This work details the implementation and applications of a query rewriting system. The book, authored by Ka Chun Kenneth Cheung, likely explores the technical aspects of developing and deploying systems designed to refine user queries for improved information retrieval. It probably covers the underlying algorithms, data structures, and methodologies employed in such systems, along with practical use cases and potential benefits in various domains.

The book appears to be a technical monograph focused on a specific area of computer science. Its subject matter suggests a readership of researchers, graduate students, or practitioners in information retrieval and related fields. The detailed focus on implementation and applications indicates a practical, albeit potentially specialized, contribution to the literature.