Personal

Homepage of Daniel Stein

Welcome to the homepage of Daniel Stein.

Currently I am a PhD student within the Human Language Technology and Translation Group
at the Chair of Computer Science 6 of the RWTH Aachen University.

The main research topics of the chair are

• Pattern Recognition
• Automatic Speech Recognition
• Statistical Machine Translation
• Image Processing

My personal research interests are hierarchical phrases for automatic translation, sign language, incorporation of sign language recognition features.

I am author of Jane, RWTH's open-source hierarchical phrase-based translation toolkit, free for non-commercial use.

You can find me in room 6125a of our department, or contact me via mail or Xing/OpenBC.

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Teaching

• Course Work
• Natural Language Processing, Summer 2010, with Matthias Huck.
• Natural Language Processing, Summer 2009, with David Vilar and Saab Mansour.
• Automatic Speech Recognition, Winter 2008/09 (first part on Signal Analysis).
• Operating Systems and System Software, Winter 2007/08 with Stefan Hahn and David Rybach.
• Digital Processing of Speech and Image Signals, Winter 2006/07.
• Datastructures and Algorithms, Summer 2006 with Gregor Leusch and Christian Plahl.
• Lab Courses
• Undergrad software lab Machine Translation (Summer 2009, Summer 2010), with Matthias Huck (design and coordination).
• Undergrad software lab Pattern Classification and Image Recognition (Summer 2007, Summer 2008) (coordination and first exercise).
• Supervision
• Diploma Thesis of Markus Freitag, "Minimum Error Rate Training Extensions for Statistical Machine Translation", 2009, with David Vilar
• Diploma Thesis of Stephan Peitz, "Extending Statistical Machine Translation Using Syntax", 2009, with David Vilar
• Undergrad seminar Data Compression,
      Winter 2006/07, Winter 2007/08, Winter 2008/09, Winter 2009/10, Winter 2010/11
     Reoccuring topics: "Scalar Quantization", "Vector Quantization", "Transform-based Quantization"
• Seminars about selected topics in Human Language Technology and Pattern Recognition,
     Summer 2007, Winter 2007/08, Summer 2008, Winter 2009/10
     Topics: "Syntax-based Translation", "Discriminative Alignment for Machine Translation", "Discriminative Training for Machine Translation",
     "Evaluation metrics for Machine Translation", "String Kernels", "Maximum Entropy for Machine Translation"
• Organisation
• Assisting Student advisor for the following study programs offered by the Computer Science Department at RWTH Aachen University, since Summer 2008:
  • Diploma Computer Science
  • Bachelor Computer Science
• Coordination of "nutritional" lunch talks on various tools, papers, translation issues, e.g. vi, LaTeX, R, octave, irregular on a weekly basis
• Organisation of Powerpoint Karaoke at our institute, but even more irregular (roughly every three years)
• Workshop on Sign Languages, Gebärdensprachworkshop GW2006, RWTH Aachen University, October 2006 with Jan Bungeroth.
• Part of the Program Committee, 4th Workshop on the Representation and Processing of Sign Languages, LREC 2010, Malta.

Publications

2012

• D. Vilar, D. Stein, M. Huck, and H. Ney. Jane: an advanced freely available hierarchical machine translation toolkit. Machine Translation, pages 1-20, January 2012.
  

2011

• J. Peter, M. Huck, H. Ney, and D. Stein. Soft String-to-Dependency Hierarchical Machine Translation. In International Workshop on Spoken Language Translation (IWSLT), pages 246-253, San Francisco, California, USA, December 2011.
  
• M. Huck, J. Wuebker, C. Schmidt, M. Freitag, S. Peitz, D. Stein, A. Dagnelies, S. Mansour, G. Leusch, and H. Ney. The RWTH Aachen Machine Translation System for WMT 2011. In EMNLP 2011 Sixth Workshop on Statistical Machine Translation (WMT 2011), pages 405-412, Edinburgh, UK, July 2011.
  
