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Displaying 1-39 out of 39 total
Optimized Index Structures for Querying RDF from the Web
Found in: Web Congress, Latin American
By Andreas Harth, Stefan Decker
Issue Date:November 2005
pp. 71-80
Storing and querying Resource Description Framework (RDF) data is one of the basic tasks within any Semantic Web application. A number of storage systems provide assistance for this task. However, current RDF database systems do not use optimized indexes, ...
 
Where Are the Rules?
Found in: IEEE Intelligent Systems
By Ian Horrocks, Jürgen Angele, Stefan Decker, Michael Kifer, Benjamin Grosof, Gerd Wagner
Issue Date:September 2003
pp. 76-83
<div>Rules for the Semantic Web</div><div>It Rules!</div><div>Semantic Rules</div><div>The Semantic Web Needs a Logic for Rules and Objects</div><div>Rules and RuleML in the Semantic Web</div><...
 
Framework for the Semantic Web: An RDF Tutorial
Found in: IEEE Internet Computing
By Stefan Decker, Prasenjit Mitra, Sergey Melnik
Issue Date:November 2000
pp. 68-73
RDF provides a data model that supports fast integration of data sources by bridging semantic differences.
 
Towards a semantic representation for multi-scale finite element biosimulation experiments
Found in: 2013 IEEE 13th International Conference on Bioinformatics and Bioengineering (BIBE)
By Andre Freitas,Margaret Jones,Kartik Asooja,Christos Bellos,Steve Elliott,Stefan Stenfelt,Panagiotis Hasapis,Christos Georgousopoulos,Torsten Marquardt,Nenad Filipovic,Stefan Decker,Ratnesh Sahay
Issue Date:November 2013
pp. 1-5
Biosimulation researchers use a variety of models, tools and languages for capturing and processing different aspects of biological processes. However, current modeling methods do not capture the underlying semantics of the biosimulation models sufficientl...
   
The Future of Social Networks on the Internet: The Need for Semantics
Found in: IEEE Internet Computing
By John Breslin, Stefan Decker
Issue Date:November 2007
pp. 86-90
Fundamental problems with today's social networking services block their potential to access the full range of available content and networked people online. A possible solution is to build semantic social networking into the fabric of the next-generation ...
 
A Scalable and Ontology-Based P2P Infrastructure for Semantic Web Services
Found in: Peer-to-Peer Computing, IEEE International Conference on
By Mario Schlosser, Michael Sintek, Stefan Decker, Wolfgang Nejdl
Issue Date:September 2002
pp. 104
Semantic Web Services are a promising combination of Semantic Web and Web service technology, aiming at providing means of automatically executing, discovering and composing semantically marked-up Web services. We envision peer-to-peer networks which allow...
 
Guest Editors' Introduction: Intelligent Web Services
Found in: IEEE Intelligent Systems
By Alun Preece, Stefan Decker
Issue Date:January 2002
pp. 15-17
No summary available.
 
Creating Semantic Web Contents with Protégé-2000
Found in: IEEE Intelligent Systems
By Natalya F. Noy, Michael Sintek, Stefan Decker, Monica Crubézy, Ray W. Fergerson, Mark A. Musen
Issue Date:March 2001
pp. 60-71
<p>One of the most recent trends in the evolution of the World Wide Web is the growing awareness of the need for a Semantic Web, a Web of information that machines can understand and process. The requirement to encode machine-interpretable informatio...
 
Fine-Grained Trust Assertions for Privacy Management in the Social Semantic Web
Found in: 2013 12th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom)
By Owen Sacco,John G. Breslin,Stefan Decker
Issue Date:July 2013
pp. 218-225
Social Web applications are engineered around users sharing personal information with their connected peers. They provide generic privacy settings which user specify with whom their information can be shared. However, this does not model the real world whe...
 
An Access Control Framework for the Web of Data
Found in: IEEE TrustCom/IEEE ICESS/FCST, International Joint Conference of
By Owen Sacco,Alexandre Passant,Stefan Decker
Issue Date:November 2011
pp. 456-463
As open data formats are becoming popular amongst Web developers, this gives rise to an increase in the creation and consumption of structured data. Data creators are easily linking diverse datasets which is creating a graph of interlinked data called the ...
 
