-
Collard, J.; Paiva, V. de; Fong, B.; Subrahmanian, E.: Extracting mathematical concepts from text (2022)
0.08
0.075093836 = product of:
0.11264075 = sum of:
0.081087664 = weight(_text_:v in 668) [ClassicSimilarity], result of:
0.081087664 = score(doc=668,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.3767552 = fieldWeight in 668, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0546875 = fieldNorm(doc=668)
0.031553093 = product of:
0.06310619 = sum of:
0.06310619 = weight(_text_:de in 668) [ClassicSimilarity], result of:
0.06310619 = score(doc=668,freq=2.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.33236697 = fieldWeight in 668, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.0546875 = fieldNorm(doc=668)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Schreiber, G.; Amin, A.; Assem, M. van; Boer, V. de; Hardman, L.; Hildebrand, M.; Hollink, L.; Huang, Z.; Kersen, J. van; Niet, M. de; Omelayenko, B.; Ossenbruggen, J. van; Siebes, R.; Taekema, J.; Wielemaker, J.; Wielinga, B.: MultimediaN E-Culture demonstrator (2006)
0.07
0.07183456 = product of:
0.10775183 = sum of:
0.06950371 = weight(_text_:v in 4648) [ClassicSimilarity], result of:
0.06950371 = score(doc=4648,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.32293302 = fieldWeight in 4648, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.046875 = fieldNorm(doc=4648)
0.038248125 = product of:
0.07649625 = sum of:
0.07649625 = weight(_text_:de in 4648) [ClassicSimilarity], result of:
0.07649625 = score(doc=4648,freq=4.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.4028896 = fieldWeight in 4648, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.046875 = fieldNorm(doc=4648)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Deokattey, S.; Neelameghan, A.; Kumar, V.: ¬A method for developing a domain ontology : a case study for a multidisciplinary subject (2010)
0.07
0.0680257 = product of:
0.10203855 = sum of:
0.081087664 = weight(_text_:v in 3694) [ClassicSimilarity], result of:
0.081087664 = score(doc=3694,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.3767552 = fieldWeight in 3694, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0546875 = fieldNorm(doc=3694)
0.020950887 = product of:
0.041901775 = sum of:
0.041901775 = weight(_text_:22 in 3694) [ClassicSimilarity], result of:
0.041901775 = score(doc=3694,freq=2.0), product of:
0.15471569 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044181384 = queryNorm
0.2708308 = fieldWeight in 3694, 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=3694)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Date
- 22. 7.2010 19:41:16
-
Schreiber, G.; Amin, A.; Assem, M. van; Boer, V. de; Hardman, L.; Hildebrand, M.; Omelayenko, B.; Ossenbruggen, J. van; Wielemaker, J.; Wielinga, B.; Tordai, A.; Aroyoa, L.: Semantic annotation and search of cultural-heritage collections : the MultimediaN E-Culture demonstrator (2008)
0.06
0.06436615 = product of:
0.09654922 = sum of:
0.06950371 = weight(_text_:v in 4646) [ClassicSimilarity], result of:
0.06950371 = score(doc=4646,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.32293302 = fieldWeight in 4646, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.046875 = fieldNorm(doc=4646)
0.027045509 = product of:
0.054091018 = sum of:
0.054091018 = weight(_text_:de in 4646) [ClassicSimilarity], result of:
0.054091018 = score(doc=4646,freq=2.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.28488597 = fieldWeight in 4646, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.046875 = fieldNorm(doc=4646)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
De Maio, C.; Fenza, G.; Loia, V.; Senatore, S.: Hierarchical web resources retrieval by exploiting Fuzzy Formal Concept Analysis (2012)
0.06
0.06436615 = product of:
0.09654922 = sum of:
0.06950371 = weight(_text_:v in 2737) [ClassicSimilarity], result of:
0.06950371 = score(doc=2737,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.32293302 = fieldWeight in 2737, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.046875 = fieldNorm(doc=2737)
0.027045509 = product of:
0.054091018 = sum of:
0.054091018 = weight(_text_:de in 2737) [ClassicSimilarity], result of:
0.054091018 = score(doc=2737,freq=2.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.28488597 = fieldWeight in 2737, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.046875 = fieldNorm(doc=2737)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Boer, V. de; Wielemaker, J.; Gent, J. van; Hildebrand, M.; Isaac, A.; Ossenbruggen, J. van; Schreiber, G.: Supporting linked data production for cultural heritage institutes : the Amsterdam Museum case study (2012)
