Joris Hulstijn Rene Steetskamp Hugo Ter Doest

Topics in SCHISMA Dialogues

An important part of dialogue management in a dialogue system is topic management: The system has to keep track of topic aspects (current topic, context, obligations, : : : ) in order to be able to resolve ambiguities and to respond in a cooperative and sensible way. In the schisma project, we are developing a system that takes part in a conversation about theater performances and is able to ma...

Weakly Restricted Stochastic Grammars

A new type of stochastic grammars is introduced for investigation: weakly restricted stochastic grammars. In this paper we will concentrate on the consistency problem. To nd conditions for stochastic grammars to be consistent, the theory of multitype Galton-Watson branching processes and generating functions is of central importance. The unrestricted stochastic grammar formalism generates the s...

Retrieval contexts and the concreteness effect: Dissociations in memory for concrete and abstract words

words

Parsing in Dialogue Systems Using Typed Feature Structures

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-speci c morphological analysis is developed. A parser for typed uni cation grammars is designed and implemented in C++; for description of the lexicon and the grammer a specialised speci cation language is develop...

Negotiation Proto ols and Dialogue Games