The current number of mobile subscribers reached 50 million people can be seen as a nearly saturated state. To attract new customers means that coming to take away from the competition’s customers, so there are the fierce competition to attract to customers. So if there are signs of churn, it should be quickly analysed to avoid moving to competition. This paper estimated the churn of mobile users by using Competing risks model and Bayes’ theorem, and proposed how to prevent it. Proposed method was verified through the experiment, and it has been shown that the results of using the model is effectively predict the probability of churn of mobile users.

Abstract
 1. 서론
 2. 선행연구 및 문제정의 
 3. 각 이탈요인 별 이탈확률의 사후분포 추정
 4. 수치예제
 5. 결론 및 향후 연구방향 
 참고문헌

• 안병권(한양대학교)
• 윤덕균(한양대학교)