For the quasi-Newton type trust region method based on the conic model solving unconstrained optimization, horizon vector of the conic medel is proposed, the unique optimal parameter is determined and the numerical results are given in this paper.

• 摘要对于求解无约束优化问题的锥模型拟牛顿型信赖域方法，本文主要讨论了水平向量的选取及最优参数的确定，并给出了数值试验结果。