New Directions in Question Answering

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Question answering systems, which provide natural language responses to natural language queries, are the subject of rapidly advancing research encompassing both academic study and commercial applications, the most well-known of which is the search engine Ask Jeeves. Question answering draws on different fields and technologies, including natural language processing,information retrieval, explanation generation, and human computer interaction. Question answering creates an important new method of information ...

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Overview

Question answering systems, which provide natural language responses to natural language queries, are the subject of rapidly advancing research encompassing both academic study and commercial applications, the most well-known of which is the search engine Ask Jeeves. Question answering draws on different fields and technologies, including natural language processing,information retrieval, explanation generation, and human computer interaction. Question answering creates an important new method of information access and can be seen as the natural step beyond such standard Web search methods as keyword query and document retrieval. This collection charts significant new directions in the field, including temporal, spatial, definitional, biographical,multimedia, and multilingual question answering.After an introduction that defines essential terminology and provides a roadmap to future trends, the book covers key areas of research and development. These include current methods, architecture requirements, and the history of question answering on the Web; the development of systems to address new types of questions; interactivity,which is often required for clarification of questions or answers; reuse of answers; advanced methods; and knowledge representation and reasoning used to support question answering. Each section contains an introduction that summarizes the chapters included and places them in context, relating them to the other chapters in the book as well as to the existing literature in the field and assessing the problems and challenges that remain.

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Product Details

Meet the Author

Mark Maybury is Executive Director of the Information Technology Division at the MITRECorporation.

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Table of Contents

Preface
Ch. 1 Question answering : an introduction 3
Ch. 2 Software architectures for advanced QA 19
Ch. 3 Bringing commercial question answering to the Web 31
Ch. 4 Answering definitional questions : a hybrid approach 47
Ch. 5 A hybrid approach to answering biographical questions 59
Ch. 6 Question answering in terminology-rich technical domains 71
Ch. 7 Low-level annotations and summary representations of opinions for multiperspective QA 87
Ch. 8 Representing temporal and event knowledge for QA systems 99
Ch. 9 Answering questions about moving objects in videos 113
Ch. 10 A data driven approach to interactive QA 129
Ch. 11 Finding answers to complex questions 141
Ch. 12 Experiences from combining dialogue system development with information extraction techniques 153
Ch. 13 Reuse in question answering : a preliminary study 169
Ch. 14 Retrieval models and Q and A learning with FAQ files 183
Ch. 15 Holistic query expansion using graphical models 203
Ch. 16 Viewing the Web as a virtual database for question answering 215
Ch. 17 Toward answer-focused summarization using search engines 227
Ch. 18 A multi-agent approach to using redundancy and reinforcement in question answering 237
Ch. 19 Deductive question answering from multiple resources
Ch. 20 Advanced relaxation for cooperative question answering 263
Ch. 21 Trusting answers from Web applications 275
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