services in 5156) [ClassicSimilarity], result of:
0.07619818 = score(doc=5156,freq=4.0), product of:
0.18975723 = queryWeight, product of:
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.05168566 = queryNorm
0.40155616 = fieldWeight in 5156, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.0546875 = fieldNorm(doc=5156)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Controlled vocabulary and subject headings in OPAC records have proven to be useful in improving search results. The authors used a survey to gather information about librarian opinions and professional use of controlled vocabulary. Data from a range of backgrounds and expertise were examined, including academic and public libraries, and technical services as well as public services professionals. Responses overall demonstrated positive opinions of the value of controlled vocabulary, including in reference interactions as well as during bibliographic instruction sessions. Results are also examined based upon factors such as age and type of librarian.
-
Smithson, S.: Information retrieval evaluation in practice : a case study approach (1994)
0.03
0.032764517 = product of:
0.04914677 = sum of:
0.024637345 = weight(_text_:information in 7302) [ClassicSimilarity], result of:
0.024637345 = score(doc=7302,freq=8.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.27153665 = fieldWeight in 7302, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=7302)
0.024509426 = product of:
0.049018852 = sum of:
0.049018852 = weight(_text_:22 in 7302) [ClassicSimilarity], result of:
0.049018852 = score(doc=7302,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.2708308 = fieldWeight in 7302, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=7302)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- The evaluation of information retrieval systems is an important yet difficult operation. This paper describes an exploratory evaluation study that takes an interpretive approach to evaluation. The longitudinal study examines evaluation through the information-seeking behaviour of 22 case studies of 'real' users. The eclectic approach to data collection produced behavioral data that is compared with relevance judgements and satisfaction ratings. The study demonstrates considerable variations among the cases, among different evaluation measures within the same case, and among the same measures at different stages within a single case. It is argued that those involved in evaluation should be aware of the difficulties, and base any evaluation on a good understanding of the cases in question
- Source
- Information processing and management. 30(1994) no.2, S.205-221
-
Armstrong, C.J.; Medawar, K.: Investigation into the quality of databases in general use in the UK (1996)
0.03
0.032184467 = product of:
0.048276696 = sum of:
0.021336567 = weight(_text_:information in 6768) [ClassicSimilarity], result of:
0.021336567 = score(doc=6768,freq=6.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.23515764 = fieldWeight in 6768, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=6768)
0.02694013 = product of:
0.05388026 = sum of:
0.05388026 = weight(_text_:services in 6768) [ClassicSimilarity], result of:
0.05388026 = score(doc=6768,freq=2.0), product of:
0.18975723 = queryWeight, product of:
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.05168566 = queryNorm
0.28394312 = fieldWeight in 6768, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.0546875 = fieldNorm(doc=6768)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Reports on a Centre for Information Quality Management (CIQM) BLRRD funded project which investigated the quality of databases in general use in the UK. Gives a literature review of quality in library and information services. Reports the results of a CIQM questionnaire survey on the quality problems of databases and their affect on users. Carries out databases evaluations of: INSPEC on ESA-IRS, INSPEC on KR Data-Star, INSPEC on UMI CD-ROM, BNB on CD-ROM, and Information Science Abstracts Plus CD-ROM. Sets out a methodology for evaluation of bibliographic databases
-
Sanderson, M.: ¬The Reuters test collection (1996)
0.03
0.031947173 = product of:
0.047920756 = sum of:
0.01990998 = weight(_text_:information in 6971) [ClassicSimilarity], result of:
0.01990998 = score(doc=6971,freq=4.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.21943474 = fieldWeight in 6971, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=6971)
0.028010774 = product of:
0.05602155 = sum of:
0.05602155 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
0.05602155 = score(doc=6971,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.30952093 = fieldWeight in 6971, 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=6971)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997)
0.03
0.031947173 = product of:
0.047920756 = sum of:
0.01990998 = weight(_text_:information in 744) [ClassicSimilarity], result of:
0.01990998 = score(doc=744,freq=4.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.21943474 = fieldWeight in 744, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=744)
0.028010774 = product of:
0.05602155 = sum of:
0.05602155 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
0.05602155 = score(doc=744,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.30952093 = fieldWeight in 744, 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=744)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- TREC ia an annual conference held in the USA devoted to electronic systems for large full text information searching. The conference deals with evaluation and comparison techniques developed since 1992 by participants from the research and industrial fields. The work of the conference is destined for designers (rather than users) of systems which access full text information. Describes the context, objectives, organization, evaluation methods and limits of TREC
- Date
- 1. 8.1996 22:01:00
-
¬The Fifth Text Retrieval Conference (TREC-5) (1997)
0.03
0.031947173 = product of:
0.047920756 = sum of:
0.01990998 = weight(_text_:information in 3087) [ClassicSimilarity], result of:
0.01990998 = score(doc=3087,freq=4.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.21943474 = fieldWeight in 3087, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0625 = fieldNorm(doc=3087)
0.028010774 = product of:
0.05602155 = sum of:
0.05602155 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
