查询词典 falling gradient

The gradient of f; its dot product with is the directional derivative of f in the direction of w .

f的梯度；它与的内积为f在 w 方向上的方向导数。

Derivatives in higher dimensions, directional derivative and gradient.

在多维度中的微分、方向导数和梯度。

It is not so for nonlinear operators, such as the directional derivative along the gradient.

它不是所以为例如沿着坡度方向的派生物非线性的操作员。

The gradient of f; its dot product with uw is the directional derivative of f in the direction of w

f f 的梯度；它与 uw 的内积为 f 在 w 方向上的方向导数

In this paper, a new edge detection method——method using extremum of first directional derivative is proposed, based upon a general gradient edge model.

文中通过傅里叶变换，在频率域，通过求垂直于边缘的一阶方向导数，并检测其极值点来确定边缘。

In the new method proposed, gradient direction is not directional derivative but optimized result of chaos search in local area.

该方法先在局域内用混沌优化搜索局域最优点，再将此最优点作为梯度方向，通过改变局域范围跳出局部寻优区域。

The intensity gradient of image is in the direction that the shape of surface changes most, so we use directional derivative of the reflectance map as parts of objective function.

混合反射模型比漫反射或镜面反射更加接近实际。图像的梯度方向对应物体形状变化最快的方向。因此构造了含有图像梯度信息的目标方程。

We get theexistence theorem of directional derivative of convex fuzzy mapping, and discuss the relationsamong directional derivative, differential, gradient and subdifferential.

得到了这类模糊映射的凸映射的方向导数的存在性定理。

On the fuzzy number valued mapping F:〓→〓, we put forward the definitions ofdirectional derivative, differential, gradient and subdifferential, and with the "cut method" byusing respectively the directional derivative and differential of two crisp functions that aredetermined by F, characterize the directional derivative and differential of F.

对于模糊映射F：〓→〓，提出了方向导数，微分，梯度及次微分的概念，并通过取截集，用由F所完全确定的通常函数的方向导数和微分分别刻划F的方向导数和微分。

The maximum principles for functions which are defined on solutions of semilinear elliptic equations u+f=0(q=|u|~2)subject to Dirichlet boundary conditions u=0 were studied by using Hopf s maximum principle,the estimate of gradient q was obtained.

运用Hopf 极值原理讨论了一类具有Dirichlet边界条件u=0的半线性椭圆方程Δu+f=0(q=|u|2)的解的某个函数的极值原理，利用该结论获得了解的梯度q的估计。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。