• M. Huck, D. Vilar, D. Stein, and H. Ney. Lightly-Supervised Training for Hierarchical Phrase-Based Machine Translation. In EMNLP 2011 Workshop on Unsupervised Learning in NLP, pages 91-96, Edinburgh, UK, July 2011.
  
• M. Huck, D. Vilar, D. Stein, and H. Ney. Advancements in Arabic-to-English Hierarchical Machine Translation. In 15th Annual Conference of the European Association for Machine Translation (EAMT), pages 273-280, Leuven, Belgium, May 2011.
  
• D. Stein, D. Vilar, S. Peitz, M. Freitag, M. Huck, and H. Ney. A Guide to Jane, an Open Source Hierarchical Translation Toolkit. The Prague Bulletin of Mathematical Linguistics, number 95, pages 5-18, Prague, Czech Republic, April 2011.
  
• D. Stein, D. Vilar, and H. Ney. Soft Syntax Features and Other Extensions for Hierarchical SMT. In Joseph Olive, Caitlin Christianson, and John McCary: Handbook of Natural Language Processing and Machine Translation Chp. 2, pages , Springer Verlag, January 2011. Accepted for publication.
  

2010

• D. Vilar, D. Stein, S. Peitz, and H. Ney. If I Only Had a Parser: Poor Man's Syntax for Hierarchical Machine Translation. In International Workshop on Spoken Language Translation (IWSLT), pages 345-352, Paris, France, December 2010.
  
• D. Stein, C. Schmidt, and H. Ney. Sign Language Machine Translation Overkill. In International Workshop on Spoken Language Translation (IWSLT), pages 337-344, Paris, France, December 2010.
  
• D. Stein, S. Peitz, D. Vilar, and H. Ney. A Cocktail of Deep Syntactic Features for Hierarchical Machine Translation. In Conference of the Association for Machine Translation in the Americas 2010 (AMTA 2010), number 9, pages 9, October 2010.
  
• D. Vilar, D. Stein, M. Huck, and H. Ney. Jane: Open Source Hierarchical Translation, Extended with Reordering and Lexicon Models. In ACL 2010 Joint Fifth Workshop on Statistical Machine Translation and Metrics MATR (WMT 2010), pages 262-270, Uppsala, Sweden, July 2010.
  
• C. Heger, J. Wuebker, M. Huck, G. Leusch, S. Mansour, D. Stein, and H. Ney. The RWTH Aachen Machine Translation System for WMT 2010. In ACL 2010 Joint Fifth Workshop on Statistical Machine Translation and Metrics MATR (WMT 2010), pages 93-97, Uppsala, Sweden, July 2010.
  
• J. Forster, D. Stein, E. Ormel, O. Crasborn, and H. Ney. Best Practice for Sign Language Data Collections Regarding the Needs of Data-Driven Recognition and Translation. In 4th Workshop on the Representation and Processing of Sign Languages: Corpora and Sign Language Technologies (CSLT 2010), pages 92-97, Valletta, Malta, May 2010.
  
• D. Stein, J. Forster, U. Zelle, P. Dreuw, and H. Ney. Analysis of the German Sign Language Weather Forecast Corpus. In 4th Workshop on the Representation and Processing of Sign Languages: Corpora and Sign Language Technologies (CSLT 2010), pages 225-230, Valletta, Malta, May 2010.
  
• E. Ormel, O. Crasborn, E. v. d. Kooij, L. v. Dijken, E. Y. Nauta, J. Forster, and D. Stein. Glossing a multi-purpose sign language corpus . In 4th Workshop on the Representation and Processing of Sign Languages: Corpora and Sign Language Technologies (CSLT 2010), Valletta, Malta, May 2010.
  
• P. Dreuw, J. Forster, Y. Gweth, D. Stein, H. Ney, G. Martinez, J. Verges Llahi, O. Crasborn, E. Ormel, W. Du, T. Hoyoux, J. Piater, J. M. Moya Lazaro, and M. Wheatley. SignSpeak - Understanding, Recognition, and Translation of Sign Languages. In 4th Workshop on the Representation and Processing of Sign Languages: Corpora and Sign Language Technologies (CSLT 2010), Valletta, Malta, May 2010.
  

