%0 
%0 Conference Proceedings
%A Hoser, Bettina; Hotho, Andreas; Jäschke, Robert; Schmitz, Christoph & Stumme, Gerd
%D 2006
%T Semantic Network Analysis of Ontologies
%E Sure, York & Domingue, John
%B The Semantic Web: Research and Applications
%C Heidelberg
%I Springer
%V 4011
%6
%N 
%P 514-529
%& 
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%S LNAI
%7
%8 June
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%F hoser2006semantic
%K 2006, l3s, myown, nepomuk, ontology, semantic, sna, socialnetworkanalysis, sota, web
%X A key argument for modeling knowledge in ontologies is the easy
re-use and re-engineering of the knowledge. However, beside
consistency checking, current ontology engineering tools provide
only basic functionalities for analyzing ontologies. Since
ontologies can be considered as (labeled, directed) graphs, graph
analysis techniques are a suitable answer for this need. Graph
analysis has been performed by sociologists for over 60 years, and
resulted in the vivid research area of Social Network Analysis
(SNA). While social network structures in general currently receive
high attention in the Semantic Web community, there are only very
few SNA applications up to now, and virtually none for analyzing the
structure of ontologies.

We illustrate in this paper the benefits of applying SNA to
ontologies and the Semantic Web, and discuss which research topics
arise on the edge between the two areas. In particular, we discuss
how different notions of centrality describe the core content and
structure of an ontology. From the rather simple notion of degree
centrality over betweenness centrality to the more complex
eigenvector centrality based on Hermitian matrices, we illustrate
the insights these measures provide on two ontologies, which are
different in purpose, scope, and size.
%Z 
%U http://www.kde.cs.uni-kassel.de/stumme/papers/2006/hoser2006semantic.pdf
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%0 
%0 Journal Article
%A Cimiano, Philipp; Hotho, Andreas & Staab, Steffen
%D 2005
%T Learning Concept Hierarchies from Text Corpora using Formal Concept Analysis
%E 
%B Journal on Artificial Intelligence Research
%C 
%I 
%V 24
%6
%N 
%P 305-339
%& 
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%F cimiano05learning
%K analysis, concept, fca, formal, hierarchies, hierarchy, learning, ontologies, ontology, text
%X 
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%U http://dblp.uni-trier.de/db/journals/jair/jair24.html#CimianoHS05
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%0 
%0 Conference Proceedings
%A Stumme, Gerd
%D 2005
%T Ontology Merging with Formal Concept Analysis
%E Kalfoglou, Yannis; Schorlemmer, W. Marco; Sheth, Amit P.; Staab, Steffen & Uschold, Michael
%B Semantic Interoperability and Integration
%C 
%I IBFI, Schloss Dagstuhl, Germany
%V 04391
%6
%N 
%P 
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%S Dagstuhl Seminar Proceedings
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%F conf/dagstuhl/Stumme05
%K 2005, itegpub, l3s, merging, myown, ontology
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%Z 
%U http://www.kde.cs.uni-kassel.de/stumme/papers/2005/stumme2005ontology.pdf
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%0 
%0 Conference Proceedings
%A Ganter, Bernhard & Stumme, Gerd
%D 2003
%T Creation and Merging of Ontology Top-Levels
%E de Moor, Aldo; Lex, Wilfried & Ganter, Bernhard
%B Conceptual Structures for Knowledge Creation and Communication.
%C Heidelberg
%I Springer
%V 2746
%6
%N 
%P 131-145
%& 
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%S LNAI
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%F ganter03creation
%K 2003, analysis, concept, fca, formal, merging, myown, ontologies, ontology
%X We provide a new method for systematically structuring the top-down level of ontologies.
It is based on an interactive, top--down knowledge acquisition
process, which assures that the knowledge engineer
considers all possible cases while avoiding redundant acquisition.
The method is suited especially for creating/merging the top
part(s) of the ontologies, where high accuracy is required, and for supporting the merging of two (or more) ontologies on that level.
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%U http://www.kde.cs.uni-kassel.de/stumme/papers/2003/ganter2003creation.pdf
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%0 
%0 Conference Proceedings
%A Tane, Julien; Schmitz, Christoph; Stumme, Gerd; Staab, Steffen & Studer, R.