0.05
0.05363846 = product of:
0.08045769 = sum of:
0.05791976 = weight(_text_:v in 265) [ClassicSimilarity], result of:
0.05791976 = score(doc=265,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.26911086 = fieldWeight in 265, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0390625 = fieldNorm(doc=265)
0.022537926 = product of:
0.045075852 = sum of:
0.045075852 = weight(_text_:de in 265) [ClassicSimilarity], result of:
0.045075852 = score(doc=265,freq=2.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.23740499 = fieldWeight in 265, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.0390625 = fieldNorm(doc=265)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
-
Gil-Berrozpe, J.C.: Description, categorization, and representation of hyponymy in environmental terminology (2022)
0.04
0.042910766 = product of:
0.06436615 = sum of:
0.04633581 = weight(_text_:v in 1004) [ClassicSimilarity], result of:
0.04633581 = score(doc=1004,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.21528868 = fieldWeight in 1004, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.03125 = fieldNorm(doc=1004)
0.01803034 = product of:
0.03606068 = sum of:
0.03606068 = weight(_text_:de in 1004) [ClassicSimilarity], result of:
0.03606068 = score(doc=1004,freq=2.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.18992399 = fieldWeight in 1004, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.03125 = fieldNorm(doc=1004)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Terminology has evolved from static and prescriptive theories to dynamic and cognitive approaches. Thanks to these approaches, there have been significant advances in the design and elaboration of terminological resources. This has resulted in the creation of tools such as terminological knowledge bases, which are able to show how concepts are interrelated through different semantic or conceptual relations. Of these relations, hyponymy is the most relevant to terminology work because it deals with concept categorization and term hierarchies. This doctoral thesis presents an enhancement of the semantic structure of EcoLexicon, a terminological knowledge base on environmental science. The aim of this research was to improve the description, categorization, and representation of hyponymy in environmental terminology. Therefore, we created HypoLexicon, a new stand-alone module for EcoLexicon in the form of a hyponymy-based terminological resource. This resource contains twelve terminological entries from four specialized domains (Biology, Chemistry, Civil Engineering, and Geology), which consist of 309 concepts and 465 terms associated with those concepts. This research was mainly based on the theoretical premises of Frame-based Terminology. This theory was combined with Cognitive Linguistics, for conceptual description and representation; Corpus Linguistics, for the extraction and processing of linguistic and terminological information; and Ontology, related to hyponymy and relevant for concept categorization. HypoLexicon was constructed from the following materials: (i) the EcoLexicon English Corpus; (ii) other specialized terminological resources, including EcoLexicon; (iii) Sketch Engine; and (iv) Lexonomy. This thesis explains the methodologies applied for corpus extraction and compilation, corpus analysis, the creation of conceptual hierarchies, and the design of the terminological template. The results of the creation of HypoLexicon are discussed by highlighting the information in the hyponymy-based terminological entries: (i) parent concept (hypernym); (ii) child concepts (hyponyms, with various hyponymy levels); (iii) terminological definitions; (iv) conceptual categories; (v) hyponymy subtypes; and (vi) hyponymic contexts. Furthermore, the features and the navigation within HypoLexicon are described from the user interface and the admin interface. In conclusion, this doctoral thesis lays the groundwork for developing a terminological resource that includes definitional, relational, ontological and contextual information about specialized hypernyms and hyponyms. All of this information on specialized knowledge is simple to follow thanks to the hierarchical structure of the terminological template used in HypoLexicon. Therefore, not only does it enhance knowledge representation, but it also facilitates its acquisition.
