Preference Query Analysis and Optimization

Download or read book Preference Query Analysis and Optimization written by Yunjun Gao and published by Springer. This book was released on 2017-11-02 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes unexpected preference query results for three problems: causality and responsibility problems, why-not and why questions, and why-few and why-many questions. Further, it refines preference queries and discusses how to modify the original preference query based on different objectives, in order to obtain satisfying results. This highly informative and carefully presented book provides valuable insights for researchers, postgraduates and practitioners with an interest in database usability.