Federating Distributed Social Data to Build an Interlinked Online Information Society
Found in: IEEE Intelligent Systems
By Alexandre Passant, Matthias Samwald, John G. Breslin, Stefan Decker
Issue Date:November 2009
pp. 44-48
<p>Applying semantic technologies to social media can result in an interlinked online information society where social data becomes part of a worldwide, collective intelligence ecosystem.</p>
 
Review and Alignment of Tag Ontologies for Semantically-Linked Data in Collaborative Tagging Spaces
Found in: International Conference on Semantic Computing
By Hak Lae Kim, Alexandre Passant, John G. Breslin, Simon Scerri, Stefan Decker
Issue Date:August 2008
pp. 315-322
As the number of Web 2.0 sites offering tagging facilities for the users' voluntary content annotation increases, so do the efforts to analyze social phenomena resulting from generated tagging and folksonomies. Most of these efforts provide different views...
 
Tight Coupling of Personal Interests with Multi-dimensional Visualization for Exploration and Analysis of Text Collections
Found in: Information Visualisation, International Conference on
By VinhTuan Thai, Siegfried Handschuh, Stefan Decker
Issue Date:July 2008
pp. 221-226
In this paper, we present an interactive matrix-based multi-dimensional visualization component which enables the users to explore a text collection along different conceptual dimensions. Of importance in our approach are the tight coupling of the users' p...
 
Four Heuristics to Guide Structured Content Crawling
Found in: Web Engineering, International Conference on
By Jürgen Umbrich, Andreas Harth, Aidan Hogan, Stefan Decker
Issue Date:July 2008
pp. 196-202
Search engines focusing on particular media types face difficulties in discovering suitable URIs on the Web. Since the engines are only interested in a small fraction of the Web, a crawler should use heuristics to concentrate on that fraction. To devise su...
 
An Interactive Map of Semantic Web Ontology Usage
Found in: Information Visualisation, International Conference on
By Sheila Kinsella, Uldis Bojars, Andreas Harth, John G. Breslin, Stefan Decker
Issue Date:July 2008
pp. 179-184
Publishing information on the Semantic Web using common formats enables data to be linked together, integrated and reused. In order to fully leverage the potential for interlinking data by reusing existing schemas, an intuitive way of viewing current usage...
 
Interlinking the Social Web with Semantics
Found in: IEEE Intelligent Systems
By Uldis Bojārs, John G. Breslin, Vassilios Peristeras, Giovanni Tummarello, Stefan Decker
Issue Date:May 2008
pp. 29-40
One of the most visible trends on the Web is the emergence of Social Web sites, which help people create and gather knowledge by simplifying user contributions via blogs, tagging and folksonomies, wikis, podcasts, and online social networks. Current online...
 
A Context-Aware Resource Recommendation System for Business Collaboration
Found in: E-Commerce Technology, IEEE International Conference on, and Enterprise Computing, E-Commerce, and E-Services, IEEE International Conference on
By Ke Ning, Ruinan Gong, Stefan Decker, Yuliu Chen, David O'sullivan
Issue Date:July 2007
pp. 457-460
Knowledge workers rely on collaboration with a large number of knowledge. Even highly experienced knowledge workers find it difficult to keep up to date with resources available to help them complete a particular goal. This paper proposed a Context-Aware R...
 
Semantic Documentation Using Semantic Web Technologies and Social Web Services
Found in: Next Generation Web Services Practices, International Conference on
By Hak Lae Kim, Hong Gee Kim, Stefan Decker
Issue Date:September 2006
pp. 27-32
In this paper we discuss the need to interact both Desktop and Web environments for making semantic documentation and the advantages of using Semantic Web technologies and Social Web Services. We propose the architecture and then describe the prototype sys...
 
Towards SemanticWeb Services in Grid Environments
Found in: Semantics, Knowledge and Grid, International Conference on
By Ioan Toma, Dumitru Roman, Kashif Iqbal, Dieter Fensel, Stefan Decker, Juergen Hofer
Issue Date:November 2005
pp. 107
Web services and Grid computing are technologies with a great impact these days. Both technologies are taking a syntactical based approach to describe services, and therefore, limited support is provided for service related tasks like: discovery, compositi...
 
On P2P Collaboration Infrastructures
Found in: Enabling Technologies, IEEE International Workshops on
By Manfred Hauswirth, Ivana Podnar, Stefan Decker
Issue Date:June 2005
pp. 66-71
BSCW [8] and Groove [10] have become the two defacto standards for collaboration over the Internet. They offer a wealth of functionalities, support a variety of possible collaboration styles, and are applied frequently in research and business projects. Wh...
 
The Semantic Web: The Roles of XML and RDF
Found in: IEEE Internet Computing
By Stefan Decker, Sergey Melnik, Frank Van Harmelen, Dieter Fensel, Michel Klein, Jeen Broekstra, Michael Erdmann, Ian Horrocks
Issue Date:September 2000
pp. 63-74
<p>XML and RDF are the current standards for establishing semantic interoperability on the Web, but XML addresses only document structure. RDF better facilitates interoperation because it provides a data model that can be extended to address sophisti...
 
