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. ER - TY - CONF AU - Kalyanpur, Aditya AU - Parsia, Bijan AU - Sirin, Evren AU - Grau, Bernardo Cuenca A2 - T1 - Repairing Unsatisfiable Concepts in OWL Ontologies. T2 - ESWC PB - CY - PY - 2006/ M2 - VL - IS - SP - 170 EP - 184 UR - M3 - KW - web KW - proceedings KW - 2006 KW - ontology KW - eswc KW - evolution KW - european KW - conference KW - semantic L1 - SN - N1 - DBLP Record 'conf/esws/KalyanpurPSG06' N1 - AB - ER - TY - CONF AU - Lei, Yuangui AU - Sabou, Marta AU - Lopez, Vanessa AU - Zhu, Jianhan AU - Uren, Victoria AU - Motta, Enrico A2 - T1 - An Infrastructure for Acquiring High Quality Semantic Metadata. T2 - ESWC PB - CY - PY - 2006/ M2 - VL - IS - SP - 230 EP - 244 UR - M3 - KW - web KW - proceedings KW - 2006 KW - learning KW - ontology KW - eswc KW - european KW - conference KW - semantic L1 - SN - N1 - DBLP Record 'conf/esws/LeiSLZUM06' N1 - AB - ER - TY - CONF AU - Novácek, Vt AU - Smrz, Pavel A2 - T1 - Empirical Merging of Ontologies - A Proposal of Universal Uncertainty Representation Framework. T2 - ESWC PB - CY - PY - 2006/ M2 - VL - IS - SP - 65 EP - 79 UR - M3 - KW - 2006 KW - proceedings KW - web KW - ontology KW - eswc KW - conference KW - european KW - alignment KW - semantic L1 - SN - N1 - DBLP Record 'conf/esws/NovacekS06' N1 - AB - ER - TY - CONF AU - Plessers, Peter AU - Troyer, Olga De A2 - T1 - Resolving Inconsistencies in Evolving Ontologies. T2 - ESWC PB - CY - PY - 2006/ M2 - VL - IS - SP - 200 EP - 214 UR - M3 - KW - web KW - proceedings KW - 2006 KW - ontology KW - eswc KW - evolution KW - european KW - conference KW - semantic L1 - SN - N1 - DBLP Record 'conf/esws/PlessersT06' N1 - AB - ER - TY - CONF AU - Schmitz, Christoph AU - Hotho, Andreas AU - Jäschke, Robert AU - Stumme, Gerd A2 - Sure, York A2 - Domingue, John T1 - Content Aggregation on Knowledge Bases using Graph Clustering T2 - The Semantic Web: Research and Applications PB - Springer CY - Heidelberg PY - 2006/ M2 - VL - 4011 IS - SP - 530 EP - 544 UR - http://www.kde.cs.uni-kassel.de/stumme/papers/2006/schmitz2006content.pdf M3 - KW - 2006 KW - aggregation KW - clustering KW - content KW - graph KW - itegpub KW - l3s KW - myown KW - nepomuk KW - ontologies KW - ontology KW - seminar2006 KW - theory L1 - SN - N1 - N1 - AB - Recently, research projects such as PADLR and SWAP
have developed tools like Edutella or Bibster, which are targeted at
establishing peer-to-peer knowledge management (P2PKM) systems. In
such a system, it is necessary to obtain provide brief semantic
descriptions of peers, so that routing algorithms or matchmaking
processes can make decisions about which communities peers should
belong to, or to which peers a given query should be forwarded.
This paper provides a graph clustering technique on
knowledge bases for that purpose. Using this clustering, we can show
that our strategy requires up to 58% fewer queries than the
baselines to yield full recall in a bibliographic P2PKM scenario. ER - TY - CONF AU - Serafini, Luciano AU - Zanobini, Stefano AU - Sceffer, Simone AU - Bouquet, Paolo A2 - T1 - Matching Hierarchical Classifications with Attributes. T2 - ESWC PB - CY - PY - 2006/ M2 - VL - IS - SP - 4 EP - 18 UR - M3 - KW - 2006 KW - proceedings KW - web KW - ontology KW - eswc KW - conference KW - european KW - alignment KW - semantic L1 - SN - N1 - DBLP Record 'conf/esws/SerafiniZSB06' N1 - AB - ER - TY - CONF AU - Tempich, Christoph AU - Pinto, Helena Sofia AU - Staab, Steffen A2 - T1 - Ontology Engineering Revisited: An Iterative Case Study. T2 - ESWC PB - CY - PY - 2006/ M2 - VL - IS - SP - 110 EP - 124 UR - M3 - KW - 2006 KW - proceedings KW - web KW - engineering KW - ontology KW - eswc KW - conference KW - european KW - semantic L1 - SN - N1 - DBLP Record 'conf/esws/TempichPS06' N1 - AB - ER - TY - CONF AU - van Assem, Mark AU - Malaisé, Véronique AU - Miles, Alistair AU - Schreiber, Guus A2 - Sure, York A2 - Domingue, John T1 - A Method to Convert Thesauri to SKOS. T2 - ESWC PB - Springer CY - PY - 2006/ M2 - VL - 4011 IS - SP - 95 EP - 109 UR - M3 - KW - 2006 KW - proceedings KW - web KW - engineering KW - ontology KW - eswc KW - conference KW - european KW - semantic L1 - SN - 3-540-34544-2 N1 - DBLP Record 'conf/esws/AssemMMS06' N1 - AB - ER - TY - CONF AU - Wang, Ting AU - Li, Yaoyong AU - Bontcheva, Kalina AU - Cunningham, Hamish AU - Wang, Ji A2 - T1 - Automatic Extraction of Hierarchical Relations from Text. T2 - ESWC PB - CY - PY - 2006/ M2 - VL - IS - SP - 215 EP - 229 UR - M3 - KW - web KW - proceedings KW - 2006 KW - learning KW - ontology KW - eswc KW - european KW - conference KW - semantic L1 - SN - N1 - DBLP Record 'conf/esws/WangLBCW06' N1 - AB - ER - TY - CONF AU - Zhdanova, Anna V. AU - Shvaiko, Pavel A2 - T1 - Community-Driven Ontology Matching. T2 - ESWC PB - CY - PY - 2006/ M2 - VL - IS - SP - 34 EP - 49 UR - M3 - KW - 2006 KW - proceedings KW - web KW - ontology KW - eswc KW - conference KW - european KW - alignment KW - semantic L1 - SN - N1 - DBLP Record 'conf/esws/ZhdanovaS06' N1 - AB - ER -