Knowledge-based Intelligent System.

Cover -- Editorial advisory board -- Cloud network system determining the optimal transmission power and modulation level -- Business information system recovery priority decision using TOPSIS on interval data -- Tree-based routing algorithms on wireless sensor networks: survey -- Implementation of electronic acupuncture using fuzzy rules -- Advanced face recognition and verification in mobile platforms -- Fuzzy integral-based emotion inference on personalized V-A emotional space.

This special issue contains a collection of the best papers from the International Conference on Digital Policy and Management 2013, which was held in Jeju Island, Korea from October 24th to 26th, 2013. The main goal of the International Conference on Digital Policy and Management is to bring together researchers from academia along with professionals from different industries to share algorithms, solutions, architectures, as well as their experiences. As such, we believe that this conference is one of the most comprehensive in solving problems in knowledge based intelligent systems as well as providing information technology.Recently, with IT convergence equipment spread, more and more intelligent systems are being used in many fields and Knowledge-based projects are underway in various convergence fields such as u-city, u-port, u-work, u-design, u-health, u-traffic, etc. based on it. Intelligent systems express convergence environment that is able to provide knowledge-based services using appliances, simulations, and sensors based networks. Also, it reveals an environment that can provide safe and personalized services any time any place and can be controlled using a monitoring server. These services include controls of home appliances, mobile devices, platforms, etc. Also, controls of internal environments, which include temperature, humidity, luminance, and ventilation, using sensors are included in these services. Knowledge based intelligent systems have advanced to a support function in airports, offices, schools, apartments, and other areas for various personal and social situations. For providing intelligent services, a middleware technology, ontology, social network, knowledge base, data mining, cloud computing, big data, context recognition, pattern analysis, and intelligent systems are required. In addition, studies on the integrated

and converged method that provide proper situation-specific information are to be conducted.This fine collection of papers was accumulated by fruitful collaboration. We gratefully acknowledge and express our heartfelt appreciation to all the authors for their excellent contributions to this special issue. We would also like to thank all the members of the SDPM, ICDPM Program Committee and anonymous reviewers for their help in identifying novel papers and for their careful reading of earlier drafts to select 10 high-quality papers out of 28 papers submitted—a 35% acceptance rate. Furthermore, we would like to thank Professor Craig Standing, editor-in-chief of the International Journal of Systems and Information Technology, for his valuable remarks and help throughout the publication process of this special issue.

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