DESCRIPTIVE APPROACH LANGUAGE-THEORETIC COMPLEXITY
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DESCRIPTIVE APPROACH LANGUAGE-THEORETIC COMPLEXITY

Early formal specifications of natural language syntax were quite closely connected to the notion of abstract machines for computing them. More recently, this approach has been superseded by one in which languages are specified in terms of systems of constraints on the structure of their sentences. This has made complexity results difficult to obtain. This book introduces a way of obtaining such results. It presents a natural and quite general means of expressing constraints on the structure oftrees and shows that the languages that can be specified by systems of such constraints are exactly those computable by a particular standard class of abstract machines. Thus the difficulty of processing a construction can be reduced to the difficulty of expressing the constraints that specify it.
Editora: CENTER FOR THE STUDY OF LANGUAGE AND INFORMATION
ISBN: 1575861364
ISBN13: 9781575861364
Edição: 1ª Edição - 1998
Número de Páginas: 220
Acabamento: PAPERBACK
Formato: 15.20 x 22.40 cm.
por R$ 82,21