functional unification grammar revisited

... simple changes in the unification algorithm. The fast change involved immediately selecting the correct category for unification from the grammar whenever possible. Since the grammar is represented ... 410 CPU seconds to process all sentences, or 7 CPU seconds per sentence. 101 Functional Unification Grammar Revisited Kathleen R. McKeown and Cecile L. Paris Department of Computer Science ... be distributed over the grammar, sometimes represented in tests on rules and sometimes represented in the rule itself. The systcmic's grammar use of features and functional categories...

Ngày tải lên: 17/03/2014, 20:20

... importance. Lexical Functional Grammar and Generalized Phrase-Structure grammar share these relational and monotonic properties. They are also characteristics of Functional Unificational Grammar (FUG) ... a grammar with another grammar to produce a new grammar, but it is also possible to unify a grammar with a FD, in which case the result is a new FD. The rules for unifying grammars with grammars ... FUNCTIONAL UNIFICATION GRAMMAR: A FORMALISM FOR MACHINE TRANSLATION Martin Kay Xerox Palo Alto Research...

Ngày tải lên: 17/03/2014, 19:21

... England, 1976. [Kas87a I Robert T. Kasper. Systemic Grammar and Func- tional Unification Grammar. In J. Benson and W. Greaves, editors, SVstemic Functional Approaches to Discourse, Norwood, New ... features. Such conditional descriptions can be indirectly modeled in Kay's Functional Unification Grammar (FUG) using functional descriptions that are embedded within disjunctive alternatives. ... notational extension to any of the unification- based gram° mar representation systems currently used in computational linguistics. 1 Introduction Functional Unification Grammar [Kay79] (FUG) and other...

Ngày tải lên: 17/03/2014, 20:20

... is based on unification. The reason we have chosen a unification- based approach is that it enables us to describe grammar declaratively, making the development and amendment of grammar easy. ... logical- constraint-based internal representation from a unifica- tion grammar formalism with disjunctive information. Unification grammar formalisms based on path equa- tions and lists of pairs ... represents a disjunct. 3.2 Unification by Logical Constraint Transformation Unification of DFSs corresponds to logical constraint satisfaction. For example, the unification of DFSs p(X) and...

Ngày tải lên: 20/02/2014, 18:20

... overview of Structure Unification Grammar, then present the parser design, and finally a sketch of its implementation. STRUCTURE UNIFICATION GRAMMAR Structure Unification Grammar is a formaliza- ... Adjoin- ing Grammar, Description Theory (Marcus et al., 1983), Combinatory Categorial Grammar, Lexi- cal Functional Grammar, and Head-driven Phrase Structure Grammar. An SUG grammar is a ... GRAMMARS The grammars which are supported by the parser are a subset of those for Structure Unification Grammar. These grammars are for the most part lexicalized. Each lexicalized grammar entry...

Ngày tải lên: 20/02/2014, 21:20

... VoI.I: Categorial Grammar, Unification Grammar, and Parsing. Cemre for Cognitive Science, Univ. of Edinburgh, Scodand. 236 They cort~pond to forward (2) end backward O) functional application, ... Uszkoreit (1986) introduces Categorial Unification Grammar (CUG) as a class of grammars which combine the features of categorial granunars with those of unification granmlars. In CUG, directed ... Modifiers and Specifiers in Categurial Unification Grammar. Liagaistica, 26(1), 21-46. Bouma, Gosse, Ester Koanig, and Hans Uszkoreit. (1988). A Flexible Graph -Unification Formalism and its Application...

Ngày tải lên: 21/02/2014, 20:20

... been developed and tested on a small lexicon, a Markov language model, and a simple set of unification grammar rules for the Chinese language, although the present model is in fact language independent. ... verbs have complicated behavior and will play a central role in syntactic analysis, The unification grammar constructed includes about 60 rules. It is believed that these rules cover almost ... F., Chen, K. J. and Lee, L. S. (1990b). An Augmented Chart Parsing Algorithm Integrating Unification Grammar and Markov Language Model for Continuous Speech Recognition. Proceedings of the...

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... 27 1.4 Grammar Like transformational theory, LFG is a variety of generative grammar, an approach to the study of language that has its origins in the work of Noam Chomsky. Generative grammar ... “V-to-I movement.”) Even within the more limited role assigned to functional categories under the Lexical Integrity Principle, there are additional candidates for functional categories. The clearest case is the ... of transformational syntax. This book is about one such alternative approach to syntax: Lexical -Functional Grammar, or LFG. LFG rejects the assumptions of transformational theory, not its goals. The...

Ngày tải lên: 24/01/2014, 05:20

... the nature of label unification, the unification procedure does not guarantee that the unification of two S-graphs will be functional and thus well-formed. To insure functionality, we filter ... operation of the system is S-graph unification (S -unification) : This is essentially ordinary feature-structure unification augmented with an operation of label unification to build the stratified ... implemented unification- based parser for relational grammars developed within the stratified feature grammar (SFG) frame- work, which generalizes Kasper-Rounds logic to handle relational grammar...

Ngày tải lên: 20/02/2014, 21:20

... minus-honorific-word. 3.2. A Unification- based Lexical Approach A unification- based lexicalism approach is adopted here for describing Japanese honorifics for the following reasons: (a) a unification- based ... identity relation between two feature structures. 142 PARSING JAPANESE HONORIFICS IN UNIFICATION- BASED GRAMMAR Hiroyuki MAEDA, Susumu KATO, Kiyoshi KOGURE and Hitoshi IIDA ATR Interpreting ... 540, Japan Abstract This paper presents a unification- based approach to Japanese honorifics based on a version of HPSG (Head-driven Phrase Structure Grammar) ll]121. Utterance parsing is based...

Ngày tải lên: 21/02/2014, 20:20