-
Peponakis, M.; Mastora, A.; Kapidakis, S.; Doerr, M.: Expressiveness and machine processability of Knowledge Organization Systems (KOS) : an analysis of concepts and relations (2020)
0.03
0.0308804 = product of:
0.1080814 = sum of:
0.03675035 = weight(_text_:subject in 5787) [ClassicSimilarity], result of:
0.03675035 = score(doc=5787,freq=6.0), product of:
0.10738805 = queryWeight, product of:
3.576596 = idf(docFreq=3361, maxDocs=44218)
0.03002521 = queryNorm
0.34222013 = fieldWeight in 5787, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.576596 = idf(docFreq=3361, maxDocs=44218)
0.0390625 = fieldNorm(doc=5787)
0.023791125 = weight(_text_:classification in 5787) [ClassicSimilarity], result of:
0.023791125 = score(doc=5787,freq=4.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.24880521 = fieldWeight in 5787, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.0390625 = fieldNorm(doc=5787)
0.0237488 = product of:
0.0474976 = sum of:
0.0474976 = weight(_text_:schemes in 5787) [ClassicSimilarity], result of:
0.0474976 = score(doc=5787,freq=2.0), product of:
0.16067243 = queryWeight, product of:
5.3512506 = idf(docFreq=569, maxDocs=44218)
0.03002521 = queryNorm
0.2956176 = fieldWeight in 5787, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.3512506 = idf(docFreq=569, maxDocs=44218)
0.0390625 = fieldNorm(doc=5787)
0.5 = coord(1/2)
0.023791125 = weight(_text_:classification in 5787) [ClassicSimilarity], result of:
0.023791125 = score(doc=5787,freq=4.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.24880521 = fieldWeight in 5787, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.0390625 = fieldNorm(doc=5787)
0.2857143 = coord(4/14)
- Abstract
- This study considers the expressiveness (that is the expressive power or expressivity) of different types of Knowledge Organization Systems (KOS) and discusses its potential to be machine-processable in the context of the Semantic Web. For this purpose, the theoretical foundations of KOS are reviewed based on conceptualizations introduced by the Functional Requirements for Subject Authority Data (FRSAD) and the Simple Knowledge Organization System (SKOS); natural language processing techniques are also implemented. Applying a comparative analysis, the dataset comprises a thesaurus (Eurovoc), a subject headings system (LCSH) and a classification scheme (DDC). These are compared with an ontology (CIDOC-CRM) by focusing on how they define and handle concepts and relations. It was observed that LCSH and DDC focus on the formalism of character strings (nomens) rather than on the modelling of semantics; their definition of what constitutes a concept is quite fuzzy, and they comprise a large number of complex concepts. By contrast, thesauri have a coherent definition of what constitutes a concept, and apply a systematic approach to the modelling of relations. Ontologies explicitly define diverse types of relations, and are by their nature machine-processable. The paper concludes that the potential of both the expressiveness and machine processability of each KOS is extensively regulated by its structural rules. It is harder to represent subject headings and classification schemes as semantic networks with nodes and arcs, while thesauri are more suitable for such a representation. In addition, a paradigm shift is revealed which focuses on the modelling of relations between concepts, rather than the concepts themselves.
-
Panzer, M.; Zeng, M.L.: Modeling classification systems in SKOS : Some challenges and best-practice (2009)
0.03
0.02731208 = product of:
0.12745637 = sum of:
0.047104023 = weight(_text_:classification in 3717) [ClassicSimilarity], result of:
0.047104023 = score(doc=3717,freq=8.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.49260917 = fieldWeight in 3717, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.0546875 = fieldNorm(doc=3717)
0.03324832 = product of:
0.06649664 = sum of:
0.06649664 = weight(_text_:schemes in 3717) [ClassicSimilarity], result of:
0.06649664 = score(doc=3717,freq=2.0), product of:
0.16067243 = queryWeight, product of:
5.3512506 = idf(docFreq=569, maxDocs=44218)
0.03002521 = queryNorm
0.41386467 = fieldWeight in 3717, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.3512506 = idf(docFreq=569, maxDocs=44218)
0.0546875 = fieldNorm(doc=3717)
0.5 = coord(1/2)
0.047104023 = weight(_text_:classification in 3717) [ClassicSimilarity], result of:
0.047104023 = score(doc=3717,freq=8.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.49260917 = fieldWeight in 3717, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.0546875 = fieldNorm(doc=3717)
0.21428572 = coord(3/14)
- Abstract
- Representing classification systems on the web for publication and exchange continues to be a challenge within the SKOS framework. This paper focuses on the differences between classification schemes and other families of KOS (knowledge organization systems) that make it difficult to express classifications without sacrificing a large amount of their semantic richness. Issues resulting from the specific set of relationships between classes and topics that defines the basic nature of any classification system are discussed. Where possible, different solutions within the frameworks of SKOS and OWL are proposed and examined.
