-
Shiri, A.A.; Revie, C.; Chowdhury, G.: Thesaurus-enhanced search interfaces (2002)
0.10
0.102634095 = product of:
0.15395114 = sum of:
0.054054987 = weight(_text_:im in 3807) [ClassicSimilarity], result of:
0.054054987 = score(doc=3807,freq=2.0), product of:
0.1442303 = queryWeight, product of:
2.8267863 = idf(docFreq=7115, maxDocs=44218)
0.051022716 = queryNorm
0.37478244 = fieldWeight in 3807, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.8267863 = idf(docFreq=7115, maxDocs=44218)
0.09375 = fieldNorm(doc=3807)
0.09989615 = product of:
0.14984421 = sum of:
0.062307306 = weight(_text_:online in 3807) [ClassicSimilarity], result of:
0.062307306 = score(doc=3807,freq=2.0), product of:
0.1548489 = queryWeight, product of:
3.0349014 = idf(docFreq=5778, maxDocs=44218)
0.051022716 = queryNorm
0.40237486 = fieldWeight in 3807, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0349014 = idf(docFreq=5778, maxDocs=44218)
0.09375 = fieldNorm(doc=3807)
0.08753691 = weight(_text_:retrieval in 3807) [ClassicSimilarity], result of:
0.08753691 = score(doc=3807,freq=4.0), product of:
0.15433937 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.051022716 = queryNorm
0.5671716 = fieldWeight in 3807, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=3807)
0.6666667 = coord(2/3)
0.6666667 = coord(2/3)
- Theme
- Verbale Doksprachen im Online-Retrieval
Semantisches Umfeld in Indexierung u. Retrieval
-
Schmitz-Esser, W.: EXPO-INFO 2000 : Visuelles Besucherinformationssystem für Weltausstellungen (2000)
0.03
0.026966095 = product of:
0.040449142 = sum of:
0.031852208 = weight(_text_:im in 1404) [ClassicSimilarity], result of:
0.031852208 = score(doc=1404,freq=4.0), product of:
0.1442303 = queryWeight, product of:
2.8267863 = idf(docFreq=7115, maxDocs=44218)
0.051022716 = queryNorm
0.22084267 = fieldWeight in 1404, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.8267863 = idf(docFreq=7115, maxDocs=44218)
0.0390625 = fieldNorm(doc=1404)
0.008596936 = product of:
0.025790809 = sum of:
0.025790809 = weight(_text_:retrieval in 1404) [ClassicSimilarity], result of:
0.025790809 = score(doc=1404,freq=2.0), product of:
0.15433937 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.051022716 = queryNorm
0.16710453 = fieldWeight in 1404, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=1404)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Abstract
- Das aktuelle Wissen der Welt im Spiegel einer Weltausstellung: Wie stellt man das dar und wie macht man es Interessierten zugänglich - in der Ausstellung, in Publikationen, im Funk und über das Internet? Was man alles auf einer Weltausstellung an der Schwelle zum dritten Jahrtausend sehen und erfahren kann, sprengt in Fülle und Vielfalt jeden individuell faßbaren Rahmen. Schmitz-Esser zeigt in seinem Buch, wie der Besucher wahlweise in vier Sprachen die Weltausstellung erleben und die Quintessenz davon mitnehmen kann. Ermöglicht wird dies durch das Konzept des virtuellen "Wissens in der Kapsel", das so aufbereitet ist, daß es in allen gängigen medialen Formen und für unterschiedlichste Wege der Aneignung eingesetzt werden kann. Die Lösung ist nicht nur eine Sache der Informatik und Informationstechnologie, sondern vielmehr auch eine Herausforderung an Informationswissenschaft und Computerlinguistik. Das Buch stellt Ziel, Ansatz, Komponenten und Voraussetzungen dafür dar.