%D 2003
%T The Courseware Watchdog:  an Ontology-based tool for finding and organizing
                  learning material
%E David, Klaus & Wegner, Lutz
%B Mobiles Lernen und Forschen - Beiträge der Fachtagung an der Universität
%C 
%I Kassel University Press
%V 
%6
%N 
%P 93-104
%& 
%Y 
%S 
%7
%8 November
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%3 inproceedings
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%F tane03courseware
%K 2003, analysis, concept, courseware, crawling, e-learning, eLearning, edutella, fca, formal, myown, ontologies, ontology, p2p, padlr, watchdog
%X Topics in education are changing with an ever faster pace. E-Learning
resources tend to be more and more decentralised. Users need increasingly to be able to
use the resources of the web. For this, they should have tools for finding and organizing
information in a decentral way. In this, paper, we show how an ontology-based tool
suite allows to make the most of the resources available on the web.
%Z 
%U http://www.kde.cs.uni-kassel.de/stumme/papers/2003/tane2003courseware.pdf
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%0 
%0 Report
%A Fernandez-Lopez, Mariano; Gomez-Perez, Asun; Euzenat, Jerome; Gangemi, Aldo; Kalfoglou, Y.; Pisanelli, D.; Schorlemmer, M.; Steve, G.; Stojanovic, Ljilajana; Stumme, Gerd & Sure, York
%D 2002
%T A survey on methodologies for developing, maintaining, integration, evaluation and
                  reengineering ontologies
%E 
%B 
%C 
%I Universidad Politecnia de Madrid
%V 
%6
%N 
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%9 OntoWeb deliverable
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%F fernandez02survey
%K 2002, engineering, integration, merging, myown, ontologies, ontology
%X 
%Z 
%U http://www.kde.cs.uni-kassel.de/stumme/papers/2002/OntoWeb_Del_1-4.pdf
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%0 
%0 Journal Article
%A Staab, Steffen; Studer, Rudi; Schnurr, Hans-Peter & Sure, York
%D 2001
%T Knowledge Processes and Ontologies
%E 
%B IEEE Intelligent Systems
%C 
%I IEEE Educational Activities Department
%V 16
%6
%N 1
%P 26--34
%& 
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%2 Knowledge Processes and Ontologies
%3 article
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%$ 
%F 630607
%K ontology
%X Increases in product complexity, the move toward globalization, the emergence of virtual organizations, and the increase in focus on customer orientation all demand a more thorough and systematic approach to managing knowledge. Knowledge management is a major issue for human resource management, enterprise organization, and enterprise culture. But IT plays a major supporting role in managing knowledge.The authors present an approach for ontology-based knowledge management that includes a suite of tools as well as a methodology for developing ontology-based KM systems. Their approach builds on the distinction between knowledge process and knowledge metaprocess. They illustrate their methodology with CHAR, a knowledge management system for corporate history analysis.The challenges lie in analyzing KM processes and dynamically updating the KM solution. The authors' framework is designed to help leverage these evolving systems by providing a concise view of the problem.
%Z 
%U http://portal.acm.org/citation.cfm?id=630607
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%0 
%0 Conference Proceedings
%A Stumme, G. & Maedche, A.
%D 2001
%T FCA-Merge: Bottom-Up Merging of Ontologies.
%E Nebel, B.
%B Proc. 17th Intl. Conf. on Artificial Intelligence (IJCAI '01)
%C Seattle, WA, USA
%I 
%V 
%6
%N 
%P 225-230
%& 
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%F stumme01bottom
%K 2001, analysis, concept, fca, formal, merging, myown, ontologies, ontology, semantic, web
%X 
%Z 
%U http://www.kde.cs.uni-kassel.de/stumme/papers/2001/IJCAI01.pdf
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%0 
%0 Generic
%A of Standardization, International Organization
%D 2000
%T ISO 704. Terminology Work - Principles and Methods
%E
%B 
%C
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%3 misc
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%F ISO704
%K DIN, ISO, concept, concepts, din, iso, ontologies, ontology, terminology
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%0 Conference Proceedings
%A Stumme, G.; Studer, R. & Sure, Y.
%D 2000
%T Towards an Order-Theoretical Foundation for Maintaining and Merging Ontologies
%E Bodendorf, F. & Grauer, M.
%B Verbundtagung Wirtschaftsinformatik 2000
%C Aachen
%I Shaker
%V 
%6
%N 
%P 136-149
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%F stumme00towardsanorder
%K 2000, analysis, concept, fca, formal, merging, myown, ontologies, ontology, semantic, web
%X 
%Z 
%U http://www.kde.cs.uni-kassel.de/stumme/papers/2000/REFMOD00.pdf
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