-
Soergel, D.: Towards a relation ontology for the Semantic Web (2011)
0.01
0.008156957 = product of:
0.057098698 = sum of:
0.028549349 = weight(_text_:classification in 4342) [ClassicSimilarity], result of:
0.028549349 = score(doc=4342,freq=4.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.29856625 = fieldWeight in 4342, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.046875 = fieldNorm(doc=4342)
0.028549349 = weight(_text_:classification in 4342) [ClassicSimilarity], result of:
0.028549349 = score(doc=4342,freq=4.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.29856625 = fieldWeight in 4342, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.046875 = fieldNorm(doc=4342)
0.14285715 = coord(2/14)
- Abstract
- The Semantic Web consists of data structured for use by computer programs, such as data sets made available under the Linked Open Data initiative. Much of this data is structured following the entity-relationship model encoded in RDF for syntactic interoperability. For semantic interoperability, the semantics of the relationships used in any given dataset needs to be made explicit. Ultimately this requires an inventory of these relationships structured around a relation ontology. This talk will outline a blueprint for such an inventory, including a format for the description/definition of binary and n-ary relations, drawing on ideas put forth in the classification and thesaurus community over the last 60 years, upper level ontologies, systems like FrameNet, the Buffalo Relation Ontology, and an analysis of linked data sets.
- Source
- Classification and ontology: formal approaches and access to knowledge: proceedings of the International UDC Seminar, 19-20 September 2011, The Hague, The Netherlands. Eds.: A. Slavic u. E. Civallero
-
Boteram, F.: "Content architecture" : semantic interoperability in an international comprehensive knowledge organisation system (2010)
0.00
0.001436487 = product of:
0.020110816 = sum of:
0.020110816 = weight(_text_:bibliographic in 647) [ClassicSimilarity], result of:
0.020110816 = score(doc=647,freq=2.0), product of:
0.11688946 = queryWeight, product of:
3.893044 = idf(docFreq=2449, maxDocs=44218)
0.03002521 = queryNorm
0.17204987 = fieldWeight in 647, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.893044 = idf(docFreq=2449, maxDocs=44218)
0.03125 = fieldNorm(doc=647)
0.071428575 = coord(1/14)
- Abstract
- Purpose - This paper seeks to develop a specified typology of various levels of semantic interoperability, designed to provide semantically expressive and functional means to interconnect typologically different sub-systems in an international comprehensive knowledge organization system, supporting advanced information retrieval and exploration strategies. Design/methodology/approach - Taking the analysis of rudimentary forms of a functional interoperability based on simple pattern matching as a starting-point, more refined strategies to provide semantic interoperability, which is actually reaching the conceptual and even thematic level, are being developed. The paper also examines the potential benefits and perspectives of the selective transfer of modelling strategies from the field of semantic technologies for the refinement of relational structures of inter-system and inter-concept relations as a requirement for expressive and functional indexing languages supporting advanced types of semantic interoperability. Findings - As the principles and strategies of advanced information retrieval systems largely depend on semantic information, new concepts and strategies to achieve semantic interoperability have to be developed. Research limitations/implications - The approach has been developed in the functional and structural context of an international comprehensive system integrating several heterogeneous knowledge organization systems and indexing languages by interconnecting them to a central conceptual structure operating as a spine in an overall system designed to support retrieval and exploration of bibliographic records representing complex conceptual entities. Originality/value - Research and development aimed at providing technical and structural interoperability has to be complemented by a thorough and precise reflection and definition of various degrees and types of interoperability on the semantic level as well. The approach specifies these levels and reflects the implications and their potential for advanced strategies of retrieval and exploration.
-
Bittner, T.; Donnelly, M.; Winter, S.: Ontology and semantic interoperability (2006)
0.00
8.7171455E-4 = product of:
0.0122040035 = sum of:
0.0122040035 = product of:
0.024408007 = sum of:
0.024408007 = weight(_text_:22 in 4820) [ClassicSimilarity], result of:
0.024408007 = score(doc=4820,freq=2.0), product of:
0.10514317 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03002521 = queryNorm
0.23214069 = fieldWeight in 4820, 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=4820)
0.5 = coord(1/2)
0.071428575 = coord(1/14)
- Date
- 3.12.2016 18:39:22
-
Dobrev, P.; Kalaydjiev, O.; Angelova, G.: From conceptual structures to semantic interoperability of content (2007)
0.00
7.264289E-4 = product of:
0.010170003 = sum of:
0.010170003 = product of:
0.020340007 = sum of:
0.020340007 = weight(_text_:22 in 4607) [ClassicSimilarity], result of:
0.020340007 = score(doc=4607,freq=2.0), product of:
0.10514317 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03002521 = queryNorm
0.19345059 = fieldWeight in 4607, 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=4607)
0.5 = coord(1/2)
0.071428575 = coord(1/14)
- Source
- Conceptual structures: knowledge architectures for smart applications: 15th International Conference on Conceptual Structures, ICCS 2007, Sheffield, UK, July 22 - 27, 2007 ; proceedings. Eds.: U. Priss u.a