- Imprint
- Granada : Universidad de Granada
-
OWL Web Ontology Language Test Cases (2004)
0.04
0.040003035 = product of:
0.1200091 = sum of:
0.1200091 = sum of:
0.07212136 = weight(_text_:de in 4685) [ClassicSimilarity], result of:
0.07212136 = score(doc=4685,freq=2.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.37984797 = fieldWeight in 4685, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.0625 = fieldNorm(doc=4685)
0.047887743 = weight(_text_:22 in 4685) [ClassicSimilarity], result of:
0.047887743 = score(doc=4685,freq=2.0), product of:
0.15471569 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044181384 = queryNorm
0.30952093 = fieldWeight in 4685, 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=4685)
0.33333334 = coord(1/3)
- Date
- 14. 8.2011 13:33:22
- Editor
- Carroll, J.J. u. J. de Roo
-
Almeida Campos, M.L. de; Machado Campos, M.L.; Dávila, A.M.R.; Espanha Gomes, H.; Campos, L.M.; Lira e Oliveira, L. de: Information sciences methodological aspects applied to ontology reuse tools : a study based on genomic annotations in the domain of trypanosomatides (2013)
0.03
0.031225573 = product of:
0.093676716 = sum of:
0.093676716 = sum of:
0.06374688 = weight(_text_:de in 635) [ClassicSimilarity], result of:
0.06374688 = score(doc=635,freq=4.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.33574134 = fieldWeight in 635, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.0390625 = fieldNorm(doc=635)
0.029929841 = weight(_text_:22 in 635) [ClassicSimilarity], result of:
0.029929841 = score(doc=635,freq=2.0), product of:
0.15471569 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044181384 = queryNorm
0.19345059 = fieldWeight in 635, 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=635)
0.33333334 = coord(1/3)
- Date
- 22. 2.2013 12:03:53
-
Broughton, V.: Facet analysis as a fundamental theory for structuring subject organization tools (2007)
0.03
0.03089054 = product of:
0.09267162 = sum of:
0.09267162 = weight(_text_:v in 537) [ClassicSimilarity], result of:
0.09267162 = score(doc=537,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.43057737 = fieldWeight in 537, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0625 = fieldNorm(doc=537)
0.33333334 = coord(1/3)
-
Gödert, W.; Hubrich, J.; Nagelschmidt, M.: Semantic knowledge representation for information retrieval (2014)
0.03
0.030002277 = product of:
0.09000683 = sum of:
0.09000683 = sum of:
0.054091018 = weight(_text_:de in 987) [ClassicSimilarity], result of:
0.054091018 = score(doc=987,freq=2.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.28488597 = fieldWeight in 987, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.046875 = fieldNorm(doc=987)
0.035915807 = weight(_text_:22 in 987) [ClassicSimilarity], result of:
0.035915807 = score(doc=987,freq=2.0), product of:
0.15471569 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044181384 = queryNorm
0.23214069 = fieldWeight in 987, 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=987)
0.33333334 = coord(1/3)
- Date
- 23. 7.2017 13:49:22
- Imprint
- Berlin : De Gruyter Saur
-
Boteram, F.: Semantische Relationen in Dokumentationssprachen : vom Thesaurus zum semantischen Netz (2008)
0.03
0.027029222 = product of:
0.081087664 = sum of:
0.081087664 = weight(_text_:v in 2461) [ClassicSimilarity], result of:
0.081087664 = score(doc=2461,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.3767552 = fieldWeight in 2461, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0546875 = fieldNorm(doc=2461)
0.33333334 = coord(1/3)
- Pages
- V, 107 S. + CD
-
Scheir, P.; Pammer, V.; Lindstaedt, S.N.: Information retrieval on the Semantic Web : does it exist? (2007)
0.03
0.027029222 = product of:
0.081087664 = sum of:
0.081087664 = weight(_text_:v in 4329) [ClassicSimilarity], result of:
0.081087664 = score(doc=4329,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.3767552 = fieldWeight in 4329, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0546875 = fieldNorm(doc=4329)
0.33333334 = coord(1/3)
-
Atanassova, I.; Bertin, M.: Semantic facets for scientific information retrieval (2014)
0.03
0.027029222 = product of:
0.081087664 = sum of:
0.081087664 = weight(_text_:v in 4471) [ClassicSimilarity], result of:
0.081087664 = score(doc=4471,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.3767552 = fieldWeight in 4471, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.0546875 = fieldNorm(doc=4471)
0.33333334 = coord(1/3)
