**Author details**

Chihiro Watanabe1,2\* and Nasir Naveed1

1 Faculty of Information Technology, University of Jyväskylä, Finland

2 International Institute for Applied Systems Analysis (IIASA), Austria

\*Address all correspondence to: watanabe.c.pqr@gmail.com

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
