Speech and Language Processing: An Introduction to Natural Language Processing, Computational Linguistics, and Speech RecognitionFor undergraduate or advanced undergraduate courses in Classical Natural Language Processing, Statistical Natural Language Processing, Speech Recognition, Computational Linguistics, and Human Language Processing.
An explosion of Web-based language techniques, merging of distinct fields, availability of phone-based dialogue systems, and much more make this an exciting time in speech and language processing. The first of its kind to thoroughly cover language technology - at all levels and with all modern technologies - this text takes an empirical approach to the subject, based on applying statistical and other machine-learning algorithms to large corporations. The authors cover areas that traditionally are taught in different courses, to describe a unified vision of speech and language processing. Emphasis is on practical applications and scientific evaluation. An accompanying Website contains teaching materials for instructors, with pointers to language processing resources on the Web. The Second Edition offers a significant amount of new and extended material.
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... measures are not appropriate . Instead , chunkers are evaluated according to the notions of precision , recall , and the F - measure borrowed from the field of information retrieval . Precision measures the percentage of system ...
... measure The standard techniques for evaluating parsers and grammars are called the PARSE- VAL measures ; they were proposed by Black et al . ( 1991 ) and were based on the same ideas from signal - detection theory that we saw in earlier ...
... measure was a binary value for each feature , 1 if the relevant word had occurred in the context , 0 if not . In the example in Fig . 20.10 , we used a richer association measure , the relative frequency with which the particular ...
Other editions - View all
Speech and Language Processing: An Introduction to Natural Language ... Daniel Jurafsky,James H. Martin No preview available - 2009 |