1 Introduction. - 1. 1 Texpros: An Overall Organization. - 1. 2 Organization of the Book. - 2 Data Model and Algebra for Office Document. - 2. 1 Related Work. - 2. 2 Formal Framework of the D_model. - 2. 3 Formalism of the D_algebra. - 2. 4 Discussion. - 2. 5 Summary. - 3 Document Categorization. - 3. 1 Data Model Concepts. - 3. 2 The Reconstruction Problem. - 3. 3 Agent-Based Filing Architecture. - 3. 4 Summary. - 4 Document Classification and Information Extraction. - 4. 1 Document Classification and Information Extraction Techniques. - 4. 2 Document Structures. - 4. 3 Organization of Document Classification and Information Extraction Components. - 4. 4 Document Layout Analysis. - 4. 5 Conceptual Analysis on Structured Part of Document. - 4. 6 Content Analysis on Unstructured Part of Document. - 4. 7 Summary. - 5 Knowledge-Based Document Classification. - 5. 1 Architecture of Knowledge-Based Document Classification. - 5. 2 Knowledge Acquisition Tool (KAT). - 5. 3 Document Type Tree Inference Engine. - 5. 4 Classification Handler (CH). - 5. 5 Summary. - 6 Document Retrieval. - 6. 1 Document Retrieval Techniques for TEXPROS. - 6. 2 Current Research on Document Retrieval. - 6. 3 Overall Architecture of Retrieval System. - 6. 4 Summary. - 7 Query Transformation. - 7. 1 System Catalog The Representation of Domain Knowledge and Meta-data Knowledge. - 7. 2 Query Transformation Mechanism. - 7. 3 Summary. - 8 Browser. - 8. 1 Object Network. - 8. 2 Architecture of Browser. - 8. 3 Browsing in TEXPROS. - 8. 4 Topic Interpreter. - 8. 5 Object Network Constructor. - 8. 6 Examples. - 8. 7 Summary. - 9 Generalizer. - 9. 1 Introduction to Generalizer. - 9. 2 Generalization and Substitution Concepts. - 9. 3 Generalization Algorithm for Detecting Erroneous Presuppositions. - 9. 4 Giving Cooperative Responses by Substitutions. - 9. 5 Summary. - References. Language: English