Hasso-Plattner-Institut
  
Hasso-Plattner-Institut
Prof. Dr. Felix Naumann
  
 

Contact Information

former member

 


Research Interests

  • Information Retrieval and Information Extraction
  • Natural Language Processing and Language Modeling
  • Sentiment Analysis and Social Networks 
  • Knowledge Base Population and Question Answering Systems

Education

  •  2007 - 2011 
     PhD student in Computer Science at the partnership for research and education (PIRE) Meaning Representations in Language Understanding at Saarland University, Saarbrucken, Germany. 
     German Research Foundation (DFG) scholarship. 
  • 2009 
     Visiting Researcher at CLSP lab. of Johns Hopkins University, Baltimore, USA. 
  • 2005 - 2007 
     Master of Science in Computer Engineering, Artificial Intelligence, at Sharif University of Technology, Tehran, Iran 
  •  2001 - 2005 
     Bachelor of Science in Computer Engineering, Software Engineering, at Sharif University of Technology, Tehran, Iran 
  •  2000 - 2001 
     Pre-University in Mathematics and Physics at Maryam Pre-University, Saveh, Iran 

Teaching

  • Guest Lecturer and Teacher Assistant at Hasso-Plattner-Institut, Potsdam, Germany

  • Lecturer at Azad University, Saveh, Iran  

    • WS 2006/2007: System Analysis and Design
    • WS 2006/2007: Software Engineering

  • Teacher Assistant at Sharif University of Technology, Tehran, Iran

    • WS 2006/2007: Data Structure 
    • WS 2006/2007: Software Engineering
    • SS 2005: Design Algorithm
    • WS 2003/2004: Design Algorithm
    • SS 2003: Data Structure         

Project/Thesis Supervision

  • at Hasso-Plattner-Institut, Potsdam, German

    • WS 2011/12 - SS 2012: Bachelor's project "CelebDB: Harvesting Celebrity Data"
    • WS 2011/12: Fabian Lindenberg - Master Student - "Generating Query Suggestions by Exploiting Latent Semantics in Query Logs" 
    • SS 2012: Michael Leben - Master Student - "Automated Email
       Foldering Using Contextual Features"

  • at Saarland University, Saarbrücken, Germany

    • SS 2010: Farina Freigang – Master Student - "Language Modeling for In-car ASR Error Correction: Performance vs. Interaction Costs" 
    • SS 2008: Joo-Eun Feit – Bachelor Student - Opinion Sentence Annotation for Question Answering Systems

Professional Activities

  •  Program Committee

    • IEEE International Conference on Computational Linguistics Applications (CLA), 2010-present.
    • Elsevier International Journal of Information Systems (IS), 2011-present.

     

  • Reviewing Committee

    • Erasmus Mundus European Master Program in Language and Communication Technology (LCT), Saarland University, Saarbrücken, Germany, 2008-2011.
    • Master Program in Language Science and Technology (LST), Saarland University, Saarbrücken, Germany, 2010.

     

  • Head of Scientific Student Chapter
     Department of Computer Engineering, Sharif University of Technology, Tehran, Iran, 2005 

Publications

  • Journal Papers

    •  M. Ghayoomi, S. Momtazi, M. Bijnkhan 
        "A Study of Corpus Development for Persian" pdf
       International Journal of Asian Language Processing, 20(1): 17-33, 2010.

  •  Thesises:

    • S. Momtazi 
        "Advanced Language Modeling for Sentence Retrieval and Classification in Question Answering Systems"  online version
       PhD Thesis, Computer Science Department, Saarland University, Saarbrücken, Germany, 2010. 
    • S. Momtazi 
        "Fuzzy Word Clustering for Building Statistical Language Models in Continuous Speech Recognition Systems" 
       M.Sc. Thesis, Computer Engineering Department, Sharif University Of Technology, Tehran, Iran, 2007. 
    •  S. Momtazi, M. Fazel-Zarandi 
       "Robust Parsing for Word Lattices in Continuous Speech Recognition Systems" 
       B.Sc. Thesis, Computer Engineering Department, Sharif University Of Technology, Tehran, Iran, 2005.

