Search (27 results, page 1 of 2)

  • × theme_ss:"Wissensrepräsentation"
  • × type_ss:"a"
  • × year_i:[2000 TO 2010}
  1. Semenova, E.; Stricker, M.: ¬Eine Ontologie der Wissenschaftsdisziplinen : Entwicklung eines Instrumentariums für die Wissenskommunikation (2007) 0.01 
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    Series
    Konferenz der Zentralbibliothek ... ; 4)(Schriften des Forschungszentrums Jülich : Reihe Bibliothek ; Bd. 18
  2. Kruk, S.R.; McDaniel, B.: Goals of semantic digital libraries (2009) 0.01 
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    Abstract
    Digital libraries have become commodity in the current world of Internet. More and more information is produced, and more and more non-digital information is being rendered available. The new, more user friendly, community-oriented technologies used throughout the Internet are raising the bar of expectations. Digital libraries cannot stand still with their technologies; if not for the sake of handling rapidly growing amount and diversity of information, they must provide for better user experience matching and overgrowing standards set by the industry. The next generation of digital libraries combine technological solutions, such as P2P, SOA, or Grid, with recent research on semantics and social networks. These solutions are put into practice to answer a variety of requirements imposed on digital libraries.
  3. Fenske, M.: Modell eines automatisierbaren syntaktischen Metathesaurus und seine Eignung für parlamentarische Thesauri im Internet (2006) 0.00 
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  4. Drexel, G.: Knowledge engineering for intelligent information retrieval (2001) 0.00 
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    Abstract
    This paper presents a clustered approach to designing an overall ontological model together with a general rule-based component that serves as a mapping device. By observational criteria, a multi-lingual team of experts excerpts concepts from general communication in the media. The team, then, finds equivalent expressions in English, German, French, and Spanish. On the basis of a set of ontological and lexical relations, a conceptual network is built up. Concepts are thought to be universal. Objects unique in time and space are identified by names and will be explained by the universals as their instances. Our approach relies on multi-relational descriptions of concepts. It provides a powerful tool for documentation and conceptual language learning. First and foremost, our multi-lingual, polyhierarchical ontology fills the gap of semantically-based information retrieval by generating enhanced and improved queries for internet search
  5. Wang, Y.-H.; Jhuo, P.-S.: ¬A semantic faceted search with rule-based inference (2009) 0.00 
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    Abstract
    Semantic Search has become an active research of Semantic Web in recent years. The classification methodology plays a pretty critical role in the beginning of search process to disambiguate irrelevant information. However, the applications related to Folksonomy suffer from many obstacles. This study attempts to eliminate the problems resulted from Folksonomy using existing semantic technology. We also focus on how to effectively integrate heterogeneous ontologies over the Internet to acquire the integrity of domain knowledge. A faceted logic layer is abstracted in order to strengthen category framework and organize existing available ontologies according to a series of steps based on the methodology of faceted classification and ontology construction. The result showed that our approach can facilitate the integration of inconsistent or even heterogeneous ontologies. This paper also generalizes the principles of picking appropriate facets with which our facet browser completely complies so that better semantic search result can be obtained.
  6. Griffiths, T.L.; Steyvers, M.: ¬A probabilistic approach to semantic representation (2002) 0.00 
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    Date
    29. 6.2015 14:55:01
    29. 6.2015 16:09:05
  7. Köhler, J.; Philippi, S.; Specht, M.; Rüegg, A.: Ontology based text indexing and querying for the semantic web (2006) 0.00 
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    Abstract
    This publication shows how the gap between the HTML based internet and the RDF based vision of the semantic web might be bridged, by linking words in texts to concepts of ontologies. Most current search engines use indexes that are built at the syntactical level and return hits based on simple string comparisons. However, the indexes do not contain synonyms, cannot differentiate between homonyms ('mouse' as a pointing vs. 'mouse' as an animal) and users receive different search results when they use different conjugation forms of the same word. In this publication, we present a system that uses ontologies and Natural Language Processing techniques to index texts, and thus supports word sense disambiguation and the retrieval of texts that contain equivalent words, by indexing them to concepts of ontologies. For this purpose, we developed fully automated methods for mapping equivalent concepts of imported RDF ontologies (for this prototype WordNet, SUMO and OpenCyc). These methods will thus allow the seamless integration of domain specific ontologies for concept based information retrieval in different domains. To demonstrate the practical workability of this approach, a set of web pages that contain synonyms and homonyms were indexed and can be queried via a search engine like query frontend. However, the ontology based indexing approach can also be used for other data mining applications such text clustering, relation mining and for searching free text fields in biological databases. The ontology alignment methods and some of the text mining principles described in this publication are now incorporated into the ONDEX system http://ondex.sourceforge.net/.
