The massive growth of the Internet has made an enormous amount of infor- tion available to us. However, it is becoming very difficult for users to acquire an - plicable one. Therefore, some techniques such as information filtering have been - troduced to address this issue. Recommender systems filter information that is useful to a user from a large amount of information. Many e-commerce sites use rec- mender systems to filter specific information that users want out of an overload of - formation [2]. For example, Amazon. com is a good example of the success of - commender systems [1]. Over the past several years, a considerable amount of research has been conducted on recommendation systems. In general, the usefulness of the recommendation is measured based on its accuracy [3]. Although a high - commendation accuracy can indicate a user's favorite items, there is a fault in that - ly similar items will be recommended. Several studies have reported that users might not be satisfied with a recommendation even though it exhibits high recommendation accuracy [4]. For this reason, we consider that a recommendation having only accuracy is - satisfactory. The serendipity of a recommendation is an important element when c- sidering a user's long-term profits. A recommendation that brings serendipity to users would solve the problem of user weariness and would lead to exploitation of users' tastes. The viewpoint of the diversity of the recommendation as well as its accuracy should be required for future recommender systems.

The papers in this volume were peer-reviewed and carefully selected Much information in this series is published in advance of journal publication The contributors in this volume are world-renowned experts in their field

Klappentext

International Federation for Information Processing

The IFIP series publishes state-of-the-art results in the sciences and technologies of information and communication. The scope of the series includes: foundations of computer science; software theory and practice; education; computer applications in technology; communication systems; systems modeling and optimization; information systems; computers and society; computer systems technology; security and protection in information processing systems; artificial intelligence; and human-computer interaction. Proceedings and post-proceedings of refereed international conferences in computer science and interdisciplinary fields are featured. These results often precede journal publication and represent the most current research. The principal aim of the IFIP series is to encourage education and the dissemination and exchange of information about all aspects of computing.

For more information about the 300 other books in the IFIP series, please visit www.springer.com.

For more information about IFIP, please visit www.ifip.org.

Inhalt
Organized Session.- eService Innovation and Sensor Based Healthcare.- Research Track.- Decision Making Model for Online Music Service Users.- Intraday-scale Long Interval Method of Classifying Intramonth-Scale Revisiting Mobile Users.- The Study of Customer Segmentation Examined by Catastrophe Model.- A Procedure of How to Conduct Research in Transparent Mobile Recommendations.- Development of Recommender Systems Using User Preference Tendencies: An Algorithm for Diversifying Recommendation.- Cryptographic Approch for Workflow Systems.- A Fuzzy Model for Scalable Trust in E-Commerce.- Extending RBAC for Large Enterprises and Its Quantitative Risk Evaluation.- Presence-Based Runtime Composition of IMS Services Deployed in a SIP Servlet Platform.- A Service Oriented and Agent-Based Architecture for the e-Collaboration of SMEs.- Autonomous Web Services Based on Dynamic Model Harmonization.- A Nonlinear Representation of Page History in P2P Wiki System.- Distributed Secure Virtual File System Using FUSE.- Pricing for Maximizing Provider's Revenue in Multicast Content Delivery Services.- Personalized Public-Transport Guidance Using Mobile End Devices.- Internet Adoption in Tourism Industry in China.- The Use of Data Sources of Medication Information a Finnish Primary Care Organization in the Light of National e-Health Scenarios.- Student Retention through Customized Service Processes.- e-Government in the Finnish Early Childhood Education: An Analysis of Current Status and Challenges.- Network-driven Context in User-driven Innovation.- Does E-government Trust in e-Commerce when Investigating Trust? A Review of Trust Literature in E-Commerce and e-government Domains.- Effects of Information Communication Technology on Urban and Rural Service Sectors: An EmpiricalAnalysis of Japanese Economic Geography.- The Age-Divide in E-Government Data, Interpretations, Theory Fragments.- Software Piracy in Chilean e-Society.- A Computing System to Assist Business Leaders in Making Ethical Decisions.- Industrial and Administration Track.- Local Government ICT Platform Standardization Activities of ICT Systems and Services for Offering High Value-added Service by Interacting Local Governments, Regional Institutions and Private Sector.- Service Interaction Platform Technologies Providing High Value-added ICT Services.- Realizing Interoperable Infrastructure for Electronic Business Systems and Local Government Systems.- Group Support in Collaborative Networks Organizations for Ambient Assisted Living.