tailieunhanh - Báo cáo khoa học: "ATOMIZATION IN GRAMMAR SHARING"

We describe a prototype SK~RED CmAt~eAR for the syntax of simple nominal expressions in Arabic, E~IL~lx, French, German, and Japanese implemented at MCC. In this Oamm~', a complex inheritance ian/cc of shared gr~mmAtlcal templates provides pans that each language can put together to form lansuug~specific gramm-ti~tl templates. We conclude that grammar shsrin8 is not only possible but also desirable. It forces us to reveal crossliuguistically invm'iant grammatie~ primitives that may otherwise r e m ~ conflamd with other primitives if we deal only with a single ~.nousge or l-n~uuge type. . | ATOMIZATION IN GRAMMAR SHARING Megumi Kameyama Microelectronics and Computer Technology Cooperation MCC 3500 West Balcones Center Drive Austin Texas 78759 megumi@ ABSTRACT We describe a prototype SHARED GRAMMAR for the syntax of simple nominal expressions in Arabic English French German and Japanese implemented at MCC. In this grammar a complex inheritance lattice of shared grammatical templates provides parts that each language can put together to form language-specific grammatical templates. We conclude that grammar sharing is not only possible but also desirable. It forces us to reveal cross-linguistically invariant grammatical primitives that may otherwise remain conflated with other primitives tf we deal only with a single language or language type. We call this the process of GRAMMATICAL ATOMIZATION. The specific implementation reported here uses categorial unification grammar. The topics include the mono-level nominal category N the functional distinction between ARGUMENT and NON-ARGUMENT of nominals grammatical agreement and word order types. Is grammar sharing possible The multilingual project of MCC attempts to build a grammatical system hierarchically shared by multiple languages Slocum Justus 1985 . GRAMMAR SHARING as proposed should have an advantage over a system with separate grammars for different languages It should reduce the size of a multilingual rule base and facilitate the addition of new languages. Before presenting evidence for such advantages however there is the basic question to be answered Is grammar sharing at all possible Although it is well known that languages possess similarities based on genetic typological or areal grounds the question remains whether and how these similarities translate into computational techniques. In this paper we will describe a prototype shared grammar for simple nominal expressions in Arabic English French German and We conclude that grammar sharing is not only possible but also desirable.