SOME INVERSE OPTIMIZATION PROBLEMS ON NETWORK

In this paper,the authors consider some inverse problems on network,such as the inverse transport problems with gains（IGTP） and the inverse linear fractional minimum cost flow problem（IFFP）.Firstly,the authors give the mathematics model of（IGTP） and an efficient method of solving it under l;norm;Secondly,taking advantage of the optimality conditions,the authors consider the（IFFP） and give a simple method of solving it.Finally,an numerical example test is also developed.