When modeling electromagnetic parameters, the range of geometric parameters varies greatly and modeling with previous techniques can be very difficult. In order to solve this problem, this paper reviews a systematic and automated algorithm based on second-order derivative information. The algorithm divides a flat region into a few large sub-regions and a nonlinear region into a large number of small sub-regions. When the geometric parameters of the sub-region change from one sub-region to another, the electromagnetic response discontinuity will be found on the boundary of adjacent models, which also leads to the problem of multidimensional discontinuity. This paper reviews a modified method to solve this problem to obtain a continuous global model and in this paper, three methods of parallel data generation, parallel sub-model training and parallel sub-model modification are used to accelerate the model development process and finally get the desired model quickly and accurately.