Abstract

The standard classification of ellipsis has determined the way it is handled in natural language understanding (NLU) systems. This work provides a novel classification of ellipsis based on the analysis of ellipsis usage rather than forms in a corpus of information seeking dialogues. The aim is to demonstrate that pragmatic analysis is necessary for the interpretation of ellipsis. The context, in terms of the dialogue participants' belief states, determines interpretation and in turn the interpretation of subsequent utterances. The dialogues produced in a NLU system using this classification are presented.

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