According to the principle of GEM model,writing the optimization problem and solving it,it is proved that GEM model has the same expression as those of Gravity model and Detroit model.
According to the principle of GEM model,writing the optimization problem and solving it,it is proved that GEM model has the same expression as those of Gravity model and Detroit model.
根据重力式熵模型的原理写出其规划问题,求解并进行等式转换,证明了重力式熵模型与重力模型及底特律模型具有相同的表达形式,并在实际规划问题中应用三种模型进行预测.