liomaca at ims dot uni-stuttgart.de

I have now moved to the University of Copenhagen, Department of Computer Science.

Research

Teaching

• Introduction to Information Retrieval, Spring 2010
• Computational Linguistics, Fall 2009 (Konstanz University)
• Machine Language Processing, Fall 2009 (Konstanz University)
• Information Retrieval, Fall 2009 (Konstanz University)

Publications

• Lukas Michelbacher, Martin Forst, Alok Kothari, Christina Lioma, Hinrich Schuetze
  A Cascaded Classification Approach to Semantic Head Recognition
  International ACL Conference on Empirical Methods in Natural Language Processing EMNLP, 2011.
  

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• Roi Blanco, Christina Lioma
  Graph-based Term Weighting for Information Retrieval
  Information Retrieval Journal, 2011.
  

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• Sense discrimination for physics retrieval

  Christina Lioma, Alok Kothari, Hinrich Schuetze
  SIGIR '11 Proceedings of the 34th international ACM SIGIR conference on Research and development in Information, 2011

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• Christina Lioma, Birger Larsen, Hinrich Schuetze
  User Perspectives on Query Difficulty
  International Conference on the Theory of Information Retrieval ICTIR, 2011.
  

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• Radu Dragusin, Paula Petcu, Christina Lioma, Birger Larsen, Henrik Jorgensen, Ole Winther
  Rare Disease Diagnosis as an Information Retrieval Task
  International Conference on the Theory of Information Retrieval ICTIR, 2011.
  

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• Charles Jochim, Christina Lioma, Hinrich Schuetze
  Expanding Queries with Term and Phrase Translations in Patent Retrieval
  Information Retrieval Facility Conference, 2011.
  

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• Preliminary study into query translation for patent retrieval

  Charles Jochim, Christina Lioma, Hinrich Schütze, Steffen Koch, Thomas Ertl
  PaIR '10 Proceedings of the 3rd international workshop on Patent information retrieval, 2010

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• A subjective logic formalisation of the principle of polyrepresentation for information needs

  Christina Lioma, Birger Larsen, Hinrich Schuetze, Peter Ingwersen
  IIiX '10 Proceeding of the third symposium on Information interaction in context, 2010

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• Christina Lioma, Roi Blanco, Raquel Mochales-Palau, Marie-Francine Moens
  A Belief Model of Query Difficulty that uses Subjective Logic
  International Conference on the Theory of Information Retrieval (ICTIR), 2009.
  

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• Christina Lioma, Roi Blanco, Marie-Francine Moens
  A Logical Inference Approach to Query Expansion with Social Tags
  International Conference on the Theory of Information Retrieval (ICTIR), 2009.
  

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• Christina Lioma, Roi Blanco
  Part of Speech Based Term Weighting for Information Retrieval
  European Conference on Information Retrieval (ECIR), 2009.
  

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• Roi Blanco, Christina Lioma
  Mixed Monolingual Homepage Finding in 34 Languages: The Role of Language Script and Search Domains
  Information Retrieval Journal, Special Issue on non-English Web Retrieval, 2009.
  

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• Christina Lioma, Marie-Francine Moens, Juan-Carlos Gomez, Jan De Beer, Andre Bergholz, Gerhard Paas, Patrick Horkan
  Anticipating Hidden Text Salting in Emails
  International Symposium on Recent Advances in Intrusion Detection (RAID), 2008.
  

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• Christina Lioma, Marie-Francine Moens, Leif Azzopardi
  Collaborative Annotation for Pseudo Relevance Feedback
  Exploiting Semantic Annotations in Information Retrieval Workshop (ESAIR), ECIR, 2008, pp. 25-35.
  

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• Christina Lioma, Keith Van Rijsbergen
  Part of Speech n-Grams and Information Retrieval
  Revue Francaise de Linguistique Applique, Special Issue on Information Extraction and Linguistics, 2008.
  

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• Christina Lioma, Iadh Ounis
  A Syntactically-Based Query Reformulation Technique for Information Retrieval
  Information Processing and Management (IPM), 2008.
  

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• Christina Lioma
  Part of Speech n-Grams for Information Retrieval
  PhD Thesis, Computing Science, University of Glasgow, December 2007.
  

