Torsten Hahmann

Curriculum Vitae

My CV (as of Feb. 2013)

Brief Bio

For my PhD thesis I developed a family of spatial ontologies that represent physical space qualitatively, that is, without the use of precise measurements such as distances, sizes, or angles. They address the need for formalizing the semantics of spatial relations used by humans for high-level spatial intelligence and the need to integrate those representations with quantitative representations of space as found in vector-based or pixel-based digital representations of our environment. For this reason, I semantically integrated many existing spatial models with the newly developed ontologies to show what kind of information is lost when translating spatial information between different ontologies.
As a large-scale ontology development project, my PhD thesis also serves as a testbed for the automation of ontology verification and integration.
I have defended my thesis in February 2013 in the Deparment of Computer Science at the University of Toronto. My advisor was Michael Gruninger of the Department of Mechanical and Industrial Engineering.

Apart from my thesis work, I'm actively involved in the development of the Common Logic Ontology Repository (COLORE) for semantic integration and modularization of ontologies.

Previously, I obtained a M.Sc. in Computer Science from the University of Toronto in 2008, my thesis work prvoding a mathematical characterization of the mereotopology of Asher & Vieu. In 2006, I obtained a B.Sc. in Software Systems Engineering from the Hasso-Plattner-Institute (HPI) at the University of Potsdam, Germany.


T. Hahmann: A Reconciliation of Logical Representations of Space: From Multidimensional Mereotopology to Geometry, PhD thesis, 2013.
supervisor: Michael Gruninger
PhD committee members: Alasdair Urquhart, Michael Winter, Sheila McIlraith, Goldie Nejat
external examiner: Achille Varzi
PhD Thesis (8MB) Presentation (high-level) Presentation (chapter by chapter)

T. Hahmann: Model-Theoretic Analysis of Asher and Vieu's Mereotopology, M.Sc. thesis, 2008.
supervisor: Michael Gruninger, second reader: Alasdair Urquhart
MSc Thesis Presentation

Steinert, B., Möller, J., Sommer, P., Steinhauer, S., Hüttenrauch, S., Queck, T., Hahmann, T.: Semantic SOA - Realization of the Adaptive Services Grid. Bachelor project report, Hasso-Plattner-Institute for Software Systems Engineering at the University of Potsdam, Potsdam, 2006. (in German)
supervisors: Harald Meyer, Guido Laures, Peter Tröger, Prof. Matthias Weske, Prof. Andreas Polze
BSc Thesis (Introduction) Presentation Dynamic Supply Chain Scenario
see background talk Workflow and Web Service Composition

Previous Work