Stefan Decker

ORCID: 0000-0001-6324-7164
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Semantic Web and Ontologies
  • Service-Oriented Architecture and Web Services
  • Advanced Database Systems and Queries
  • Biomedical Text Mining and Ontologies
  • Data Quality and Management
  • Web Data Mining and Analysis
  • Scientific Computing and Data Management
  • Natural Language Processing Techniques
  • Advancements in Semiconductor Devices and Circuit Design
  • Semiconductor materials and devices
  • Privacy-Preserving Technologies in Data
  • Business Process Modeling and Analysis
  • Research Data Management Practices
  • Recommender Systems and Techniques
  • Personal Information Management and User Behavior
  • Bioinformatics and Genomic Networks
  • Silicon Carbide Semiconductor Technologies
  • Peer-to-Peer Network Technologies
  • Data Management and Algorithms
  • Topic Modeling
  • Access Control and Trust
  • Knowledge Management and Sharing
  • Distributed and Parallel Computing Systems
  • Logic, Reasoning, and Knowledge
  • Caching and Content Delivery

Fraunhofer Institute for Applied Information Technology
2016-2024

RWTH Aachen University
2016-2024

University Hospital Cologne
2024

University of Cologne
2024

Inform (Germany)
2019-2021

Maxim Integrated (United Kingdom)
2021

Universitätsbibliothek Johann Christian Senckenberg
2021

Fraunhofer Society
2020

University of Duisburg-Essen
2020

Ollscoil na Gaillimhe – University of Galway
2008-2019

As researchers continue to create new languages in the hope of developing a Semantic Web, they still lack consensus on standard. The authors describe how Protege-2000, tool for ontology development and knowledge acquisition, can be adapted editing models different Web languages.

10.1109/5254.920601 article EN IEEE Intelligent Systems 2001-03-01

We show how to interoperate, semantically and inferentially, between the leading Semantic Web approaches rules (RuleML Logic Programs) ontologies (OWL/DAML+OIL Description Logic) via analyzing their expressive intersection. To do so, we define a new intermediate knowledge representation (KR) contained within this intersection: Programs (DLP), closely related Horn (DHL) which is an fragment of first-order logic (FOL). DLP provides significant degree expressiveness, substantially greater than...

10.2139/ssrn.460986 article EN SSRN Electronic Journal 2003-01-01

Metadata for the World Wide Web is important, but metadata Peer-to-Peer (P2P) networks absolutely crucial. In this paper we discuss open source project Edutella which builds upon standards defined WWW and aims to provide an RDF-based infrastructure P2P applications, building on recently announced JXTA Framework. We describe goals main services will architecture connect Peers based exchange of RDF metadata. As query service one core Edutella, other are built, specify in detail Common Data...

10.1145/511446.511525 article EN 2002-05-07

XML and RDF are the current standards for establishing semantic interoperability on Web, but addresses only document structure. better facilitates interoperation because it provides a data model that can be extended to address sophisticated ontology representation techniques. We explain role of ontologies in architecture Semantic Web. then briefly summarize key elements RDF, showing why using as tool will ineffective long run. argue further inference layer is needed top Web's layers,...

10.1109/4236.877487 article EN IEEE Internet Computing 2000-01-01

In this paper <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> , we proposed an explainable deep neural networks (DNN)-based method for automatic detection of COVID-19 symptoms from chest radiography (CXR) images, which call 'DeepCOVIDExplainer'. We used 15,959 CXR images 15,854 patients, covering normal, pneumonia, and cases. are first comprehensively preprocessed augmented before classifying with a ensemble method, followed by...

10.1109/bibm49941.2020.9313304 article EN 2021 IEEE International Conference on Bioinformatics and Biomedicine (BIBM) 2020-12-16

We show how to interoperate, semantically and inferentially, between the leading Semantic Web approaches rules (RuleML Logic Programs) ontologies (OWL/DAML+OIL Description Logic) via analyzing their expressive intersection. To do so, we define a new intermediate knowledge representation (KR) contained within this intersection: Programs (DLP), closely related Horn (DHL) which is an fragment of first-order logic (FOL). DLP provides significant degree expressiveness, substantially greater than...

10.1145/775152.775160 article EN 2003-01-01

Storing and querying resource description framework (RDF) data is one of the basic tasks within any semantic Web application. A number storage systems provide assistance for this task. However, current RDF database do not use optimized indexes, which results in a poor performance behavior RDF. In paper we describe index structures RDF, show how to process evaluate queries based on structure, lightweight adaptable implementation Java, comparison with existing databases.

10.1109/laweb.2005.25 article EN 2006-03-10

Everyone on the Internet knows buzzword social networking. Social networking services (SNS) usually offer same basic functionalities: network of friends listings, person surfing, private messaging etc. With such features, SNSs demonstrate how continues to better connect people for various and professional purposes. The fundamental problems with today's block their potential access full range available content networked online. A possible solution is build semantic into fabric next-generation...

10.1109/mic.2007.138 article EN IEEE Internet Computing 2007-11-01

Semantic Web Services are a promising combination of and service technology, aiming at providing means automatically executing, discovering composing semantically marked-up services. We envision peer-to-peer networks which allow for carrying out searches in real-time on permanently reconfiguring to be an ideal infrastructure deploying network Service providers. However, P2P evolving unorganized manner suffer from serious scalability problems, limiting the number nodes network, creating...

10.1109/ptp.2002.1046319 article EN 2003-06-25

Summary Introduction: This article is part of the Focus Theme Methods Information in Medicine on German Medical Informatics Initiative. “Smart Technology for Healthcare (SMITH)” one four consortia funded by Initiative (MI-I) to create an alliance universities, university hospitals, research institutions and IT companies. SMITH’s goals are establish Data Integration Centers (DICs) at each SMITH partner hospital implement use cases which demonstrate usefulness approach. Objectives: To give...

10.3414/me18-02-0004 article EN cc-by-nc-nd Methods of Information in Medicine 2018-07-01
Coming Soon ...