With a Foreword by Alfred Kobsa.
The research on user modeling has developed a broad range of elaborated algorithms and techniques to support user adaptive applications with information about their users. Several empirical studies demonstrate their benefits in areas like education and training, online help for complex software, dynamic information delivery, etc. The main obstacles to wide-spread use of such systems have always been users' objections and to some extent laws regarding the usage of person-related data.

This book offers a comprehensive analysis of security requirements...