SCIENCE CHINA Information Sciences(Sci China Inf Sci),cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China,and published by Science China Press,is committed to publishing high-quality,original results of both basic and applied research in all areas of information sciences,including computer science and technology;systems science,control science and engineering;information and communication engineering;electronic science and technology.Sci China Inf Sci is published monthly in both print and electronic forms.