Hi all

after finding the global mode with the mode_compute = 7 (many number of interation and number of fuction evaluation as well) then the likelihood of -2197.2944 can not be improved anymore, Dynare also report that the Hessian matrix is negative. So that MH algorithm can not be computed.

I try with another mode_compute, for example, 4 and 9, but the Hessian is still negative in Dynare and the likelihood of -2197.2944 can not be improved anymore either

Anyone has a good suggestion for me?

Thank a lot