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Synak, M.; Dabrowski, M.; Kruk, S.R.: Semantic Web and ontologies (2009)
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- 31. 7.2010 16:58:22
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Priss, U.: Faceted information representation (2000)
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Kruk, S.R.; Kruk, E.; Stankiewicz, K.: Evaluation of semantic and social technologies for digital libraries (2009)
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- 1. 8.2010 12:35:22
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Gendt, M. van; Isaac, I.; Meij, L. van der; Schlobach, S.: Semantic Web techniques for multiple views on heterogeneous collections : a case study (2006)
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- Research and advanced technology for digital libraries : 10th European conference, proceedings / ECDL 2006, Alicante, Spain, September 17 - 22, 2006
-
Renear, A.H.; Wickett, K.M.; Urban, R.J.; Dubin, D.; Shreeves, S.L.: Collection/item metadata relationships (2008)
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- Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
-
Bittner, T.; Donnelly, M.; Winter, S.: Ontology and semantic interoperability (2006)
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- Date
- 3.12.2016 18:39:22
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- e
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Beppler, F.D.; Fonseca, F.T.; Pacheco, R.C.S.: Hermeneus: an architecture for an ontology-enabled information retrieval (2008)
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- 28.11.2016 12:43:22
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- e
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Zeng, M.L.; Fan, W.; Lin, X.: SKOS for an integrated vocabulary structure (2008)
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- Abstract
- In order to transfer the Chinese Classified Thesaurus (CCT) into a machine-processable format and provide CCT-based Web services, a pilot study has been conducted in which a variety of selected CCT classes and mapped thesaurus entries are encoded with SKOS. OWL and RDFS are also used to encode the same contents for the purposes of feasibility and cost-benefit comparison. CCT is a collected effort led by the National Library of China. It is an integration of the national standards Chinese Library Classification (CLC) 4th edition and Chinese Thesaurus (CT). As a manually created mapping product, CCT provides for each of the classes the corresponding thesaurus terms, and vice versa. The coverage of CCT includes four major clusters: philosophy, social sciences and humanities, natural sciences and technologies, and general works. There are 22 main-classes, 52,992 sub-classes and divisions, 110,837 preferred thesaurus terms, 35,690 entry terms (non-preferred terms), and 59,738 pre-coordinated headings (Chinese Classified Thesaurus, 2005) Major challenges of encoding this large vocabulary comes from its integrated structure. CCT is a result of the combination of two structures (illustrated in Figure 1): a thesaurus that uses ISO-2788 standardized structure and a classification scheme that is basically enumerative, but provides some flexibility for several kinds of synthetic mechanisms Other challenges include the complex relationships caused by differences of granularities of two original schemes and their presentation with various levels of SKOS elements; as well as the diverse coordination of entries due to the use of auxiliary tables and pre-coordinated headings derived from combining classes, subdivisions, and thesaurus terms, which do not correspond to existing unique identifiers. The poster reports the progress, shares the sample SKOS entries, and summarizes problems identified during the SKOS encoding process. Although OWL Lite and OWL Full provide richer expressiveness, the cost-benefit issues and the final purposes of encoding CCT raise questions of using such approaches.
- Language
- e
- Source
- Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
-
Dobrev, P.; Kalaydjiev, O.; Angelova, G.: From conceptual structures to semantic interoperability of content (2007)
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- e
- 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
-
Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie (2005)
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- Date
- 11. 2.2011 18:22:58
-
Bruijn, J. de; Fensel, D.: Ontologies and their definition (2009)
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- Abstract
- This entry introduces ontologies as a potential "silver bullet" for knowledge management, enterprise application integration, and e-commerce. Ontologies enable knowledge sharing and knowledge reuse. The degree to which an ontology is machine-understandable, its formality, is determined by the language used for the specification of the ontology. There exists a trade-off between the expressiveness of an ontology language and the modeling support it provides for the ontology developer. This entry also describes how different knowledge representation formalisms, together with the Web languages XML and RDF, have influenced the development of the Web ontology language OWL.
- Content
- Digital unter: http://dx.doi.org/10.1081/E-ELIS3-120039479. Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.
- Language
- e
-
Green, R.: WordNet (2009)
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- Content
- Digital unter: http://dx.doi.org/10.1081/E-ELIS3-120044739. Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.
- Language
- e
-
Miller, R.: Three problems in logic-based knowledge representation (2006)
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- Abstract
- Purpose - The purpose of this article is to give a non-technical overview of some of the technical progress made recently on tackling three fundamental problems in the area of formal knowledge representation/artificial intelligence. These are the Frame Problem, the Ramification Problem, and the Qualification Problem. The article aims to describe the development of two logic-based languages, the Event Calculus and Modular-E, to address various aspects of these issues. The article also aims to set this work in the wider context of contemporary developments in applied logic, non-monotonic reasoning and formal theories of common sense. Design/methodology/approach - The study applies symbolic logic to model aspects of human knowledge and reasoning. Findings - The article finds that there are fundamental interdependencies between the three problems mentioned above. The conceptual framework shared by the Event Calculus and Modular-E is appropriate for providing principled solutions to them. Originality/value - This article provides an overview of an important approach to dealing with three fundamental issues in artificial intelligence.
