Dr. Stephan Vogel | Hamad Bin Khalifa University
Hamad Bin Khalifa University



Dr. Stephan Vogel

Research Director of Arabic Language Technologies
Qatar Computing Research Institute QCRI
Arabic Language Technologies

  • Phone+(974) 4454 1438

Research Interests

As Research Director of the Arabic Language Technologies (ALT) group, Stephan is responsible for helping to define the overall research agenda of QCRI and of the ALT team in particular.

His own research focus is on machine translation, especially the so-called statistical machine translation (SMT), where statistical modeling and machine learning techniques are used to learn from existing (human) translations how to translate new sentences. In the team’s research they deal with fundamental questions like optimization in SMT, integrating morphology, novel reordering models, etc, but also how this can be turned into useful applications to support real-live multilingual communication and information access.

An additional interest, which Stephan hopes to explore more in the future, is to apply language technologies in educational applications. In particular, QCRI’s ALT team has started to develop CALL (computer assisted language learning) applications for Arabic.


Before joining QCRI Dr. Vogel was a research scientist at Carnegie Mellon University, Pittsburgh, where he advised 10 PhD and eight master's students, and visiting students from other universities. He also led or participated in a number of research projects, funded by NSF and DARPA, including TIDES and GALE.

Assistant Research Professor at the Language Technologies Institute

Carnegie Mellon University, USA

2005 - 2011
  • Research Scientist

    Language Technologies Institute, Carnegie Mellon University, USA

    2001 - 2005
  • Research Assistant

    University of Karlsruhe (now KIT), Germany

    2000 - 2001
  • Research Assistant at RWTH Aachen

    RWTH Aachen, Germany

    1995 - 2000



Computer Science Department

  • MPhil History and Philosophy of Science

    University of Cambridge, England

  • Diploma of Physics

    Philips University, Marburg


Selected Publications

  • Preference Grammars: Softening Syntactic Constraints to Improve Statistical Machine Translation.

    AshishVenugopal, Andreas Zollmann, Noah A.Smith, and Stephan Vogel

    May 31 - June 5, 2009.
  • Speech Translation Strategies. In: Tanja Schultz and Katrin Kirchhoff (Ed.) Multilingual Speech Processing.

    Stephan Vogel, Tanja Schultz, Alex Waibel, Seiichi Yamamoto. Speech Translation Strategies. In: Tanja Schultz and Katrin Kirchhoff (Ed.) Elsevier, Academic Press

  • Phrase Pair Extraction as Sentence Splitting.

    The 10th Machine Translation Summit, Phuket, Thailand,

    September 13-15, 2005
  • The CMU Statistical Translation System

    Stephan Vogel, Ying Zhang, Fei Huang, Alicia Tribble, AshishVenugopal, Bing Zhao, and Alex Waibel,

    September 2003
  • HMM-Based Word Alignment in Statistical Translation. International Conference on Computational Linguistics (COLING)

    Stephan Vogel, Hermann Ney, ChristophTillmann.

    August 1996