  8. Panyr, J.: Thesauri, Semantische Netze, Frames, Topic Maps, Taxonomien, Ontologien - begriffliche Verwirrung oder konzeptionelle Vielfalt? (2006) 0.00 
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    Abstract
    Mit der Verbreitung des Internets und insbesondere mit der Einführung des Begriffes Semantic Web wurde eine Reihe von neuen Begriffen (Termini) für nicht immer neue Entwicklungen eingeführt, ohne dass die bisherige Begriffsbildung bzw. die schon angewandten Lösungen in benachbarten Fachgebieten hinreichend berücksichtigt wurden. Dabei wird manchmal der Eindruck erweckt, dass die populären Anwendungszweige der Informatik (oder auch der Informationswissenschaft) hauptsächlich durch wirksame Schlagworte gesteuert werden. Im deutschsprachigen Raum kommt auch noch die oftmals (vermeintlich) werbewirksame Verwendung der nicht übersetzten englischen Ausdrücke im Original oder als eingedeutschter Termini. Letzteres führt dabei nicht selten zur semantischen Verschiebungen der Bedeutung der ursprünglichen Begriffe. So z.B. wird das englische Wort concept (entspricht dem deutschen Wort Begriff) mit allen seinen Ableitungen (wie z.B. conceptualization - Verbegrifflichung, conceptual - begrifflich) in der eingedeutschten unübersetzten Form fälschlich verwendet, ohne dass diese Wortschöpfungen dabei näher erläutert werden. Es wird dadurch der Eindruck erweckt, dass etwas inhaltlich Neues eingeführt wird. Häufig werden diese Begriffe auch nebeneinander verwendet, wie z.B. in der Definition von Ontologie in der Internet-Enzyklopädie Wikipedia " ... System von Begriffen und/oder Konzepten und Relationen zwischen diesen Begriffen". In den zahlreichen Studien über die Ontologie wird auf die Möglichkeit ähnlicher Verwendung von Thesauri nicht eingegangen, sie existieren im Kontext der Veröffentlichung überhaupt nicht (vgl. z.B. die Studie von Smith (2003), die jedoch mit Bezug zu Philosophie gerade zu überfrachtet wird). In der folgenden Arbeit werden verwandte Repräsentationsarten, wie z.B. Thesaurus, semantisches Netz, Frames, Themenkarten (Topic Maps) und Ontologie definiert. Die Gemeinsamkeiten dieser Repräsentationsformen werden dabei im Vordergrund stehen. Die in der Literatur häufig betonten Unterschiede sind manchmal aus der Unkenntnis der theoretischen Basis dieser Ansätze abzuleiten. Eine Koexistenz jeweiliger Repräsentation ist vonnöten. Im Vordergrund des Aufsatzes steht die mögliche Wechselwirkung zwischen Ontologien und Thesauri.
