Coarse-to-Fine Natural Language Processing

Coarse-to-Fine Natural Language Processing

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The impact of computer systems that can understand natural language will be tremendous. To develop this capability we need to be able to automatically and efficiently analyze large amounts of text. Manually devised rules are not sufficient to provide coverage to handle the complex structure of natural language, necessitating systems that can automatically learn from examples. To handle the flexibility of natural language, it has become standard practice to use statistical models, which assign probabilities for example to the different meanings of a word or the plausibility of grammatical constructions.This book develops a general coarse-to-fine framework for learning and inference in large statistical models for natural language processing.Coarse-to-fine approaches exploit a sequence of models which introduce complexity gradually. At the top of the sequence is a trivial model in which learning and inference are both cheap. Each subsequent model refines the previous one, until a final, full-complexity model is reached. Applications of this framework to syntactic parsing, speech recognition and machine translation are presented, demonstrating the effectiveness of the approach in terms of accuracy and speed. The book is intended for students and researchers interested in statistical approaches to Natural Language Processing. Slav s work Coarse-to-Fine Natural Language Processing represents a major advance in the area of syntactic parsing, and a great advertisement for the superiority of the machine-learning approach.Eugene Charniak (Brown University)Manually devised rules are not sufficient to provide coverage to handle the complex structure of natural language, ... Unfortunately, building and working with rich probabilistic models for realworld problems has proven to be a very ... smaller parts at different scales (Cuntoor and Chellappa 2007), and similar ideas have also been applied speech recognition (Tang et al. ... In this work, we propose a principled framework in which learning and inference can be seen as two sides of theanbsp;...

Title:Coarse-to-Fine Natural Language Processing
Author: Slav Petrov, Eugene Charniak
Publisher:Springer Science & Business Media - 2011-11-03

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