A LTAG Grammar for Parsing Oral and Incomplete Utterances.
Patrice Lopez · 1998
. A robust natural langage interface must handle incomplete utterances normally used by humans. These discourse phenomena are very common in task-oriented manmachine and question-answering dialogues. In this paper, I present the principles needed to adapt a LTAG grammar for complete written texts to oral and incomplete utterances. The resulting grammar can detect and predict possible ellipsis which manifest themselves as syntactically incomplete LTAG structures. 1 INTRODUCTION Incomplete utterances are common in communication between humains. Empirical studies [5] show that users of natural language system can avoid complex syntax but find it difficult to employ complete expressions instead of fragmentary utterances. In the field of natural langage interface and syntatic analysis of spontaneous oral utterances, parsing presents two aspects : prediction of the possible combination of words and interpreting. In oral discourse, utterances can be very incomplete (ellipsis) and difficult ...