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Searching for authors named Vassilis Christophides – sorted by Relevance.

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  • From Relational To Object Database Management Systems  
  • by Christophides Vassilis, Christophides Vassilis Uch/forth, Christophides Vassilis Uch/forth
  • …1878-1935 Russia #4 Alberto Giacometti Surrealism 1901-1966. Swiss ... ... ... ... ... PAINTING Code Painter Name Material Date Museum #1 #2 Haystacks at Chailly at Sunrise Oil on canvas 1865 San Diego Museum of Art #2 #2 Wheatstacks (End of Summer) Oil on canvas 189091 The Art Institute of Chic…
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  • 2 * '9*+ /  
  • by Vassilis Christophides, Juliana Freire
  • …, &, 8 5. ( *…
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  • Querying heterogeneous data in Aquarelle project  
  • by V. Christophides, Vassilis Christophides, Marco Padula, Michel Scholl — 1997
  • …The Aquarelle project aims at developing a distributed multimedia information system, offering access to information describing and documenting European cultural heritage such as painting, sculptures, historical sites and monuments, musical instruments and furniture. Cultural information, is current…
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  • On Personalizing the Catalogs of Web Portals  
  • by Nicolas Spyratos, Yannis Tzitzikas, Vassilis Christophides — 2002 — In Proc. of the Special Track on the Semantic Web at the 15th Inter. FLAIRS'02 Conf
  • …In this paper we propose a method for personalizing the catalogs of Web Portals. We propose SCSL, a declarative language for defining personal semantic channels over Web Portal catalogs. A semantic channel is actually a view of one or more Portal catalogs. SCSL offers powerful primitives for fi…
  • Cited by 7 (3 self) – Add To MetaCart
  • Containment and minimization of RDF/S query patterns  
  • by Giorgos Serfiotis, Ioanna Koffina, Vassilis Christophides, Val Tannen — 2005 — In Proc. of the International Semantic Web Conference (ISWC
  • …Abstract. Semantic query optimization (SQO) has been proved to be quite useful in various applications (e.g., data integration, graphical query generators, caching, etc.) and has been extensively studied for relational, deductive, object, and XML databases. However, less attention to SQO has been de…
  • Cited by 2 (0 self) – Add To MetaCart
  • Declarative Languages for Querying Portal Catalogs  
  • by Vassilis Christophides, Dimitris Plexousakis, Greg Karvounarakis, Sofia Alexaki — 2000 — In Proc. DELOS Workshop: Information Seeking, Searching and Querying in Digital Libraries
  • …As data is increasingly captured, aggregated, and digitized worldwide, new types of information systems, such as digital libraries and information (subject) gateways, emerge as core technologies of the 21st-century economy. After a first generation of systems focusing on the accessibility of availab…
  • Cited by 7 (1 self) – Add To MetaCart
  • Declarative Specification of Z39.50 Wrappers using Description Logics  
  • by Yannis Velegrakis, Vassilis Christophides, Panos Constantopoulos — 1998 — Computer Science Institute
  • …Abstract. Z39.50 is a client/server protocol widely used in digital libraries and museums for searching and retrieving information spread over a number of heterogeneous sources. To overcome semantic and schematic discrepancies among the various data sources the protocol relies on a world view of inf…
  • Cited by 2 (2 self) – Add To MetaCart
  • Workflow Mediation Using VorteXML  
  • by Vassilis Christophides, Richard Hull, Akhil Kumar, Jerome Simeon — 2001 — IEEE Data Engineering Bulletin
  • …This paper presents an original framework for specifying, enacting and supervising e-services on the Web. This framework is based on XML and rules-based support for products/services description and workflow mediation across organizations…
  • Cited by 5 (2 self) – Add To MetaCart
  • A Semantic Network Approach to Semi-Structured Documents Repositories  
  • by Vassilis Christophides, Martin Dörr, Irene Fundulaki — In ERDL'97, Lecture Notes in Computer Science
  • …Using database technology for the administration of digital libraries offers many advantages in a multi-user and distributed environment. However, conventional DBMS are not particularly suited to manage semi-structured data with heterogeneous, irregular, evolving structures as in the case of SGML do…
  • Cited by 7 (4 self) – Add To MetaCart
  • Querying Community Web Portals  
  • by Gregory Karvounarakis, Vassilis Christophides, Dimitris Plexousakis, Sofia Alexaki — 2000
  • …Anewgeneration of information systems suchasorganizational memories, vertical aggregators, infomediaries, etc. is emerging nowadays. Such systems, termed CommunityWeb Portals, intend to support specific communities of interest (e.g., enterprise, professional, trading) on corporate intranets or th…
  • Cited by 7 (0 self) – Add To MetaCart
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