- Language
- e
-
Nelson, S.J.; Powell, T.; Srinivasan, S.; Humphreys, B.L.: Unified Medical Language System® (UMLS®) Project (2009)
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- Content
- Digital unter: http://dx.doi.org/10.1081/E-ELIS3-120043969. Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.
- Language
- e
-
Pepper, S.: Topic maps (2009)
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- Abstract
- Topic Maps is an international standard technology for describing knowledge structures and using them to improve the findability of information. It is based on a formal model that subsumes those of traditional finding aids such as indexes, glossaries, and thesauri, and extends them to cater for the additional complexities of digital information. Topic Maps is increasingly used in enterprise information integration, knowledge management, e-learning, and digital libraries, and as the foundation for Web-based information delivery solutions. This entry provides a comprehensive treatment of the core concepts, as well as describing the background and current status of the standard and its relationship to traditional knowledge organization techniques.
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Iglesias, E.; Hye, S.S.: Topic maps and the ILS : an undelivered promise (2008)
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- Abstract
- Purpose - The purpose of this paper is to provide an overview of the current use of topic maps in the library field, how they might be integrated into the ILS structure and some of the inherent challenges in trying to transform MARC data. Design/methodology/approach - A review of available literature was conducted as well as e-mail interviews with researchers and vendors in the field. An introduction to some of the basic concepts quickly leads into a recap of some of the possibilities that have been tried with this technology in the library field. Specific examples of the use of the XML standard XTM are given as well as some theoretical possibilities discussed. Finally some thought is given to where this technology will fit into the ILS. Findings - The paper finds that more work needs to be done by vendors and libraries in structuring data to allow for easier transformation. Research limitations/implications - This study was a limited overview. The lack of training materials and software make topics maps have an unnecessarily high barrier to entry. Practical implications - This paper points a way for further research and a need for basic tools and training geared towards the library community. Originality/value - This paper attempts to address some of the potential and challenges associated with using topic maps in a library environment, especially as part of an ILS.
- Language
- e
-
McGuinness, D.L.: Ontologies come of age (2003)
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- Abstract
- Ontologies have moved beyond the domains of library science, philosophy, and knowledge representation. They are now the concerns of marketing departments, CEOs, and mainstream business. Research analyst companies such as Forrester Research report on the critical roles of ontologies in support of browsing and search for e-commerce and in support of interoperability for facilitation of knowledge management and configuration. One now sees ontologies used as central controlled vocabularies that are integrated into catalogues, databases, web publications, knowledge management applications, etc. Large ontologies are essential components in many online applications including search (such as Yahoo and Lycos), e-commerce (such as Amazon and eBay), configuration (such as Dell and PC-Order), etc. One also sees ontologies that have long life spans, sometimes in multiple projects (such as UMLS, SIC codes, etc.). Such diverse usage generates many implications for ontology environments. In this paper, we will discuss ontologies and requirements in their current instantiations on the web today. We will describe some desirable properties of ontologies. We will also discuss how both simple and complex ontologies are being and may be used to support varied applications. We will conclude with a discussion of emerging trends in ontologies and their environments and briefly mention our evolving ontology evolution environment.
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Marcoux, Y.; Rizkallah, E.: Knowledge organization in the light of intertextual semantics : a natural-language analysis of controlled vocabularies (2008)
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- Language
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Kayed, A.; Hirzallah, N.; Al Shalabi, L.A.; Najjar, M.: Building ontological relationships : a new approach (2008)
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- Abstract
- Ontology plays an essential role in recognizing the meaning of the information in Web documents. It has been shown that extracting concepts is easier than building relationships among them. For a defined set of concepts, many existing algorithms produce all possible relationships for that set. This makes the process of refining the relationships almost impossible. A new algorithm is needed to reduce the number of relationships among a defined set of concepts produced by existing algorithms. This article contributes such an algorithm, which enables a domain-knowledge expert to refine the relationships linking a set of concepts. In the research reported here, text-mining tools have been used to extract concepts in the domain of e-commerce laws. A new algorithm has been proposed to reduce the number of extracted relationships. It groups the concepts according to the number of relationships with other concepts and provides formalization. An experiment and software have been built, proving that reducing the number of relationships will reduce the efforts needed from a human expert.
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Kruk, S.R.; Westerki, A.; Kruk, E.: Architecture of semantic digital libraries (2009)
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