gradient vector的例句大全

The gradient vector can be used to construct the initial errors.

这时可以对梯度向量本身进行分析，或者用这个梯度向量构造初始误差场。

the main difficulty is that the gradient vector for the cost function with respect to the design variables is hard to evaluate in the optimization method based on gradient algorithm, the costs of computation increase by geometric progression by the dimension of the design variables.

基于梯度优化方法的主要困难在于目标函数对设计变量的梯度矢量难以计算，计算量随设计变量的维数增大呈几何级数增大。

skeleton snake model based on gradient vector flow

基于GVF的骨架snake模型

we presented a novel and fast convergent skeleton snake model based on gradient vector flow ( gvf).

提出了一种基于梯度矢量流（GVF）的快速收敛骨架snake算法。

extraction algorithm of contour lines based on generalized gradient vector flow snakes model

基于梯度矢量流主动轮廓模型的等高线提取算法

we discuss several different definitions of directional derivative and gradient vector.

摘要讨论了几种不同的方向导数和梯度的定义.

The predicted errors of preserved 300 records were calculated by random forest, stochastic gradient boosting, support vector and artificial neuron network. The results show that artificial neuron network predict the most precisely.

并用随机森林、随机梯度Boosting、支持向量机和人工神经网络四种算法对预留的数据进行了预测，结果表明人工神经网络的预测误差最小。

computer-aided transformation of gravity vector and its gradient tensor between coordinate systems

引力向量及梯度张量在坐标系之间的变换

Sharma [ 1] the vector-expression of ray tracing in gradient-index media have been derived and an error function is denned in this paper.

Sharma等人提出的方法，给出了变折射率介质中光线追迹的矢量表达式；并提供了一个判断计算结果可靠与否的误差函数。

We know that the gradient is perpendicular to this vector that's tangent to the level surface What about other vectors tangent to the level surface?

我们知道梯度向量垂直于这个向量，而速度向量是相切于等值面的，其他相切于等值面的向量，又如何呢？

GVF model derives from generalized force balance equations, a vector diffusion equation is employed to diffuse the gradient of an edge map in regions distant from the boundary, yielding a general type of force field which can be decomposed into an irrotational component and a solenoidal component.

梯度矢量流（GVF）模型是从广义力平衡方程出发，利用能量最小公式，应用扩散方程扩散了边界区域的边缘映射梯度，产生了一种广义矢量场，包含无旋分量和无散分量。

Dissert Concisely about the Sort of the Gradient Characteristic Vector

简论梯度特征向量排序法

And so that means that any vector u, any unit vector tangent to the level set of g is going to be perpendicular to the gradient of f.

也就是说，任何向量u，任何与g的水平集相切的单位向量，应该要与f的梯度垂直。

All of them have the characteristics of good unbias ( s) edness, powerful unimodality and high sensitivity, etc., and can be applied to evaluation of defocusing and motion blurring. The vector norm sum of gray gradient is the best among them.

它们都有无偏性好、单峰性强、灵敏度高等特点，可用于离焦模糊和运动模糊情况的评价，且灰度梯度向量模方和最理想。

An Online Learning Algorithm of Support Vector Regression Based on Natural Gradient

基于自然梯度的支持向量回归在线算法