Author Description

This issue of Grey Systems: Theory and Application (GS) (Vol.4, No.2) includes twenty papers that were mostly presented at the 2013 International Conference on Grey Systems and Intelligent Services (2013 IEEE GSIS). The conference provided an international forum to exchange knowledge, ideas and experiences in research on those main branches of grey system theory, such as grey prediction models, grey relational analysis (GRA), grey cluster and grey evaluation, grey decision-making models, etc. We thank Prof. Sifeng Liu from Nanjing University of Astronautics and Aeronautics, who was the Chairman of 2013 IEEE GSIS and Editor-in-chief of GS, for his support and assistance in selecting some of the high quality manuscripts that appear in this issue. and also some original submissions of GS that related with GRA and grey prediction included in this issue too. for most selected papers contribute to GRA and grey forecast, we name this issue as a subject "Applications of GRA and grey prediction models".