Querying phenotype-genotype associations across multiple knowledge bases using Semantic Web technologies
Found in: 2013 IEEE 13th International Conference on Bioinformatics and Bioengineering (BIBE)
By Oya Deniz Beyan,Aftab Iqbal,Yasar Khan,Athos Antoniades,John Keane,Panagiotis Hasapis,Christos Georgousopoulos,Myrto Ioannidi,Stefan Decker,Ratnesh Sahay
Issue Date:November 2013
pp. 1-5
Biomedical and genomic data are inherently heterogeneous and their recent proliferation over the Web has demanded innovative querying methods to help domain experts in their clinical and research studies. In this paper we present the use of Semantic Web te...
   
Linked cancer genome atlas database
Found in: Proceedings of the 9th International Conference on Semantic Systems (I-SEMANTICS '13)
By Axel-Cyrille Ngonga Ngomo, Helena F. Deus, Jonas S. Almeida, Muhammad Saleem, Shanmukha S. Padmanabhuni, Stefan Decker
Issue Date:September 2013
pp. 129-134
The Cancer Genome Atlas (TCGA) is a multidisciplinary, multi-institutional pilot project to create an atlas of genetic mutations responsible for cancer. One of the aims of this project is to develop an infrastructure for making the cancer related data publ...
     
Arguments about deletion: how experience improves the acceptability of arguments in ad-hoc online task groups
Found in: Proceedings of the 2013 conference on Computer supported cooperative work (CSCW '13)
By Alexandre Passant, Jodi Schneider, Krystian Samp, Stefan Decker
Issue Date:February 2013
pp. 1069-1080
Increasingly, ad-hoc online task groups must make decisions about jointly created artifacts such as open source software and Wikipedia articles. Time-consuming and laborious attention to textual discussions is needed to make such decisions, for which compu...
     
A dual-mode user interface for accessing 3D content on the world wide web
Found in: Proceedings of the 21st international conference on World Wide Web (WWW '12)
By Jacek Jankowski, Stefan Decker
Issue Date:April 2012
pp. 1047-1056
The Web evolved from a text-based system to the current rich and interactive medium that supports images, 2D graphics, audio and video. The major media type that is still missing is 3D graphics. Although various approaches have been proposed (most notably ...
     
Supporting menu design with radial layouts
Found in: Proceedings of the International Conference on Advanced Visual Interfaces (AVI '10)
By Krystian Samp, Stefan Decker
Issue Date:May 2010
pp. 155-162
One of the ways of decreasing selection times in displayed menus is through the use of radial layouts which shorten distances to the items and increase the item sizes. Previous work on radial menus does not demonstrate that radial layouts are beneficial fo...
     
Integrating text with video and 3D graphics: documenting patient encounter during trauma resuscitation
Found in: Proceedings of the 28th international conference on Human factors in computing systems (CHI '10)
By Izabela Irzynska, Jacek Jankowski, Krystian Samp, Marek Jozwowicz, Stefan Decker
Issue Date:April 2010
pp. 1321-1330
There have been many studies of computer based text reading. However, only a few have considered text integrated with video and 3D graphics. This paper presents an investigation into the effects of varying (a) text drawing style (plain, billboard, Anti-Int...
     
3DWiki: the 3D Wiki engine
Found in: Proceedings of the 5th International Symposium on Wikis and Open Collaboration (WikiSym '09)
By Bill McDaniel, Jacek Jankowski, Marek Jozwowicz, Stefan Decker, Yolanda Cobos
Issue Date:October 2009
pp. 1-2
We demonstrate one of the potential paths of the evolution of wiki engines towards Web 3.0. We introduce 3dWiki - the 3D wiki engine, which was built according to 2-Layer Interface Paradigm (2LIP). It was developed for use by Copernicus, our vision of a 3D...
     
2LIP: filling the gap between the current and the three-dimensional web
Found in: Proceedings of the 14th International Conference on 3D Web Technology (Web3D '09)
By Jacek Jankowski, Stefan Decker
Issue Date:June 2009
pp. 1-44
In this article we present a novel approach, the 2-Layer Interface Paradigm (2LIP), for designing simple yet interactive 3D web applications, an attempt to marry advantages of 3D experience with the advantages of the narrative structure of hypertext. The h...
     
The 2LIP model and its implementations
Found in: Proceedings of the 20th ACM conference on Hypertext and hypermedia (HT '09)
By Jacek Jankowski, Stefan Decker
Issue Date:June 2009
pp. 70-73
In this article we present a model for 2-Layer Interface Paradigm (2LIP). 2LIP is an approach for designing simple yet interactive 3D web applications, an attempt to marry advantages of 3D experience with the advantages of the narrative structure of hypert...
     