  9. Mustafa El Hadi, W.: Terminologies, ontologies and information access (2006) 0.00 
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    Date
    29. 2.2008 16:25:23
  10. Synak, M.; Dabrowski, M.; Kruk, S.R.: Semantic Web and ontologies (2009) 0.00 
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    Date
    31. 7.2010 16:58:22
  11. Davies, J.; Duke, A.; Stonkus, A.: OntoShare: evolving ontologies in a knowledge sharing system (2004) 0.00 
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    Abstract
    We saw in the introduction how the Semantic Web makes possible a new generation of knowledge management tools. We now turn our attention more specifically to Semantic Web based support for virtual communities of practice. The notion of communities of practice has attracted much attention in the field of knowledge management. Communities of practice are groups within (or sometimes across) organizations who share a common set of information needs or problems. They are typically not a formal organizational unit but an informal network, each sharing in part a common agenda and shared interests or issues. In one example it was found that a lot of knowledge sharing among copier engineers took place through informal exchanges, often around a water cooler. As well as local, geographically based communities, trends towards flexible working and globalisation have led to interest in supporting dispersed communities using Internet technology. The challenge for organizations is to support such communities and make them effective. Provided with an ontology meeting the needs of a particular community of practice, knowledge management tools can arrange knowledge assets into the predefined conceptual classes of the ontology, allowing more natural and intuitive access to knowledge. Knowledge management tools must give users the ability to organize information into a controllable asset. Building an intranet-based store of information is not sufficient for knowledge management; the relationships within the stored information are vital. These relationships cover such diverse issues as relative importance, context, sequence, significance, causality and association. The potential for knowledge management tools is vast; not only can they make better use of the raw information already available, but they can sift, abstract and help to share new information, and present it to users in new and compelling ways.
  12. Fischer, D.H.: ¬Ein Lehrbeispiel für eine Ontologie : OpenCyc (2004) 0.00 
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    Content
    Wer über Ontologien und Ontologiesysteme spricht, sollte auch das System OpenCyc kennen. Aber was heißt hier "kennen"? Ich habe mich als Leser und experimentierender Benutzer mit diesem System intensiver befasst und unter einer Reihe von spezielleren Fragen an das System meine Erfahrungen in einigen Arbeitspapieren protokolliert. Sie sind über das Internet zugänglich'. Hier möchte ich der allgemeinen Orientierung über OpenCyc dienende Anmerkungen dazugeben. Bereits eine Recherche mit der Suchmaschine Google, den Suchworten "Cyc OpenCyc" und Beschränkung der Quellen auf Sprache Deutsch oder Herkunft Deutschland erbringt einige der auch hier wiedergegebenen vordergründigen Informationen, sie zeigt aber auch, dass sich Professoren oder Studenten im Jahr 2003 z.B. in Ulm, Heidelberg, Berlin, Bamberg, Bonn und Darmstadt mit dem Thema Cyc und OpenCyc beschäftigt haben entsprechend meiner Titelthese.
  13. Assem, M. van; Menken, M.R.; Schreiber, G.; Wielemaker, J.; Wielinga, B.: ¬A method for converting thesauri to RDF/OWL (2004) 0.00 
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    Date
    29. 7.2011 14:44:56
  14. Priss, U.: Faceted information representation (2000) 0.00 
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    Date
    22. 1.2016 17:47:06
  15. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie (2005) 0.00 
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    Date
    11. 2.2011 18:22:58
  16. Wielinga, B.; Wielemaker, J.; Schreiber, G.; Assem, M. van: Methods for porting resources to the Semantic Web (2004) 0.00 
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    29. 7.2011 14:44:56
  17. Vallet, D.; Fernández, M.; Castells, P.: ¬An ontology-based information retrieval model (2005) 0.00 
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    Source
    The Semantic Web: research and applications ; second European Semantic WebConference, ESWC 2005, Heraklion, Crete, Greece, May 29 - June 1, 2005 ; proceedings. Eds.: A. Gómez-Pérez u. J. Euzenat
  18. Matuszek, C.; Cabral, J.; Witbrock, M.; DeOliveira, J.: ¬An introduction to the syntax and content of Cyc (2006) 0.00 
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    Source
    Formalizing and compiling background knowledge and its applications to knowledge representation and question answering : papers from the AAAI spring symposium ; [March 27 - 29, 2006, Stanford, California] / Chitta Baral, chair
  19. Gendt, M. van; Isaac, I.; Meij, L. van der; Schlobach, S.: Semantic Web techniques for multiple views on heterogeneous collections : a case study (2006) 0.00 
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    Source
    Research and advanced technology for digital libraries : 10th European conference, proceedings / ECDL 2006, Alicante, Spain, September 17 - 22, 2006
  20. Renear, A.H.; Wickett, K.M.; Urban, R.J.; Dubin, D.; Shreeves, S.L.: Collection/item metadata relationships (2008) 0.00 
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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

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