In this paper, we formulate relay selection into a Chinese restaurant game. A secure relay selection strategy is\r\nproposed for a wireless network, where multiple source nodes send messages to their destination nodes via several\r\nrelay nodes, which have different processing and transmission capabilities as well as security properties. The relay\r\nselection utilizes a learning-based algorithm for the source nodes to reach their best responses in the Chinese\r\nrestaurant game. In particular, the relay selection takes into account the negative externality of relay sharing among\r\nthe source nodes, which learn the capabilities and security properties of relay nodes according to the current\r\nsignals and the signal history. Simulation results show that this strategy improves the user utility and the overall\r\nsecurity performance in wireless networks. In addition, the relay strategy is robust against the signal errors and\r\ndeviations of some user from the desired actions.
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