  • Conference and Workshop Papers

    • M. Felde, S. Momtazi, F. Freigang, D. Klakow, C. Muller
       "Mobile Texting: Can Post-ASR Correction Solve the Issues? An Experimental Study on Gain vs. Costs"   
       Proceedings of International Conference on Intelligent User Interfaces (IUI), Lisbon, Portugal, 2012 (to appear)
    • S. Momtazi
       "Fine-grained German Sentiment Analysis on Social Media"   
       Proceedings of International Conference on Language Resources and Evaluation (LREC), Istanbul, Turkey, 2012 (to appear)
    • S. Momtazi, D. Klakow   "Trained Trigger Language Model for Sentence Retrieval in QA: Bridging the Vocabulary Gap"   
        Proceedings of International ACM Conference on Information and Knowledge Management (CIKM), Glasgow, UK, 2011.
    • G. Chrupala, S. Momtazi, M. Wiegand, S. Kazalski, F. Xu, B. Roth, A. Balahur, D. Klakow 
       "Saarland University Spoken Language Systems at the Slot Filling Task of TAC KBP 2010"   pdf
       Proceedings of International Text Analysis Conference (TAC), NIST Campus, Maryland, USA, 2010.
    • S. Momtazi, F. Faubel, D. Klakow 
        "Within and Across Sentence Boundary Language Model"   pdf
       Proceedings of International IEEE INTERSPEECH Conference, Makuhari, Japan, 2010.
    •  S. Momtazi, M. Lease, D. Klakow 
        "Effective Term Weighting for Sentence Retrieval"   pdf
       Proceedings of European Conference on Research and Advanced Technology for Digital Libraries (ECDL), Glasgow, UK, 2010.
    •  S. Momtazi, D. Klakow 
        "Hierarchical Pitman-Yor Language Model for Information Retrieval"   pdf
       Proceedings of International ACM SIGIR Conference on Research and Development in Information Retrieval, Geneva, Switzerland, 2010.
    •  S. Momtazi, S. Khudanpur, D. Klakow 
        "A Comparative Study on Word Co-occurrence for Term Clustering in Language Model-based Sentence Retrieval"   pdf 
       Proceedings of International Conference of North American Association of Computational Linguistics (NAACL), Los Angeles, USA, 2010.
    •  S. Momtazi, D. Klakow 
        "Yahoo! Answers for Sentence Retrieval in Question Answering"   pdf
       Proceedings of the LREC Workshop on Web Logs and Question Answering, Valletta, Malta, 2010.
    •  S. Momtazi, D. Klakow 
        "A Word Clustering Approach for Language Model-based Sentence Retrieval in Question Answering Systems"   pdf
       Proceedings of International ACM Conference on Information and Knowledge Management (CIKM), Hong Kong, China, 2009.
    •  S. Momtazi, D. Klakow 
        "Language Model-Based Sentence Classification for Opinion Question Answering Systems"   pdf
       Proceedings of IEEE International Conference on Computer Science and Information Technology - Computational Linguistics Applications (CLA), Mragowo, Poland, 2009.
    •  S. Momtazi, S. Kazalski, D. Klakow 
        "A Combined Query Expansion Technique for Retrieving Opinions from Blogs"   pdf 
       Proceedings of IEEE International Conference on Intelligent System Design and Applications (ISDA), Pisa, Italy, 2009.
    •  S. Momtazi, H. Sameti 
        "A Possibilistic Approach in Word Clustering for Building Statistical Language Models"   pdf
       Proceedings of IEEE International Conference on Intelligent System Design and Applications (ISDA), Pisa, Italy, 2009.
    •  M. Ghayoomi, S. Momtazi 
        "Challenges in Developing Persian Corpora from Online Resources"   pdf
       Proceedings of IEEE International Conference on Asian Language Processing (IALP), Singapore, 2009. 
    •  M. Ghayoomi, S. Momtazi 
        "An Overview on the Existing Language Models for Prediction Systems as Writing Assistant Tools"   pdf
       Proceedings of IEEE International Conference on System, Man, and Cybernetic (SMC), Texas, USA, 2009. 
    •  M. Wiegand, S. Momtazi, S. Kazalski, F. Xu, G. Chrupala, D. Klakow 
       "The Alyssa System at TAC QA 2008"   pdf 
       Proceedings International Text Analysis Conference (TAC), NIST Campus, Maryland, USA, 2008.
    •  S. Momtazi, S. Kafi, H. Beigy 
       "Solving Stochastic Path Problem: Particle Swarm Optimization Approach"   pdf 
       Proceedings of 21st International Conference on Industrial, Engineering & other Applications Applied Intelligent Systems (IEA/AIE), Springer LNAI 5027, pp. 590-600, Wroclaw, Poland, 2008. 
    •  M. Bahrani, H. Sameti, N.Hafezi, S. Momtazi 
       "A New Word Clustering Method for Building n-gram Language Models in Continuous Speech Recognition Systems"   pdf
       Proceedings of 21stInternational Conference on Industrial, Engineering & other Applications Applied Intelligent Systems (IEA/AIE), Springer LNAI 5027, pp. 286-293, Wroclaw, Poland, 2008.
    •  S. Momtazi, H.Sameti, S. Vaisipour, M. Tefagh 
       "Introducing a Framework to Create Telephony Speech Databases from Direct Ones"   pdf
       Proceedings of IEEE International Conference on Systems, Signal and Image Processing (IWSSIP), Maribor, Slovenia, 2007. 
    •  S. Momtazi, H. Sameti, M. Bahrani, N.Hafezi 
       "A pos-based fuzzy word clustering algorithm for continuous speech recognition systems",   pdf
       Proceedings of IEEE International Conference on Information Sciences, Signal Processing and its Applications (ISSPA), Sharjeh, UAE, 2007. 
    •  S. Momtazi, H. Sameti, M. Fazel-Zarandi, M. Bahrani 
      "A Robust Parser with Word Lattice for Continuous Speech Recognition Systems"    pdf
       Proceedings of IEEE International Conference on Information Sciences, Signal Processing and its Applications (ISSPA), Sharjeh, UAE, 2007.