- Source
- Semantic Web Evaluation Challenge. SemWebEval 2014 at ESWC 2014, Anissaras, Crete, Greece, May 25-29, 2014, Revised Selected Papers. Eds.: V. Presutti et al
-
Baião Salgado Silva, G.; Lima, G.Â. Borém de Oliveira: Using topic maps in establishing compatibility of semantically structured hypertext contents (2012)
0.03
0.025001898 = product of:
0.075005695 = sum of:
0.075005695 = sum of:
0.045075852 = weight(_text_:de in 633) [ClassicSimilarity], result of:
0.045075852 = score(doc=633,freq=2.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.23740499 = fieldWeight in 633, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.0390625 = fieldNorm(doc=633)
0.029929841 = weight(_text_:22 in 633) [ClassicSimilarity], result of:
0.029929841 = score(doc=633,freq=2.0), product of:
0.15471569 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044181384 = queryNorm
0.19345059 = fieldWeight in 633, 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=633)
0.33333334 = coord(1/3)
- Date
- 22. 2.2013 11:39:23
-
Hannech, A.: Système de recherche d'information étendue basé sur une projection multi-espaces (2018)
0.02
0.02366184 = product of:
0.07098552 = sum of:
0.07098552 = product of:
0.14197104 = sum of:
0.14197104 = weight(_text_:de in 4472) [ClassicSimilarity], result of:
0.14197104 = score(doc=4472,freq=124.0), product of:
0.18986902 = queryWeight, product of:
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.044181384 = queryNorm
0.74773145 = fieldWeight in 4472, product of:
11.135529 = tf(freq=124.0), with freq of:
124.0 = termFreq=124.0
4.297489 = idf(docFreq=1634, maxDocs=44218)
0.015625 = fieldNorm(doc=4472)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Abstract
- Depuis son apparition au début des années 90, le World Wide Web (WWW ou Web) a offert un accès universel aux connaissances et le monde de l'information a été principalement témoin d'une grande révolution (la révolution numérique). Il est devenu rapidement très populaire, ce qui a fait de lui la plus grande et vaste base de données et de connaissances existantes grâce à la quantité et la diversité des données qu'il contient. Cependant, l'augmentation et l'évolution considérables de ces données soulèvent d'importants problèmes pour les utilisateurs notamment pour l'accès aux documents les plus pertinents à leurs requêtes de recherche. Afin de faire face à cette explosion exponentielle du volume de données et faciliter leur accès par les utilisateurs, différents modèles sont proposés par les systèmes de recherche d'information (SRIs) pour la représentation et la recherche des documents web. Les SRIs traditionnels utilisent, pour indexer et récupérer ces documents, des mots-clés simples qui ne sont pas sémantiquement liés. Cela engendre des limites en termes de la pertinence et de la facilité d'exploration des résultats. Pour surmonter ces limites, les techniques existantes enrichissent les documents en intégrant des mots-clés externes provenant de différentes sources. Cependant, ces systèmes souffrent encore de limitations qui sont liées aux techniques d'exploitation de ces sources d'enrichissement. Lorsque les différentes sources sont utilisées de telle sorte qu'elles ne peuvent être distinguées par le système, cela limite la flexibilité des modèles d'exploration qui peuvent être appliqués aux résultats de recherche retournés par ce système. Les utilisateurs se sentent alors perdus devant ces résultats, et se retrouvent dans l'obligation de les filtrer manuellement pour sélectionner l'information pertinente. S'ils veulent aller plus loin, ils doivent reformuler et cibler encore plus leurs requêtes de recherche jusqu'à parvenir aux documents qui répondent le mieux à leurs attentes. De cette façon, même si les systèmes parviennent à retrouver davantage des résultats pertinents, leur présentation reste problématique. Afin de cibler la recherche à des besoins d'information plus spécifiques de l'utilisateur et améliorer la pertinence et l'exploration de ses résultats de recherche, les SRIs avancés adoptent différentes techniques de personnalisation de données qui supposent que la recherche actuelle d'un utilisateur est directement liée à son profil et/ou à ses expériences de navigation/recherche antérieures. Cependant, cette hypothèse ne tient pas dans tous les cas, les besoins de l'utilisateur évoluent au fil du temps et peuvent s'éloigner de ses intérêts antérieurs stockés dans son profil.