0.05602155 = score(doc=3087,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.30952093 = fieldWeight in 3087, 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=3087)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Proceedings of the 5th TREC-confrerence held in Gaithersburgh, Maryland, Nov 20-22, 1996. Aim of the conference was discussion on retrieval techniques for large test collections. Different research groups used different techniques, such as automated thesauri, term weighting, natural language techniques, relevance feedback and advanced pattern matching, for information retrieval from the same large database. This procedure makes it possible to compare the results. The proceedings include papers, tables of the system results, and brief system descriptions including timing and storage information
-
MacCall, S.L.; Cleveland, A.D.; Gibson, I.E.: Outline and preliminary evaluation of the classical digital library model (1999)
0.03
0.031378664 = product of:
0.047067992 = sum of:
0.027825044 = weight(_text_:information in 6541) [ClassicSimilarity], result of:
0.027825044 = score(doc=6541,freq=20.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.30666938 = fieldWeight in 6541, product of:
4.472136 = tf(freq=20.0), with freq of:
20.0 = termFreq=20.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=6541)
0.019242948 = product of:
0.038485896 = sum of:
0.038485896 = weight(_text_:services in 6541) [ClassicSimilarity], result of:
0.038485896 = score(doc=6541,freq=2.0), product of:
0.18975723 = queryWeight, product of:
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.05168566 = queryNorm
0.2028165 = fieldWeight in 6541, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.0390625 = fieldNorm(doc=6541)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- The growing number of networked information resources and services offers unprecedented opportunities for delivering high quality information to the computer desktop of a wide range of individuals. However, currently there is a reliance on a database retrieval model, in which endusers use keywords to search large collections of automatically indexed resources in order to find needed information. As an alternative to the database retrieval model, this paper outlines the classical digital library model, which is derived from traditional practices of library and information science professionals. These practices include the selection and organization of information resources for local populations of users and the integration of advanced information retrieval tools, such as databases and the Internet into these collections. To evaluate this model, library and information professionals and endusers involved with primary care medicine were asked to respond to a series of questions comparing their experiences with a digital library developed for the primary care population to their experiences with general Internet use. Preliminary results are reported
- Imprint
- Medford, NJ : Information Today
- Series
- Proceedings of the American Society for Information Science; vol.36
- Source
- Knowledge: creation, organization and use. Proceedings of the 62nd Annual Meeting of the American Society for Information Science, 31.10.-4.11.1999. Ed.: L. Woods
-
Losee, R.M.: Determining information retrieval and filtering performance without experimentation (1995)
0.03
0.030563995 = product of:
0.045845993 = sum of:
0.021336567 = weight(_text_:information in 3368) [ClassicSimilarity], result of:
0.021336567 = score(doc=3368,freq=6.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.23515764 = fieldWeight in 3368, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=3368)
0.024509426 = product of:
0.049018852 = sum of:
0.049018852 = weight(_text_:22 in 3368) [ClassicSimilarity], result of:
0.049018852 = score(doc=3368,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.2708308 = fieldWeight in 3368, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=3368)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- The performance of an information retrieval or text and media filtering system may be determined through analytic methods as well as by traditional simulation or experimental methods. These analytic methods can provide precise statements about expected performance. They can thus determine which of 2 similarly performing systems is superior. For both a single query terms and for a multiple query term retrieval model, a model for comparing the performance of different probabilistic retrieval methods is developed. This method may be used in computing the average search length for a query, given only knowledge of database parameter values. Describes predictive models for inverse document frequency, binary independence, and relevance feedback based retrieval and filtering. Simulation illustrate how the single term model performs and sample performance predictions are given for single term and multiple term problems
- Date
- 22. 2.1996 13:14:10
- Source
- Information processing and management. 31(1995) no.4, S.555-572
-
Belkin, N.J.: ¬An overview of results from Rutgers' investigations of interactive information retrieval (1998)
0.03
0.030221185 = product of:
0.045331776 = sum of:
0.027825044 = weight(_text_:information in 2339) [ClassicSimilarity], result of:
0.027825044 = score(doc=2339,freq=20.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.30666938 = fieldWeight in 2339, product of:
4.472136 = tf(freq=20.0), with freq of:
20.0 = termFreq=20.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=2339)
0.017506734 = product of:
0.035013467 = sum of:
0.035013467 = weight(_text_:22 in 2339) [ClassicSimilarity], result of:
0.035013467 = score(doc=2339,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.19345059 = fieldWeight in 2339, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2339)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Over the last 4 years, the Information Interaction Laboratory at Rutgers' School of communication, Information and Library Studies has performed a series of investigations concerned with various aspects of people's interactions with advanced information retrieval (IR) systems. We have benn especially concerned with understanding not just what people do, and why, and with what effect, but also with what they would like to do, and how they attempt to accomplish it, and with what difficulties. These investigations have led to some quite interesting conclusions about the nature and structure of people's interactions with information, about support for cooperative human-computer interaction in query reformulation, and about the value of visualization of search results for supporting various forms of interaction with information. In this discussion, I give an overview of the research program and its projects, present representative results from the projects, and discuss some implications of these results for support of subject searching in information retrieval systems
