Paper: A Flexible Natural Language Parser Based On A Two-Level Representation Of Syntax

ACL ID E83-1020
Title A Flexible Natural Language Parser Based On A Two-Level Representation Of Syntax
Venue Annual Meeting of The European Chapter of The Association of Computational Linguistics
Session Main Conference
Year 1983
Authors

In this paper we present a parser which al lows to make explicit the interconnections between syntax and semantics, to analyze the sentences in a quasi-deterministic fashion and, in many cases, to identify the roles of the various constituents even if the sentance is ill-formed. The main fea ture of the approach on which the parser is based consists in a two-level representation of the sy_n tactic knowledge: a first set of rules emits h~ potheses about the constituents of the sentence and their functional role and another set of rules verifies whether a hypothesis satisfies the con straints about the well-formedness of sentences. However, the application of the second set of rules is delayed until the semantic knowledge con firms the acceptability of the hypothesis. If the semantics reject...