This is a study of how children acquire language and how this affects language change over generations. Written by an international team of experts, the volume proceeds from the basis that we can not only address the language faculty per se within the framework of evolutionary theory, but also the origins and subsequent development of languages themselves; languages evolve via cultural rather than biological transmission on a historical rather than genetic timescale. The book is distinctive in utilizing computational simulation and modelling to help ensure the theories constructed are complete and precise. Drawing on a wide range of examples, the book covers the why and how of specific syntactic universals; the nature of syntactic change; the language-learning mechanisms required to acquire an existing linguistic system accurately and to impose further structure on an emerging system; and the evolution of language(s) in relation to this learning mechanism.

The lexicon is now a major focus of research in computational linguistics and natural language processing (NLP), as more linguistic theories concentrate on the lexicon and as the acquisition of an adequate vocabulary has become the chief bottleneck in developing practical NLP systems. This collection describes techniques of lexical representation within a unification-based framework and their linguistic application, concentrating on the issue of structuring the lexicon using inheritance and defaults. Topics covered include typed feature structures, default unification, lexical rules, multiple inheritance and non-monotonic reasoning. The contributions describe both theoretical results and implemented languages and systems, including DATR, the Stuttgart TFS and ISSCO's ELU. This book arose out of a workshop on default inheritance in the lexicon organized as a part of the Esprit ACQUILEX project on computational lexicography. Besides the contributed papers mentioned above, it contains a detailed description of the ACQUILEX lexical knowledge base (LKB) system and its use in the representation of lexicons extracted semi-automatically from machine-readable dictionaries.

This groundbreaking study of how children acquire language and the effects on language change over the generations draws on a wide range of examples. The book covers specific syntactic universals and the nature of syntactic change. It reviews the language-learning mechanisms required to acquire an existing linguistic system (accurately and to impose further structure on an emerging system) and the evolution of language(s) in relation to this learning mechanism.

The lexicon is now a major focus of research in computational linguistics and natural language processing (NLP), as more linguistic theories concentrate on the lexicon and as the acquisition of an adequate vocabulary has become the chief bottleneck in developing practical NLP systems. This collection describes techniques of lexical representation within a unification-based framework and their linguistic application, concentrating on the issue of structuring the lexicon using inheritance and defaults. Topics covered include typed feature structures, default unification, lexical rules, multiple inheritance and non-monotonic reasoning. The contributions describe both theoretical results and implemented languages and systems, including DATR, the Stuttgart TFS and ISSCO's ELU. This book arose out of a workshop on default inheritance in the lexicon organized as a part of the Esprit ACQUILEX project on computational lexicography. Besides the contributed papers mentioned above, it contains a detailed description of the ACQUILEX lexical knowledge base (LKB) system and its use in the representation of lexicons extracted semi-automatically from machine-readable dictionaries.