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Tudhope, D.; Alani, H.; Jones, C.: Augmenting thesaurus relationships : possibilities for retrieval (2001)
0.02
0.018584752 = product of:
0.055754256 = sum of:
0.055754256 = product of:
0.08363138 = sum of:
0.025961377 = weight(_text_:online in 1520) [ClassicSimilarity], result of:
0.025961377 = score(doc=1520,freq=2.0), product of:
0.1548489 = queryWeight, product of:
3.0349014 = idf(docFreq=5778, maxDocs=44218)
0.051022716 = queryNorm
0.16765618 = fieldWeight in 1520, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0349014 = idf(docFreq=5778, maxDocs=44218)
0.0390625 = fieldNorm(doc=1520)
0.05767 = weight(_text_:retrieval in 1520) [ClassicSimilarity], result of:
0.05767 = score(doc=1520,freq=10.0), product of:
0.15433937 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.051022716 = queryNorm
0.37365708 = fieldWeight in 1520, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=1520)
0.6666667 = coord(2/3)
0.33333334 = coord(1/3)
- Abstract
- This paper discusses issues concerning the augmentation of thesaurus relationships, in light of new application possibilities for retrieval. We first discuss a case study that explored the retrieval potential of an augmented set of thesaurus relationships by specialising standard relationships into richer subtypes, in particular hierarchical geographical containment and the associative relationship. We then locate this work in a broader context by reviewing various attempts to build taxonomies of thesaurus relationships, and conclude by discussing the feasibility of hierarchically augmenting the core set of thesaurus relationships, particularly the associative relationship. We discuss the possibility of enriching the specification and semantics of Related Term (RT relationships), while maintaining compatibility with traditional thesauri via a limited hierarchical extension of the associative (and hierarchical) relationships. This would be facilitated by distinguishing the type of term from the (sub)type of relationship and explicitly specifying semantic categories for terms following a faceted approach. We first illustrate how hierarchical spatial relationships can be used to provide more flexible retrieval for queries incorporating place names in applications employing online gazetteers and geographical thesauri. We then employ a set of experimental scenarios to investigate key issues affecting use of the associative (RT) thesaurus relationships in semantic distance measures. Previous work has noted the potential of RTs in thesaurus search aids but also the problem of uncontrolled expansion of query term sets. Results presented in this paper suggest the potential for taking account of the hierarchical context of an RT link and specialisations of the RT relationship
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Shiri, A.A.; Revie, C.; Chowdhury, G.: Thesaurus-assisted search term selection and query expansion : a review of user-centred studies (2002)
0.00
0.0048631616 = product of:
0.014589485 = sum of:
0.014589485 = product of:
0.043768454 = sum of:
0.043768454 = weight(_text_:retrieval in 1330) [ClassicSimilarity], result of:
0.043768454 = score(doc=1330,freq=4.0), product of:
0.15433937 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.051022716 = queryNorm
0.2835858 = fieldWeight in 1330, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=1330)
0.33333334 = coord(1/3)
0.33333334 = coord(1/3)
- Abstract
- This paper provides a review of the literature related to the application of domain-specific thesauri in the search and retrieval process. Focusing an studies that adopt a user-centred approach, the review presents a survey of the methodologies and results from empirical studies undertaken an the use of thesauri as sources of term selection for query formulation and expansion during the search process. It summarises the ways in which domain-specific thesauri from different disciplines have been used by various types of users and how these tools aid users in the selection of search terms. The review consists of two main sections: first, studies an thesaurus-aided search term selection; and second, studies dealing with query expansion using thesauri. Both sections are illustrated with case studies that have adopted a user-centred approach.
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Shiri, A.: Topic familiarity and its effects on term selection and browsing in a thesaurus-enhanced search environment (2005)
0.00
0.004052635 = product of:
0.012157904 = sum of:
0.012157904 = product of:
0.03647371 = sum of:
0.03647371 = weight(_text_:retrieval in 613) [ClassicSimilarity], result of:
0.03647371 = score(doc=613,freq=4.0), product of:
0.15433937 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.051022716 = queryNorm
0.23632148 = fieldWeight in 613, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=613)
0.33333334 = coord(1/3)
0.33333334 = coord(1/3)
- Abstract
- Purpose - To evaluate the extent to which familiarity with search topics affects the ways in which users select and browse search terms in a thesaurus-enhanced search setting. Design/methodology/approach - An experimental methodology was adopted to study users' search behaviour in an operational information retrieval environment. Findings - Topic familiarity and subject knowledge influence some search and interaction behaviours. Searches involving moderately and very familiar topics were associated with browsing around twice as many thesaurus terms as was the case for unfamiliar topics. Research limitations/implications - Some search behaviours such as thesaurus browsing and term selection could be used as an indication of user levels of topic familiarity. Practical implications - The results of this study provide design implications as to how to develop personalized search interfaces where users with varying levels of familiarity with search topics can carry out searches. Originality/value - This paper establishes the importance of topic familiarity characteristics and the effects of those characteristics on users' interaction with search interfaces enhanced with semantic tools such as thesauri.
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Shiri, A.A.; Revie, C.: End-user interaction with thesauri : an evaluation of cognitive overlap in search term selection (2004)
0.00
0.0034387745 = product of:
0.0103163235 = sum of:
0.0103163235 = product of:
0.03094897 = sum of:
0.03094897 = weight(_text_:retrieval in 2658) [ClassicSimilarity], result of:
0.03094897 = score(doc=2658,freq=2.0), product of:
0.15433937 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.051022716 = queryNorm
0.20052543 = fieldWeight in 2658, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=2658)
0.33333334 = coord(1/3)
0.33333334 = coord(1/3)
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Sihvonen, A.; Vakkari, P.: Subject knowledge improves interactive query expansion assisted by a thesaurus (2004)
0.00
0.0028656456 = product of:
0.008596936 = sum of:
0.008596936 = product of:
0.025790809 = sum of:
0.025790809 = weight(_text_:retrieval in 4417) [ClassicSimilarity], result of:
0.025790809 = score(doc=4417,freq=2.0), product of:
0.15433937 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.051022716 = queryNorm
0.16710453 = fieldWeight in 4417, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=4417)
0.33333334 = coord(1/3)
0.33333334 = coord(1/3)
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
