marginal probability
1.Markov chain monte carlo simulation (MCMC) was taken to sample the posterior distribution to get the marginal posterior probability function of the parameters, and the statistical quantities such as the mathematic expectation were calculated.
2.Next,the probability of cooperation is researched,and the difficulty and punishment quantity of oligarchic business with asymmetrical marginal cost are discussed,the probability of coorperation changes when punishment quantity changes.
3.As the buffer overflow probability is determined by a critical time scale (CTS) which varies with the buffer size and the link rate, the proposed model can match the marginal distributions of all the time-scales, thus it can be used to analysis different buffers.