2LIPGarden: 3D hypermedia for everyone
Found in: Proceedings of the 20th ACM conference on Hypertext and hypermedia (HT '09)
By Bill McDaniel, Izabela Irzynska, Jacek Jankowski, Stefan Decker
Issue Date:June 2009
pp. 70-73
The early Web was hailed for being easy to use, and what is more important, giving people a chance to participate in its growth. The Web3D was believed to have potential to be the next step in the Web's evolution, since it could benefit from graphics hardw...
     
Towards a scalable search and query engine for the web
Found in: Proceedings of the 16th international conference on World Wide Web (WWW '07)
By Aidan Hogan, Andreas Harth, Jurgen Umrich, Stefan Decker
Issue Date:May 2007
pp. 1301-1302
Current search engines do not fully leverage semantically rich datasets, or specialise in indexing just one domain-specific dataset.We present a search engine that uses the RDF data model to enable interactive query answering over richly structured and int...
     
ActiveRDF: object-oriented semantic web programming
Found in: Proceedings of the 16th international conference on World Wide Web (WWW '07)
By Armin Haller, Eyal Oren, Renaud Delbru, Sebastian Gerke, Stefan Decker
Issue Date:May 2007
pp. 817-824
Object-oriented programming is the current mainstream programming paradigm but existing RDF APIs are mostly triple-oriented. Traditional techniques for bridging a similar gap between relational databases and object-oriented programs cannot be applied direc...
     
How semantics make better wikis
Found in: Proceedings of the 15th international conference on World Wide Web (WWW '06)
By Eyal Oren, John G. Breslin, Stefan Decker
Issue Date:May 2006
pp. 1071-1072
Wikis are popular collaborative hypertext authoring environments, but they neither support structured access nor information reuse. Adding semantic annotations helps to address these limitations. We present an architecture for Semantic Wikis and discuss de...
     
Graphical representation of RDF queries
Found in: Proceedings of the 15th international conference on World Wide Web (WWW '06)
By Andreas Harth, Sebastian Ryszard Kruk, Stefan Decker
Issue Date:May 2006
pp. 859-860
In this poster we discuss a graphical notation for representing queries for semistructured data. We try to strike a balance between expressiveness of the query language and simplicity and understandability of the graphical notation. We present the primitiv...
     
A semantic matchmaker service on the grid
Found in: Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters (WWW Alt. '04)
By Andreas Harth, Carl Kesselman, Hongsuda Tangmunarunkit, Stefan Decker, Yu He
Issue Date:May 2004
pp. 326-327
A fundamental task on the Grid is to decide what jobs to run on what computing resources based on job or application requirements. Our previous work on ontology-based matchmaking discusses a resource matchmaking mechanism using Semantic Web technologies. W...
     
Description logic programs: combining logic programs with description logic
Found in: Proceedings of the twelfth international conference on World Wide Web (WWW '03)
By Benjamin N. Grosof, Ian Horrocks, Raphael Volz, Stefan Decker
Issue Date:May 2003
pp. 48-57
We show how to interoperate, semantically and inferentially, between the leading Semantic Web approaches to rules (RuleML Logic Programs) and ontologies (OWL/DAML+OIL Description Logic) via analyzing their expressive intersection. To do so, we define a new...
     
EDUTELLA: a P2P networking infrastructure based on RDF
Found in: Proceedings of the eleventh international conference on World Wide Web (WWW '02)
By Ambjorn Naeve, Boris Wolf, Changtao Qu, Matthias Palmer, Michael Sintek, Mikael Nilsson, Stefan Decker, Tore Risch, Wolfgang Nejdl
Issue Date:May 2002
pp. 604-615
Metadata for the World Wide Web is important, but metadata for Peer-to-Peer (P2P) networks is absolutely crucial. In this paper we discuss the open source project Edutella which builds upon metadata standards defined for the WWW and aims to provide an RDF-...
     
Enabling knowledge representation on the Web by extending RDF schema
Found in: Proceedings of the tenth international conference on World Wide Web (WWW '01)
By Dieter Fensel, Frank van Harmelen, Ian Horrocks, Jeen Broekstra, Michel Klein, Stefan Decker
Issue Date:May 2001
pp. 467-478
This paper describes the challenges faced by designers in creating accessible systems for the elderly. CARSE, an assessment tool, which has been synthesized and empirically validated of the semantic efficacy of interface metaphor, is used to evaluate two s...
     
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