I constructed a likelihood function and then use optim to slove the mle. It gave the error like:
Error in integrate(LBCE.fc.4.1, lower = 0, upper = Inf) :
the integral is probably divergent
However, when I checked the the function of LBCE.fc.4.1, it can generante values with various pamameters.
don't know how to check the error and solve the problem.