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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... answer questions about corporate information pages , we still use an IR engine to search our documents for us . But for this smaller set of documents , we generally need to apply query expansion . On the Web the answer to a question ...
... answers to some questions, such as DEFINITION questions, don't tend to be of a particular named entity type. For some questions, then, instead of using answer types, we use hand-written regular expression patterns to help extract the answer ...
... answer pattern extrac- tion, are still not sufficient for answer extraction. Not every relation is signaled by unambiguous surrounding words or ... answer-extraction methods, the 786 Chapter 23. Question Answering and Summarization.
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Speech and Language Processing: An Introduction to Natural Language ... Daniel Jurafsky,James H. Martin No preview available - 2009 |