Research Interests

Natural Language Processing: statistical machine translation, hybrid machine translation, cross-lingual information retrieval, statistical parsing of syntax and discourse, language modeling, morphology, information extraction, topic detection, automatic evaluation

Machine Learning: structured prediction, semi-supervised learning, unsupervised learning, hybrid discriminative and generative models, distributed algorithms for machine learning

Publications

Google Citations page

• Alexander Fraser, Marion Weller, Aoife Cahill, Fabienne Cap (2012). Modeling Inflection and Word-Formation in SMT. In Proceedings of the 13th Conference of the European Chapter of the Association for Computational Linguistics (EACL), to appear. abstract

• Anita Gojun, Alexander Fraser (2012). Determining the Placement of German Verbs in English-to-German SMT. In Proceedings of the 13th Conference of the European Chapter of the Association for Computational Linguistics (EACL), to appear. abstract

• Hassan Sajjad, Nadir Durrani, Helmut Schmid, Alexander Fraser (2011). Comparing Two Techniques for Learning Transliteration Models Using a Parallel Corpus. In Proceedings of The 5th International Joint Conference on Natural Language Processing (IJCNLP), pages 129-137, Chiang Mai, Thailand, November.

• Nadir Durrani, Helmut Schmid, Alexander Fraser (2011). A Joint Sequence Translation Model with Integrated Reordering. In Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics (ACL), pages 1045-1054, Portland, Oregon, USA, June. Errata

• Hassan Sajjad, Alexander Fraser, Helmut Schmid (2011). An Algorithm for Unsupervised Transliteration Mining with an Application to Word Alignment. In Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics (ACL), pages 430-439, Portland, Oregon, USA, June.

• Fabienne Braune, Alexander Fraser (2010). Improved Unsupervised Sentence Alignment for Symmetrical and Asymmetrical Parallel Corpora. In Proceedings of the the 23rd International Conference on Computational Linguistics (COLING) - Posters, pages 81-89, Beijing, China, August. Software

• Nadir Durrani, Hassan Sajjad, Alexander Fraser, Helmut Schmid (2010). Hindi-to-Urdu Machine Translation Through Transliteration. In Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics (ACL), pages 465-474, Uppsala, Sweden, July.

• Fabienne Fritzinger, Alexander Fraser (2010). How to Avoid Burning Ducks: Combining Linguistic Analysis and Corpus Statistics for German Compound Processing. In Proceedings of the ACL 2010 Fifth Workshop on Statistical Machine Translation and MetricsMATR, pages 224-234, Uppsala, Sweden, July.

• Florian Schwarck, Alexander Fraser, Hinrich Schuetze (2010). Bitext-Based Resolution of German Subject-Object Ambiguities. In Proceedings of the 11th Annual Conference of the North American Chapter of the Association for Computational Linguistics (NAACL), Short Papers, pages 737-740, Los Angeles, California, USA, June.

• Alexander Fraser, Renjing Wang, Hinrich Schuetze (2009). A Progress Report on Bitext Parsing. In 2nd International Conference on the Future of Information Sciences (InFuture): Digital Resources and Knowledge Sharing, pages 43-52, Zagreb, Croatia, November. Invited Paper.

• Alexander Fraser, Renjing Wang, Hinrich Schuetze (2009). Rich Bitext Projection Features for Parse Reranking. In Proceedings of the 12th Conference of the European Chapter of the Association for Computational Linguistics (EACL), pages 282-290, Athens, Greece, March.

• Alexander Fraser (2009). Experiments in Morphosyntactic Processing for Translating to and from German. In Proceedings of the EACL 2009 Fourth Workshop on Statistical Machine Translation, pages 115-119, Athens, Greece, March. Errata

• Hamidreza Kobdani, Alexander Fraser and Hinrich Schuetze (2009). Word Alignment by Thresholded Two-Dimensional Normalization. In Proceedings of MT Summit XII - Posters, pages 260-267, Ottawa, Canada, August.

• Alexander Fraser, William Wong (2008). The Language Weaver Statistical Machine Translation Software System. In A. Farghaly, editor, Arabic Computational Linguistics, Chapter 9, pages 257-288, CSLI Publications.

• Alexander Fraser, Daniel Marcu (2007). Measuring Word Alignment Quality for Statistical Machine Translation. Computational Linguistics, 33(3): 293-303, September.

• Alexander Fraser (2007). Improved Word Alignments for Statistical Machine Translation. Ph.D. Thesis, University of Southern California, July (defended). Click here for latex source.

• Alexander Fraser, Daniel Marcu (2007). Getting the Structure Right for Word Alignment: LEAF. In Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning (EMNLP-CoNLL), pages 51-60. Prague, Czech Republic, June.

• Alexander Fraser, Daniel Marcu (2006). Semi-Supervised Training for Statistical Word Alignment. In Proceedings of the Conference of the Association for Computational Linguistics (ACL), pages 769-776, Sydney, Australia, July.

• Alexander Fraser, Daniel Marcu (2006). Measuring Word Alignment Quality for Statistical Machine Translation. Technical Report ISI-TR-616, ISI/University of Southern California, May.

• Alexander Fraser, Daniel Marcu (2005). ISI's Participation in the Romanian-English Alignment Task. In ACL 2005 Workshop on Building and Using Parallel Texts, pages 91-94, Ann Arbor, Michigan, USA, June.

• Dragos Stefan Munteanu, Alexander Fraser, Daniel Marcu (2004). Improved Machine Translation Performance via Parallel Sentence Extraction from Comparable Corpora. In Proceedings of the Human Language Technology and North American Association for Computational Linguistics Conference (HLT/NAACL), pages 265-272, Boston, Massachusetts, USA, May.

• Franz Josef Och, Daniel Gildea, Sanjeev Khudanpur, Anoop Sarkar, Kenji Yamada, Alex Fraser, Shankar Kumar, Libin Shen, David Smith, Katherine Eng, Viren Jain, Zhen Jin, Dragomir Radev (2004). A Smorgasbord of Features for Statistical Machine Translation. In Proceedings of the Human Language Technology and North American Association for Computational Linguistics Conference (HLT/NAACL), pages 161-168, Boston, Massachusetts, USA, May.

• Franz Josef Och, Daniel Gildea, Sanjeev Khudanpur, Anoop Sarkar, Kenji Yamada, Alex Fraser, Shankar Kumar, Libin Shen, David Smith, Katherine Eng, Viren Jain, Zhen Jin, Dragomir Radev (2003). Syntax for Statistical Machine Translation. Johns Hopkins University 2003 Summer Workshop on Language Engineering, Center for Language and Speech Processing, Baltimore, Maryland, USA, August.

• Alexander Fraser, Jinxi Xu, Ralph Weischedel (2002). TREC 2002 Cross-lingual Retrieval at BBN. In Voorhees, E.M. & Harman, D.K. (Eds.) The Eleventh Text Retrieval Conference (TREC), pages 102-106. NIST Special Publication 500-251.

• Jinxi Xu, Alexander Fraser, Ralph Weischedel (2002). Empirical Studies in Strategies for Arabic Retrieval. In Proceedings of the 25th Annual International Conference on Research and Development in Information Retrieval (SIGIR), pages 269-274. Tampere, Finland, August.

• Jinxi Xu, Alexander Fraser, Ralph Weischedel (2001). TREC 2001 Cross-lingual Retrieval at BBN. In Voorhees, E.M. & Harman, D.K. (Eds.) The Tenth Text Retrieval Conference (TREC), pages 68-77. NIST Special Publication 500-250.