Rieks op den Akker


2011

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Generating Varied Narrative Probability Exercises
Mariët Theune | Roan Boer Rookhuiszen | Rieks op den Akker | Hanneke Geerlings
Proceedings of the Sixth Workshop on Innovative Use of NLP for Building Educational Applications

2009

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Are You Being Addressed? - Real-Time Addressee Detection to Support Remote Participants in Hybrid Meetings
Harm op den Akker | Rieks op den Akker
Proceedings of the SIGDIAL 2009 Conference

2008

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Exploiting ‘Subjective’ Annotations
Dennis Reidsma | Rieks op den Akker
Coling 2008: Proceedings of the workshop on Human Judgements in Computational Linguistics

2007

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Computing Backchannel Distributions in Multi-Party Conversations
Dirk Heylen | Rieks op den Akker
Proceedings of the Workshop on Embodied Language Processing

2006

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Addressee Identification in Face-to-Face Meetings
Natasa Jovanovic | Rieks op den Akker | Anton Nijholt
11th Conference of the European Chapter of the Association for Computational Linguistics

2005

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A Corpus for Studying Addressing Behavior in Multi-Party Dialogues
Natasa Jovanovic | Rieks op den Akker | Anton Nijholt
Proceedings of the 6th SIGdial Workshop on Discourse and Dialogue

2004

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Towards Automatic Addressee Identification in Multi-party Dialogues
Natasa Jovanovic | Rieks op den Akker
Proceedings of the 5th SIGdial Workshop on Discourse and Dialogue at HLT-NAACL 2004

2002

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Dialogue Act Recognition with Bayesian Networks for Dutch Dialogues
Simon Keizer | Rieks op den Akker | Anton Nijholt
Proceedings of the Third SIGdial Workshop on Discourse and Dialogue

1995

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Parsing in Dialogue Systems Using Typed Feature Structures
Rieks op den Akker | Hugo ter Doest | Mark Moll | Anton Nijholt
Proceedings of the Fourth International Workshop on Parsing Technologies

The analysis of natural language in the context of keyboard-driven dialogue systems is the central issue addressed in this paper. A module that corrects typing errors, performs domain-specific morphological analysis is developed. A parser for typed unification grammars is designed and implemented in C++; for description of the lexicon and the grammer a specialised specification language is developed. It is argued that typed unification grammars and especially the newly developed specification language are convenient formalisms for describing natural language use in dialogue systems. Research on these issues is carried out in the context of the SCHISMA project, a research project in linguistic engineering; participants in SCHISMA are KPN Research and the University of Twente.

1994

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Weakly Restricted Stochastic Grammars
Rieks op den Akker | Hugo ter Doest
COLING 1994 Volume 2: The 15th International Conference on Computational Linguistics

1993

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Predictive Head-Corner Chart Parsing
Klaas Sikkel | Rieks op den Akker
Proceedings of the Third International Workshop on Parsing Technologies

Head-Corner (HC) parsing has come up in computational linguistics a few years ago, motivated by linguistic arguments. This idea is a heuristic, rather than a fail-safe principle, hence it is relevant indeed to consider the worst-case behaviour of the HC parser. We define a novel predictive head-corner chart parser of cubic time complexity. We start with a left-corner (LC) chart parser, which is easier to understand. Subsequently, the LC chart parser is generalized to an HC chart parser. It is briefly sketched how the parser can be enhanced with feature structures.