Natural language understanding is central to the goals of artificial intelligence. Any truly intelligent machine must be capable of carrying on a conversation: dialogue, particularly clarification dialogue, is essential if we are to avoid disasters caused by the misunderstanding of the intelligent interactive systems of the future. This book is an interim report on the grand enterprise of devising a machine that can use natural language as fluently as a human. What has really been achieved since this goal was first formulated in Turing’s famous test? What obstacles still need to be overcome?

Natural language understanding is central to the goals of artificial intelligence. Any truly intelligent machine must be capable of carrying on a conversation: dialogue, particularly clarification dialogue, is essential if we are to avoid disasters caused by the misunderstanding of the intelligent interactive systems of the future. This book is an interim report on the grand enterprise of devising a machine that can use natural language as fluently as a human. What has really been achieved since this goal was first formulated in Turing’s famous test? What obstacles still need to be overcome?

In this volume, the author reviews the results of research on language performance and proposes a model of production and comprehension. Although recent developments in linguistics are taken into account, consideration of other requirements of a performance model leads to the conclusion that the grammar the speaker has in mind differs from the grammar as currently conceived of by most linguists. The author is also critical of recent computer simulations of language performance on the basis that they fall short of describing what goes on in human production and comprehension. The author therefore proposes that the basic issues must be rethought and new theoretical foundations reformulated, in order to arrive at a viable theory of language functioning. In developing the framework of the model presented in this book, requirements of flexibility in the performance mechanisms, the probabilistic nature of comprehension processes, and the interleaving of linguistic rules with context and knowledge of the world are emphasized.

In the last few years categorial grammars have been the focus of dramatically expanded interest and activity, both theoretical and computational. This book, the first introduction to categorical grammars, is written as an objective critical assessment. Categorial grammars offer a radical alternative to the phrase-structure paradigm, with deep roots in the philosophy of language, logic and algebra. Mary McGee Wood outlines their historical evolution and discusses their formal basis, starting with a quasi-canonical core and considering a number of possible extensions. She also explores their treatment of a number of linguistic phenomena, including passives, raising, discontinuous dependencies and non-constituent coordination, as well as such general issues as word order, logic, psychological plausibility and parsing. This introduction to categorial grammars will be of interest to final year undergraduate and postgraduate students and researchers in current theories of grammar, including comparative, descriptive, and computational linguistics.

This book presents an account of certain problems of morphological analysis that occurs within a theoretical framework that derives its inspiration from recent studies of the lexicon in generative grammar. The starting point is the controversy about the proper analysis of synthetic compounds. Are they really compounds, or phrasal derivations, or do they constitute a type of word formation of their own?

This book is a collection of linguistic and philosophical papers dealing with the semantic problems of determiners. The language under investigation is mostly English, although a few papers deal with French and German, and, to a lesser extent, with Dutch, Polish, Russian and Hebrew. The majority of the contributions focus on the semantics of the definite and indefinite articles, leading into discussions of anaphoricness, specificness, opacity and transparency, referentiality and attributiveness and genericness. The relation of the determiners to other parts of grammar, in particular relativisation and predication, is also investigated. Some attention is also given to quantifiers. In the spirit of pluralism, there is no single paradigm unifying all the papers, rather, the volume reflects elements of the Extended Standard Theory, Generative Semantics, Montague Grammar, (Gricean) Pragmatics and Speech Act Theory.

This book examines the frequencies of the six possible basic word (or constituent) orders (SOV, SVO, VSO, VOS, OSV, OVS) provides a typologically grounded explanation for those frequencies in terms of three independent, functional principles of linguistic organization. From a database of nearly 1,000 languages and their basic constituent orders, a sample of 400 languages was produced that is statistically representative of both the genetic and areal distributions of the world’s languages. This sample reveals the following relative frequencies (in order from high to low) of basic constituent order types: (1) SOV and SVO, (2) VSO, (3) VOS and OVS, (4) OSV. It is argued that these relative frequencies can be explained to be the result of the possible interactions of three fundamental functional principles of linguistic organization. Principle 1, the thematic information principle, specifies that initial position is the cross-linguistically favoured position for clause-level thematic information. Principle 2, the verb-object bonding principle, describes the cross-linguistic tendency for a transitive verb and its object to form a more tightly integrated unit, syntactically and semantically, than does a transitive verb and its subject. Principle 3, the animated principle, describes the cross-linguistic tendency for semantic arguments which are either more animate or more agentive to occur earlier in the clause. Each principle is motivated independently of the others, drawing on cross-linguistic data from more than 80 genetically and typologically diverse languages. Given these three independently motivated functional principles, it is argued that the relative frequency of basic constituent order types is due to the tendency for the three principles to be maximally realized in the world’s languages. SOV and SVO languages are typologically most frequent because such basic orders reflect all three principles. The remaining orders occur less frequently because they reflect fewer of the principles. The 1,000-language database and the genetic and areal classification frames are published as appendices to the volume.