  • In Persian

    • M. Bahrani, H. Sameti, S. Momtazi, N.Hafezi 
      "Automatic Word Clustering based on Parts Of Speech for Continuous Speech Recognition Systems"
       Proceedings of 13th International CSI Computer Conference, Kish Island, Iran, 2008. 
    •  S. Momtazi, H. Sameti, M. Bahrani, N.Hafezi 
        "A Fuzzy Approach in Word Clustering for Building Statistical Language Models" 
       Proceedings of 12th International CSI Computer Conference, Tehran, Iran, 2007. 
    •  S. Momtazi, M. Fazel-Zarandi, H. Sameti, M. Bahrani 
       "Using a Partial Robust Parser for Continuous Speech Recognition Systems" 
       Proceedings of 11th CSI Computer Conference, Tehran, Iran, 2006. 
    •  M. Bahrani, H. Sameti, N. Hafezi, S. Momtazi, H. Movassagh 
       "Using Persian Corpus in Building Statistical Language Model for Persian Continuous Speech Recognition Systems" 
       Proceedings of 2nd Persiancoling Workshop, Tehran, Iran, 2006. 
    •  F. Sharifian, S. Momtazi 
       "An Intelligent Method for Improving the Performance of the Partial Order Planning Algorithm" 
       Proceedings of 4th Computer Conference, Tehran, Iran, 2006. 
    •  S. Momtazi, M. Akbari, Z. Sazvar, M. Khakestani 
       "Software Feasibility of Logistic Systems in Iran-Khodro Company" 
       Proceedings of 2nd National Conference on Logistics & Supply Chain, Tehran, Iran, 2006. 

 

 

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