- Date
- 22. 9.1997 19:16:05
- Imprint
- Urbana-Champaign, IL : Illinois University at Urbana-Champaign, Graduate School of Library and Information Science
- Source
- Visualizing subject access for 21st century information resources: Papers presented at the 1997 Clinic on Library Applications of Data Processing, 2-4 Mar 1997, Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign. Ed.: P.A. Cochrane et al
-
Crestani, F.; Rijsbergen, C.J. van: Information retrieval by imaging (1996)
0.03
0.029745609 = product of:
0.044618413 = sum of:
0.023610333 = weight(_text_:information in 6967) [ClassicSimilarity], result of:
0.023610333 = score(doc=6967,freq=10.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.2602176 = fieldWeight in 6967, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=6967)
0.02100808 = product of:
0.04201616 = sum of:
0.04201616 = weight(_text_:22 in 6967) [ClassicSimilarity], result of:
0.04201616 = score(doc=6967,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.23214069 = fieldWeight in 6967, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=6967)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Explains briefly what constitutes the imaging process and explains how imaging can be used in information retrieval. Proposes an approach based on the concept of: 'a term is a possible world'; which enables the exploitation of term to term relationships which are estimated using an information theoretic measure. Reports results of an evaluation exercise to compare the performance of imaging retrieval, using possible world semantics, with a benchmark and using the Cranfield 2 document collection to measure precision and recall. Initially, the performance imaging retrieval was seen to be better but statistical analysis proved that the difference was not significant. The problem with imaging retrieval lies in the amount of computations needed to be performed at run time and a later experiement investigated the possibility of reducing this amount. Notes lines of further investigation
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
MacFarlane, A.: Evaluation of web search for the information practitioner (2007)
0.03
0.029472841 = product of:
0.04420926 = sum of:
0.021117723 = weight(_text_:information in 817) [ClassicSimilarity], result of:
0.021117723 = score(doc=817,freq=8.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.23274569 = fieldWeight in 817, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=817)
0.023091538 = product of:
0.046183076 = sum of:
0.046183076 = weight(_text_:services in 817) [ClassicSimilarity], result of:
0.046183076 = score(doc=817,freq=2.0), product of:
0.18975723 = queryWeight, product of:
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.05168566 = queryNorm
0.2433798 = fieldWeight in 817, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.6713707 = idf(docFreq=3057, maxDocs=44218)
0.046875 = fieldNorm(doc=817)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Purpose - The aim of the paper is to put forward a structured mechanism for web search evaluation. The paper seeks to point to useful scientific research and show how information practitioners can use these methods in evaluation of search on the web for their users. Design/methodology/approach - The paper puts forward an approach which utilizes traditional laboratory-based evaluation measures such as average precision/precision at N documents, augmented with diagnostic measures such as link broken, etc., which are used to show why precision measures are depressed as well as the quality of the search engines crawling mechanism. Findings - The paper shows how to use diagnostic measures in conjunction with precision in order to evaluate web search. Practical implications - The methodology presented in this paper will be useful to any information professional who regularly uses web search as part of their information seeking and needs to evaluate web search services. Originality/value - The paper argues that the use of diagnostic measures is essential in web search, as precision measures on their own do not allow a searcher to understand why search results differ between search engines.
-
Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989)
0.03
0.028083868 = product of:
0.042125802 = sum of:
0.021117723 = weight(_text_:information in 3564) [ClassicSimilarity], result of:
0.021117723 = score(doc=3564,freq=8.0), product of:
0.09073304 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.05168566 = queryNorm
0.23274569 = fieldWeight in 3564, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=3564)
0.02100808 = product of:
0.04201616 = sum of:
0.04201616 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
0.04201616 = score(doc=3564,freq=2.0), product of:
0.18099438 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.05168566 = queryNorm
0.23214069 = fieldWeight in 3564, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046875 = fieldNorm(doc=3564)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Searches conducted as part of the MEDLINE/Full-Text Research Project revealed that the full-text data bases of clinical medical journal articles (CCML (Comprehensive Core Medical Library) from BRS Information Technologies, and MEDIS from Mead Data Central) did not retrieve all the relevant citations. An analysis of the data indicated that 204 relevant citations were retrieved only by MEDLINE. A comparison of the strategies used on the full-text data bases with the text of the articles of these 204 citations revealed that 2 reasons contributed to these failure. The searcher often constructed a restrictive strategy which resulted in the loss of relevant documents; and as in other kinds of retrieval, the problems of natural language caused the loss of relevant documents.
- Date
- 9. 1.1996 10:22:31
- Imprint
- Medford, New Jersey : Learned Information
- Source
- ASIS'89. Managing information and technology. Proceedings of the 52nd annual meeting of the American Society for Information Science, Washington D.C., 30.10.-2.11.1989. Vol.26. Ed.by J. Katzer and G.B. Newby
