Steffen Metzger

Current business address

Email: PGP ID: 0x1EDC4C5F
PGP public key: public.asc

SWSRAT
Semantic Web Service Relevance Assessment Tool
A PHP based web application to support user assesments of semantic web services given service requests. Uses a MySQL database to store data. Based on service collections like SWASDL-TC 1.1 and OWLS-TC 1.1, the tool provides pairwise comparisons of service requests and service offers, maintains user judgements in different (graded) ranking scales and allows to export these assessments in different variations and with user-based filters as xml file.
SWSRAT has been developed jointly with MSc. Patrick Kapahnke and PD. Dr. Matthias Klusch at the German Research Center for Artificial Intelligence (DFKI) in the Intelligent Information Systems (I2S) research team. This work has been supported in part by the German ministry for education and research (BMBF) in the project MODEST. It is licenced under the Mozilla Public License version 1.1.
demo, source code available upon request, licence

October 2016 - present:
Senior Software Engineer at QAware GmbH, Munich, Germany
July 2014 - August 2016:
Associate (Senior since 04/2016) Java Developer at Bigpoint GmbH, Hamburg, Germany, as a member of the Seafight development team
January 2010 - April 2014:
Resarch Assistant (Computer Science) at the the Max-Planck-Institute for Informatics and associated with the Cluster of Excellence for Multimodal Computing and Interaction of the Universität des Saarlandes, Saarbrücken, Germany

January 2010 - April 2014:
Ph. D. student in Computer Science at the Cluster of Excellence for Multimodal Computing and Interaction of the Universität des Saarlandes, Saarbrücken, Germany and the Max-Planck-Institut für Informatik
May 2008 - August 2009:
Studies in Computer Science at the Universität des Saarlandes, Saarbrücken, Germany
Title of Master's Thesis: CrowdMovement - A Potential Field based Movement System for Crowds in Computer Games (supervisor: Prof. Dr. Slusallek)
September 2007 - May 2008:
Studies in Computer Science at the University of Edinburgh, Edinburgh, Scotland (United Kingdom)
October 2002 - May 2007:
Studies in Computer Science at the Universität des Saarlandes, Saarbrücken, Germany
Title of Bachelor's Thesis: Higher-Order Difference Unification and Waverule Categorization (supervisor: Prof. Dr. Siekmann)
2001:
Abitur at the Gymnasium Johanneum, Homburg, Germany

2014

Steffen Metzger
PhD Thesis
User-centric Knowledge Extraction and Maintenance
Saarbrücken, Germany, 2014
bibtex pdf
Steffen Metzger, Ralf Schenkel, and Marcin Sydow
Aspect-based Similar Entity Search in Semantic Knowledge Graphs with Diversity-awareness and Relaxation
In: Web Intelligence (WI) and Intelligent Agent Technologies (IAT), 2014 IEEE/WIC/ACM International Joint Conferences on (WIC 2014),
Warsaw, Poland, 2014
bibtex

2013

2012

Steffen Metzger, Michael Stoll, Katja Hose, Ralf Schenkel
Demonstration
LUKe and MIKE: Learning from User Knowledge and Managing Interactive Knowledge Extraction
In: 21st ACM International Conference on Information and Knowledge Management (CIKM 2012),
Maui, Hawaii, USA, 2012
bibtex pdf teaser video
Steffen Metzger, Katja Hose, and Ralf Schenkel
Colledge - A vision of collaborative knowledge networks
In: 2nd International Workshop on Semantic Search over the Web (SSW 2012), Istanbul, Turkey, 2012
summary bibtex pdf

2011

Steffen Metzger, Shady Elbassuoni, Katja Hose, Ralf Schenkel
S3K: Seeking Statement-Supporting top-K Witnesses
In: 20th ACM Conference on Information and Knowledge Management (CIKM 2011), Glasgow, UK, 2011.
summary bibtex pdf slides of the talk
- video 1 (22min)
- video 2 (29 min): roughly same content, but a bit slower, few more details
Michael Stoll, Katja Hose, Steffen Metzger, and Ralf Schenkel
Interaktive Wissensextraktion und Wissenssuche
In: Workshop Information Retrieval at LWA 2011 , Magdeburg, Germany, 2011.
bibtex pdf

2010

S. Elbassuoni, K. Hose, S. Metzger, R. Schenkel
ROXXI: Reviving witness dOcuments to eXplore eXtracted Information
In: Proceedings of the 36th International Conference on Very Large Data Bases (VLDB 2010), Singapore
summary bibtex pdf
Steffen Metzger
Wissensextraktion im Rahmen des Grid
In: Proceedings of the 22nd Workshop "Grundlagen von Datenbanken 2010"
bibtex pdf

2009