Michaela Atterer


2009

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Assessing and Improving the Performance of Speech Recognition for Incremental Systems
Timo Baumann | Michaela Atterer | David Schlangen
Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics

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RUBISC - a Robust Unification-Based Incremental Semantic Chunker
Michaela Atterer | David Schlangen
Proceedings of SRSL 2009, the 2nd Workshop on Semantic Representation of Spoken Language

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Incremental Reference Resolution: The Task, Metrics for Evaluation, and a Bayesian Filtering Model that is Sensitive to Disfluencies
David Schlangen | Timo Baumann | Michaela Atterer
Proceedings of the SIGDIAL 2009 Conference

2008

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Towards Incremental End-of-Utterance Detection in Dialogue Systems
Michaela Atterer | Timo Baumann | David Schlangen
Coling 2008: Companion volume: Posters

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An Inverted Index for Storing and Retrieving Grammatical Dependencies
Michaela Atterer | Hinrich Schütze
Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08)

Web count statistics gathered from search engines have been widely used as a resource in a variety of NLP tasks. For some tasks, however, the information they exploit is not fine-grained enough. We propose an inverted index over grammatical relations as a fast and reliable resource to access more general and also more detailed frequency information. To build the index, we use a dependency parser to parse a large corpus. We extract binary dependency relations, such as he-subj-say (“he” is the subject of “say”) as index terms and construct the index using publicly available open-source indexing software. The unit we index over is the sentence. The index can be used to extract grammatical relations and frequency counts for these relations. The framework also provides the possibility to search for partial dependencies (say, the frequency of “he” occurring in subject position), words, strings and a combination of these. One possible application is the disambiguation of syntactic structures.

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A Question Answering System for German. Experiments with Morphological Linguistic Resources
Florian Koehler | Hinrich Schuetze | Michaela Atterer
Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08)

Question Answering systems are systems that enable the user to ask questions in natural language and to also receive an answer in natural language. Most existing systems, however, are constructed for the English language, and it is not clear in how far these approaches are also applicable to other languages. A richer morphology, greater syntactic variability, and smaller fraction of webpages available in the language are just some issues that complicate the construction of systems for German. In this paper, we present a modular Question Answering System for German which uses several morphological resources to increase recall. Nouns are converted into verbs, verbs into nouns, and the tenses of verbs are modified. We use a web search engine as a back end to allow for open-domain Question Answering. A POS-tagger is employed to identify answer candidates which are then filtered and tiled. The system is shown to achieve a higher recall than other systems for German.

2007

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Squibs: Prepositional Phrase Attachment without Oracles
Michaela Atterer | Hinrich Schütze
Computational Linguistics, Volume 33, Number 4, December 2007

2006

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A Lattice-Based Framework for Enhancing Statistical Parsers with Information from Unlabeled Corpora
Michaela Atterer | Hinrich Schütze
Proceedings of the Tenth Conference on Computational Natural Language Learning (CoNLL-X)

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The Effect of Corpus Size in Combining Supervised and Unsupervised Training for Disambiguation
Michaela Atterer | Hinrich Schütze
Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions

2004

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New Statistical Methods for Phrase Break Prediction
Helmut Schmid | Michaela Atterer
COLING 2004: Proceedings of the 20th International Conference on Computational Linguistics

2002

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Integrating Linguistic and Performance-Based Constraints for Assigning Phrase Breaks
Michaela Atterer | Ewan Klein
COLING 2002: The 19th International Conference on Computational Linguistics