Funding for this research was provided by:
National Natural Science Foundation of China (61502016)
Joint Open Fund of Information Engineering Team in Intelligent Logistics (LDXX2017KF152)
National Natural Science Foundation of China (61771230)
Shandong Provincial Key Research and Development Program (2017CXGC0701)
Article History
Received: 18 August 2018
Accepted: 17 December 2018
First Online: 3 January 2019