1. Key Laboratory of Hunan Province for Mobile Business Intelligence, Key Laboratory of Hunan Province for New Retail Virtual Reality Technology, and Mobile E‐business Collaborative Innovation Center of Hunan Province, School of Computer and Information EngineeringHunan University of Commerce Changsha 410205 China
2. School of SoftwareEast China University of Technology Nanchang 330013 China
3. Collaborative Innovation Center for Economics Crime Investigation and Prevention Technology Jiangxi Province Nanchang 330103 China
4. National Engineering Research Center for Multimedia Software, School of Computer ScienceWuhan University Wuhan 430072 China