-
Sedelow, S.Y.; Sedelow, W.A.: Thesauri and concept-lattice semantic nets (1994)
0.03
0.026967188 = product of:
0.053934377 = sum of:
0.053934377 = product of:
0.10786875 = sum of:
0.10786875 = weight(_text_:e.g in 7733) [ClassicSimilarity], result of:
0.10786875 = score(doc=7733,freq=2.0), product of:
0.23393378 = queryWeight, product of:
5.2168427 = idf(docFreq=651, maxDocs=44218)
0.044842023 = queryNorm
0.4611081 = fieldWeight in 7733, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.2168427 = idf(docFreq=651, maxDocs=44218)
0.0625 = fieldNorm(doc=7733)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Formal concept lattices are a promising vehicle for the construction of rigorous and empirically accurate semantic nets. Presented here are results of initial experiments with concept lattices as representations of semantic relationships in the implicit structure of a large database (e.g. Roget's thesaurus)
-
Kaytoue, M.; Kuznetsov, S.O.; Assaghir, Z.; Napoli, A.: Embedding tolerance relations in concept lattices : an application in information fusion (2010)
0.02
0.016854495 = product of:
0.03370899 = sum of:
0.03370899 = product of:
0.06741798 = sum of:
0.06741798 = weight(_text_:e.g in 4843) [ClassicSimilarity], result of:
0.06741798 = score(doc=4843,freq=2.0), product of:
0.23393378 = queryWeight, product of:
5.2168427 = idf(docFreq=651, maxDocs=44218)
0.044842023 = queryNorm
0.28819257 = fieldWeight in 4843, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.2168427 = idf(docFreq=651, maxDocs=44218)
0.0390625 = fieldNorm(doc=4843)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Formal Concept Analysis (FCA) is a well founded mathematical framework used for conceptual classication and knowledge management. Given a binary table describing a relation between objects and attributes, FCA consists in building a set of concepts organized by a subsumption relation within a concept lattice. Accordingly, FCA requires to transform complex data, e.g. numbers, intervals, graphs, into binary data leading to loss of information and poor interpretability of object classes. In this paper, we propose a pre-processing method producing binary data from complex data taking advantage of similarity between objects. As a result, the concept lattice is composed of classes being maximal sets of pairwise similar objects. This method is based on FCA and on a formalization of similarity as a tolerance relation (reexive and symmetric). It applies to complex object descriptions and especially here to interval data. Moreover, it can be applied to any kind of structured data for which a similarity can be dened (sequences, graphs, etc.). Finally, an application highlights that the resulting concept lattice plays an important role in information fusion problem, as illustrated with a real-world example in agronomy.
-
Prediger, S.: Kontextuelle Urteilslogik mit Begriffsgraphen : Ein Beitrag zur Restrukturierung der mathematischen Logik (1998)
0.02
0.0151886875 = product of:
0.030377375 = sum of:
0.030377375 = product of:
0.06075475 = sum of:
0.06075475 = weight(_text_:22 in 3142) [ClassicSimilarity], result of:
0.06075475 = score(doc=3142,freq=2.0), product of:
0.15702912 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044842023 = queryNorm
0.38690117 = fieldWeight in 3142, 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=3142)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 26. 2.2008 15:58:22
-
Priss, U.; Jacob, E.: Utilizing faceted structures for information systems design (1999)
0.01
0.013483594 = product of:
0.026967188 = sum of:
0.026967188 = product of:
0.053934377 = sum of:
0.053934377 = weight(_text_:e.g in 2470) [ClassicSimilarity], result of:
0.053934377 = score(doc=2470,freq=2.0), product of:
0.23393378 = queryWeight, product of:
5.2168427 = idf(docFreq=651, maxDocs=44218)
0.044842023 = queryNorm
0.23055404 = fieldWeight in 2470, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.2168427 = idf(docFreq=651, maxDocs=44218)
0.03125 = fieldNorm(doc=2470)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- The writers show that a faceted navigation structure makes web sites easier to use. They begin by analyzing the web sites of three library and information science faculties, and seeing if the sites easily provide the answers to five specific questions, e.g., how the school ranks in national evaluations. (It is worth noting that the web site of the Faculty of Information Studies and the University of Toronto, where this bibliography is being written, would fail on four of the five questions.) Using examples from LIS web site content, they show how facets can be related and constructed, and use concept diagrams for illustration. They briefly discuss constraints necessary when joining facets: for example, enrolled students can be full- or part-time, but prospective and alumni students cannot. It should not be possible to construct terms such as "part-time alumni" (see Yannis Tzitzikas et al, below in Background). They conclude that a faceted approach is best for web site navigation, because it can clearly show where the user is in the site, what the related pages are, and how to get to them. There is a short discussion of user interfaces, and the diagrams in the paper will be of interest to anyone making a facet-based web site. This paper is clearly written, informative, and thought-provoking. Uta Priss's web site lists her other publications, many of which are related and some of which are online: http://www.upriss.org.uk/top/research.html.
-
Vogt, F.; Wille, R.: TOSCANA - a graphical tool for analyzing and exploring data (1995)
0.01
0.01215095 = product of:
0.0243019 = sum of:
0.0243019 = product of:
0.0486038 = sum of:
0.0486038 = weight(_text_:22 in 1901) [ClassicSimilarity], result of:
0.0486038 = score(doc=1901,freq=2.0), product of:
0.15702912 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044842023 = queryNorm
0.30952093 = fieldWeight in 1901, 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=1901)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Knowledge organization. 22(1995) no.2, S.78-81
-
Priss, U.: Faceted information representation (2000)
0.01
0.010632081 = product of:
0.021264162 = sum of:
0.021264162 = product of:
0.042528324 = sum of:
0.042528324 = weight(_text_:22 in 5095) [ClassicSimilarity], result of:
0.042528324 = score(doc=5095,freq=2.0), product of:
0.15702912 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044842023 = queryNorm
0.2708308 = fieldWeight in 5095, 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=5095)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 1.2016 17:47:06
-
Priss, U.: Faceted knowledge representation (1999)
0.01
0.010632081 = product of:
0.021264162 = sum of:
0.021264162 = product of:
0.042528324 = sum of:
0.042528324 = weight(_text_:22 in 2654) [ClassicSimilarity], result of:
0.042528324 = score(doc=2654,freq=2.0), product of:
0.15702912 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.044842023 = queryNorm
0.2708308 = fieldWeight in 2654, 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=2654)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 1.2016 17:30:31