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• Christina Lioma, Iadh Ounis
  Extending Weighting Models with a Term Quality Measure
  Symposium on String Processing and Information Retrieval, 2007.
  

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• Craig Macdonald, Christina Lioma, Iadh Ounis
  Terrier takes on the non-English Web
  Workshop on Improving Web Retrieval for non-English Queries, Annual International ACM SIGIR Conference, 2007.
  

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• Random walk term weighting for information retrieval

  Roi Blanco, Christina Lioma
  SIGIR '07 Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, 2007

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• Iadh Ounis, Christina Lioma, Craig Macdonald, Vassilis Plachouras
  Research Directions in Terrier: a Search Engine for Advanced Retrieval on the Web
  Ricardo Baeza-Yates et al. (Eds.) Novatica/UPGRADE Special Issue on Web Information Access, 2007.
  

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• Christina Lioma, Iadh Ounis
  Light Syntactically-Based Index Pruning for Information Retrieval.
  In: Amati, G., et al. (Eds.) Advances in Information Retrieval, 29th European Conference on Information Retrieval (ECIR), Rome, Italy, 2007.
  

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• Christina Lioma, Craig Macdonald, Vassilis Plachouras, Jie Peng, Ben He, Iadh Ounis
  University of Glasgow at TREC 2006: Experiments in Terabyte and Enterprise Tracks with Terrier
  Proceedings of the 15th Text REtrieval Conference (TREC 2006), 2006.
  

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• Iadh Ounis, Gianni Amati, Vassilis Plachouras, Ben He, Craig Macdonals, Christina Lioma
  Terrier: A High Performance and Scalable Information Retrieval Platform
  Workshop on Open Source Information Retrieval, SIGIR, 2006.
  

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• Christina Lioma, Iadh Ounis
  Examining the Content Load of Part-of-Speech Blocks for Information Retrieval
  Joint Conference of the International Committee on Computational Linguistics and the Association for Computational Linguistics (COLING/ACL), 2006.
  

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• Christina Lioma, Craig Macdonald, Ben He, Vassilis Plachouras, Iadh Ounis
  Applying Light Natural Language Processing to Ad-Hoc Cross Language Information Retrieval
  In Accessing Multilingual Information Repositories: Cross-Language Evaluation Forum, (CLEF 2005), Vienna, Austria, Revised Selected Papers. Carol Peters, Fredric C. Gey, Julio Gonzalo, Gareth J.F.Jones, Michael Kluck, Bernardo Magnini, Henning Muller, Maarten de Rijke (Eds.). Series: Lecture Notes in Computer Science, Vol. 4022.
  

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• Craig Macdonald, Vassilis Plachouras, Ben He, Christina Lioma, Iadh Ounis
  University of Glasgow at WebCLEF 2005: Experiments in per-field normalisation and language specific stemming
  In Accessing Multilingual Information Repositories: Cross-Language Evaluation Forum, (CLEF 2005), Vienna, Austria, Revised Selected Papers. Carol Peters, Fredric C. Gey, Julio Gonzalo, Gareth J.F.Jones, Michael Kluck, Bernardo Magnini, Henning Muller, Maarten de Rijke (Eds.). Series: Lecture Notes in Computer Science, Vol. 4022.
  

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• Christina Lioma, Iadh Ounis
  Deploying Part-of-Speech Patterns to Enhance Statistical Phrase-Based Machine Translation Resources
  Workshop on Building and Using Parallel Texts, Association for Computational Linguistics (ACL), 2005. 2005.
  

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• Christina Lioma, Ben He, Vassilis Plachouras, Iadh Ounis
  The University of Glasgow at CLEF 2004: French Monolingual Information Retrieval with Terrier
  In Multilingual Information Access for Text, Speech and Images: Results of the Fifth Cross-Language Evaluation Forum Evaluation Campaign, (CLEF 2004) Volume Editors: C. Peters, P. D. Clough, G. F. J. Jones, J. Gonzalo, M. Kluck and B. Magnini, Lecture Notes in Computer Science, Springer-Verlag, 2005.
  

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• Christina Lioma
  Basic Experimental Extractor: A Novel Approach to Automatic Summarisation
  M.Sc. dissertation, Centre for Computational Linguistics, University of Manchester, 2003. (Awarded Distinction)