Dans d'autres cas, le profil de l'utilisateur peut être mal exploité pour extraire ou inférer ses nouveaux besoins en information. Ce problème est beaucoup plus accentué avec les requêtes ambigües. Lorsque plusieurs centres d'intérêt auxquels est liée une requête ambiguë sont identifiés dans le profil de l'utilisateur, le système se voit incapable de sélectionner les données pertinentes depuis ce profil pour répondre à la requête. Ceci a un impact direct sur la qualité des résultats fournis à cet utilisateur. Afin de remédier à quelques-unes de ces limitations, nous nous sommes intéressés dans ce cadre de cette thèse de recherche au développement de techniques destinées principalement à l'amélioration de la pertinence des résultats des SRIs actuels et à faciliter l'exploration de grandes collections de documents. Pour ce faire, nous proposons une solution basée sur un nouveau concept d'indexation et de recherche d'information appelé la projection multi-espaces. Cette proposition repose sur l'exploitation de différentes catégories d'information sémantiques et sociales qui permettent d'enrichir l'univers de représentation des documents et des requêtes de recherche en plusieurs dimensions d'interprétations. L'originalité de cette représentation est de pouvoir distinguer entre les différentes interprétations utilisées pour la description et la recherche des documents. Ceci donne une meilleure visibilité sur les résultats retournés et aide à apporter une meilleure flexibilité de recherche et d'exploration, en donnant à l'utilisateur la possibilité de naviguer une ou plusieurs vues de données qui l'intéressent le plus. En outre, les univers multidimensionnels de représentation proposés pour la description des documents et l'interprétation des requêtes de recherche aident à améliorer la pertinence des résultats de l'utilisateur en offrant une diversité de recherche/exploration qui aide à répondre à ses différents besoins et à ceux des autres différents utilisateurs. Cette étude exploite différents aspects liés à la recherche personnalisée et vise à résoudre les problèmes engendrés par l'évolution des besoins en information de l'utilisateur. Ainsi, lorsque le profil de cet utilisateur est utilisé par notre système, une technique est proposée et employée pour identifier les intérêts les plus représentatifs de ses besoins actuels dans son profil. Cette technique se base sur la combinaison de trois facteurs influents, notamment le facteur contextuel, fréquentiel et temporel des données. La capacité des utilisateurs à interagir, à échanger des idées et d'opinions, et à former des réseaux sociaux sur le Web, a amené les systèmes à s'intéresser aux types d'interactions de ces utilisateurs, au niveau d'interaction entre eux ainsi qu'à leurs rôles sociaux dans le système. Ces informations sociales sont abordées et intégrées dans ce travail de recherche. L'impact et la manière de leur intégration dans le processus de RI sont étudiés pour améliorer la pertinence des résultats.
- Footnote
- Thèse de doctorat, Université du Québec à Chicoutimi.
-
Braun, S.; Schmidt, A.; Walter, A.; Zacharias, V.: Von Tags zu semantischen Beziehungen : kollaborative Ontologiereifung (2008)
0.02
0.023167904 = product of:
0.06950371 = sum of:
0.06950371 = weight(_text_:v in 2896) [ClassicSimilarity], result of:
0.06950371 = score(doc=2896,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.32293302 = fieldWeight in 2896, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.046875 = fieldNorm(doc=2896)
0.33333334 = coord(1/3)
-
Iosif, V.; Mika, P.; Larsson, R.; Akkermans, H.: Field experimenting with Semantic Web tools in a virtual organization (2004)
0.02
0.023167904 = product of:
0.06950371 = sum of:
0.06950371 = weight(_text_:v in 4412) [ClassicSimilarity], result of:
0.06950371 = score(doc=4412,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.32293302 = fieldWeight in 4412, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.046875 = fieldNorm(doc=4412)
0.33333334 = coord(1/3)
-
Assem, M. van; Malaisé, V.; Miles, A.; Schreiber, G.: ¬A method to convert thesauri to SKOS (2006)
0.02
0.023167904 = product of:
0.06950371 = sum of:
0.06950371 = weight(_text_:v in 4642) [ClassicSimilarity], result of:
0.06950371 = score(doc=4642,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.32293302 = fieldWeight in 4642, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.046875 = fieldNorm(doc=4642)
0.33333334 = coord(1/3)
-
Uren, V.; Cimiano, P.; Iria, J.; Handschuh, S.; Vargas-Vera, M.; Motta, E.; Ciravegnac, F.: Semantic annotation for knowledge management : requirements and a survey of the state of the art (2006)
0.02
0.023167904 = product of:
0.06950371 = sum of:
0.06950371 = weight(_text_:v in 229) [ClassicSimilarity], result of:
0.06950371 = score(doc=229,freq=2.0), product of:
0.2152264 = queryWeight, product of:
4.871427 = idf(docFreq=920, maxDocs=44218)
0.044181384 = queryNorm
0.32293302 = fieldWeight in 229, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.871427 = idf(docFreq=920, maxDocs=44218)
0.046875 = fieldNorm(doc=229)
0.33333334 = coord(1/3)
