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Describes the problems and issues involved in generating interactive user-sensitive explanations.

Explanation and Interaction describes the problems and issues involved in generating interactive user-sensitive explanations. It presents a particular computational system that generates tutorial, interactive explanations of how simple electronic circuits work. However, the approaches and ideas in the book can be applied to a wide range of computer applications where complex explanations are provided, such as documentation, advisory, and expert systems. The approach presented is based on an analysis of human explanatory discourse, and simple techniques for text planning, dialogue management, and user modeling are developed and used in the system. Cawsey describes in detail the issues involved in text planning, dialogue management, and user modeling, and presents a particular approach in enough detail that practical systems may be developed based on the ideas. Because the book addresses a wide range of issues in a single system, it is appropriate as a general introduction to discourse processing and user-adapted interaction.

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CONTENTS
Acknowledge ments = vii
1 Introduction = 1
 1.1 The Problem = 1
 1.2 The Approach = 5
 1.3 Example System Diaolgue = 8
 1.4 Brief Overview of Related Reserch = 11
 1.5 Guide to Remaining Chapters = 12
2 Analyzing Human Explanatory Dialogues = 15
 2.1 Analyzing Content Organization = 17
 2.2 Analyzing Dialogue Structure = 28
 2.3 The Relation between Content Organization and Dialogue Structure = 45
 2.4 Toward a Computational Model of Explanatory Discourse = 47
 2.5 Conclusion = 50
3 Planning Explanation Content = 53
 3.1 Principles Governing the Structure and Content of Texts = 54
 3.2 The Problem of Text Planning = 59
 3.3 Planning Informative Explanations = 64
 3.4 The EDGE Explanatory Text Planner = 67
 3.5 Conclusion = 87
4 Managing the Dialogue with the User = 89
 4.1 Explaining the Organization of Dialogues = 89
 4.2 The Development of Dialogue Systems = 96
 4.3 Generating Explanatory Dialogues = 100
 4.4 Dialogue Planning in the EDGE System = 103
 4.5 Conclusion = 125
5 Updating the User Model = 129
 5.1 Issues in User Modeling = 129
 5.2 The EDGE User Modeling System = 134
 5.3 Conclusion = 143
6 Application and Examples: Explaining How Circuits Work = 145
 6.1 Explaining the Behavior of Physical Systems = 145
 6.2 The EDGE Circuit Explainer = 149
 6.3 Conclusion = 162
7 Evaluation and Conclusion = 169
 7.1 Empirical Evaluation = 169
 7.2 Assessment and Further Work = 176
 7.3 Conclusion: Contributions and Applications = 182
A Human Circuit Explanations = 185
B Planning Rules and Domain Knowledge = 199
C Example Dialogues with Real Users = 211
D Example Displays = 219
Bibliography = 221
Index = 229