Flexible Query Answering Systems

__Flexible Query Answering Systems__ is an edited collection of contributed chapters. It focuses on developing computer systems capable of transforming a query into an answer with useful information. The emphasis is on problems associated with high-level intelligent answering systems. The coverage is multidisciplinary with chapters by authors from information science, logic, fuzzy systems, databases, artificial intelligence and knowledge representation. Each contribution represents a theory involving flexibility in query-answering, and each addresses specific answering problems. Coverage includes topics such as fuzzy sets in flexible querying, non-standard database interactions, metareasoning and agents, and many others. Contributions for this volume were written by leading researchers from their respective subject areas, including Patrick Bosc, Bernadette Bouchon-Meunier, Amihai Motro, Henri Prade and Ron Yager, among others. __Flexible Query Answering Systems__ is a timely contribution for researchers working on high-level query mechanism systems. Front Matter....Pages i-xiv Not All Answers are Equally Good: Estimating the Quality of Database Answers....Pages 1-21 Fuzzy Query Language for Hypothesis Evaluation....Pages 23-43 Using Fuzzy Sets in Flexible Querying: Why and How?....Pages 45-60 Nonstandard Database Interaction from Metalogic Programming....Pages 61-78 A Fuzzy Deductive Relational Database....Pages 79-101 Metareasoning Agents for Query-Answering Systems....Pages 103-121 Fuzzy Querying in a Concept Object Algebraic Datamodel....Pages 123-139 Flexible Query-Answering in a Group of Databases....Pages 141-161 Fuzzy Time Indications in Natural Languages Interfaces....Pages 163-185 Fuzzy Queries Against Regular and Fuzzy Databases....Pages 187-208 Answering Queries about Validity and Completeness of Data: From Modal Logic to Relational Algebra....Pages 209-225 Constructing Aggregation Functions Using Fuzzy Modeling....Pages 227-246 Flexible Querying Using Fuzzy Logic: An Implementation for Microsoft Access....Pages 247-275 Fuzzy Decision Trees and Databases....Pages 277-288 Back Matter....Pages 289-290