Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An excellent reference

I found this book to be invaluable as a comprehensive source of information about telecommunications networks and related subjects. Unlike many other texts, this book does not assume that the reader is a consultant in the industry or has a strong engineering background. Even the choice of each chapter subject is carefully thought out so as to save the time and effort required of the businessperson who needs focused knowledge quickly. Pecar and Garbin do a great service by providing an outline, or basis for research of the expansive technologies and practical and historical approaches to the challenge of telecommunications. This book will see a lot of use in my office.. if I can keep it there.. It usually ends up in somebody elses!.