2009

• M. Popović, D. Vilar, D. Stein, E. Matusov, and H. Ney. The RWTH Machine Translation System for WMT 2009. In Fourth EACL Workshop on Statistical Machine Translation (WMT 2009), pages 66-69, Athens, Greece, March 2009.
  
• P. Dreuw, D. Stein, and H. Ney. Enhancing a Sign Language Translation System with Vision-Based Features. Gesture-Based Human-Computer Interaction and Simulation, volume 5085, number 1, pages 108-113, Lisbon, Portugal, January 2009.
  

2008

• D. Vilar, D. Stein, and H. Ney. Analysing Soft Syntax Features and Heuristics for Hierarchical Phrase Based Machine Translation. In International Workshop on Spoken Language Translation (IWSLT), pages 190-197, Honolulu, Hawaii, October 2008.
  
• D. Vilar, D. Stein, Y. Zhang, E. Matusov, A. Mauser, O. Bender, S. Mansour, and H. Ney. The RWTH Machine Translation System for IWSLT 2008. In International Workshop on Spoken Language Translation (IWSLT), pages 108-115, Honolulu, Hawaii, October 2008.
  
• L. F. D'Haro, R. San-Segundo, R. d. Córdoba, J. Bungeroth, D. Stein, and H. Ney. Language Model Adaptation For a Speech to Sign Language Translation System Using Web Frequencies and a Map Framework. In Interspeech, Brisbane, Australia, September 2008.
  
• P. Dreuw, D. Stein, T. Deselaers, D. Rybach, M. Zahedi, J. Bungeroth, and H. Ney. Spoken Language Processing Techniques for Sign Language Recognition and Translation. Technology and Dissability, volume 20, number 2, pages 121-133, Amsterdam, The Netherlands, June 2008.
  
• J. Bungeroth, D. Stein, P. Dreuw, H. Ney, S. Morrissey, A. Way, and L. van Zijl. The ATIS Sign Language Corpus. In International Conference on Language Resources and Evaluation (LREC), Marrakech, Morocco, May 2008.
  

2007

• D. Stein, P. Dreuw, H. Ney, S. Morrissey, and A. Way. Hand in Hand: Automatic Sign Language to Speech Translation. In Conference on Theoretical and Methodological Issues in Machine Translation (TMI), pages 214-220, Skövde, Sweden, September 2007.
  
• S. Morrissey, A. Way, D. Stein, J. Bungeroth, and H. Ney. Towards a Hybrid Data-Driven MT System for Sign Languages. In Machine Translation Summit (MT Summit), pages 329-335, Copenhagen, Denmark, September 2007.
  
• P. Dreuw, D. Stein, and H. Ney. Enhancing a Sign Language Translation System with Vision-Based Features. In International Workshop on Gesture in Human-Computer Interaction and Simulation, pages 18-20, Lisbon, Portugal, May 2007.
  

2006

• M. Popović, D. Stein, and H. Ney. Statistical Machine Translation of German Compound Words. In FinTAL - 5th International Conference on Natural Language Processing, Springer Verlag, LNCS, pages 616-624, Turku, Finland, August 2006.
  
• D. Stein, J. Bungeroth, and H. Ney. Morpho-Syntax Based Statistical Methods for Sign Language Translation. In Conference of the European Association for Machine Translation (EAMT), pages 169-177, Oslo, Norway, June 2006.
  
• J. Bungeroth, D. Stein, P. Dreuw, M. Zahedi, and H. Ney. A German Sign Language Corpus of the Domain Weather Report. In International Conference on Language Resources and Evaluation (LREC), pages 2000-2003, Genoa, Italy, May 2006.
  

2005

• D. Stein. Morpho-Syntax Based Statistical Methods for Sign Language Translation. Master Thesis, Aachen, Germany, November 2005.