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This book presents the most complete exposition of the theory of head-driven phrase structure grammar (HPSG), introduced in the authors' Information-Based Syntax and Semantics. HPSG provides an integration of key ideas from the various disciplines of cognitive science, drawing on results from diverse approaches to syntactic theory, situation semantics, data type theory, and knowledge representation. The result is a conception of grammar as a set of declarative and order-independent constraints, a conception well suited to modelling human language processing. This self-contained volume demonstrates the applicability of the HPSG approach to a wide range of empirical problems, including a number which have occupied center-stage within syntactic theory for well over twenty years: the control of "understood" subjects, long-distance dependencies conventionally treated in terms of wh-movement, and syntactic constraints on the relationship between various kinds of pronouns and their antecedents. The authors make clear how their approach compares with and improves upon approaches undertaken in other frameworks, including in particular the government-binding theory of Noam Chomsky.
Recent years have seen a revival of interest in morphology. The Yearbook of Morphology series supports and enforces this upswing of morphological research and gives an overview of the current issues and debates at the heart of this revival. The Yearbook of Morphology 1994 focuses on prosodic morphology, i.e. the interaction between morphological and prosodic structure, on the semantics of word formation, and on a number of related issues in the realm of inflection: the structure of paradigms, the relation between inflection and word formation, and patterns of language change with respect to inflection. There is also discussion of the relevance of the notion `level ordering' for morphological generalizations. All theoretical and historical linguists, morphologists, and phonologists will want to read this book.
presupposition fails, we now give a short introduction into Unification Grammar. Since all implementations discussed in this volume use PROLOG (with the exception of BlockjHaugeneder), we felt that it would also be useful to explain the difference between unification in PROLOG and in UG. After the introduction to UG we briefly summarize the main arguments for using linguistic theories in natural language processing. We conclude with a short summary of the contributions to this volume. UNIFICATION GRAMMAR 3 Feature Structures or Complex Categories. Unification Grammar was developed by Martin Kay (Kay 1979). Martin Kay wanted to give a precise defmition (and implementation) of the notion of 'f...
Hitherto, the three symmetric coordination types Phrasal Coordination, Right Node Raising, and Gapping have been mostly treated in isolation. This book presents a successful attempt at developing a uniform approach - couched in a transformational framework, but also applicable to other grammatical approaches. But the account not only provides a common frame for coordination. In effect, it does away with the strict distinction between simplex and coordinate structures. The proposed approach - based on a natural extension to the classical X-scheme - is equally valid for both simplex and coordinate structures, and, thus, it presents a significant contribution to grammars of phrasal structures in general.
This volume is the proceedings of the Second Advanced School on Artificial Intelligence (EAIA '90) held in Guarda, Portugal, October 8-12, 1990. The focus of the contributions is natural language processing. Two types of subject are covered: - Linguistically motivated theories, presented at an introductory level, such as X-bar theory and head- driven phrase structure grammar, - Recent trends in formalisms which will be familiar to readers with a background in AI, such as Montague semantics and situation semantics. The topics were chosen to provide a balanced overview of the most important ideas in natural language processing today. Some of the results presented were worked out very recently, are the subject of ongoing research, and have not previously appeared in book form. This book may serve as a textbook: in fact its contents were intended as lecture notes.