[IEEE 2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC) - Deng Feng, China (2011.08.8-2011.08.10)] 2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC) - Lundberg exponent in a cox risk model with multiple riskShengju Yang, ; Wenling Li, · 2011