Programming analytical ray-tracing by making use of square slowness gradient distribution formalism, its expression constitution is simple and accurate, so it is also easy to complete program.
利用平方慢度梯度为常数的分布函数进行解析射线追踪其表达式结构简单而又精确，在程序实现上是很方便的。
A novel neural network is proposed, which solve the programming problems with linear restraints based on gradient projecting matrix.
提出了一种基于梯度投影矩阵下的求解线性约束下规划问题的神经网络。
A new nonlinear optimization method called variable metric gradient projection method is presented. It is a combination of mathematical programming with optimality criterion.
本文将数学规划法与优化准则法有机地结合起来，导出了一种新的优化方法——变尺度梯度投影法。
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