covariant [kəu'vɛəriənt]

covariant的基本解释

adj.

[物]协变式的, [数]协变的

与covariant相关的网络例句 [注：此内容来源于网络，仅供参考]

Firstly, affine covariant neighborhoods of visual words are used to verify the spatial consistency. Secondly, a set of affine transformation matrices between the corresponding covariant regions is calculated, and the matrix with the most inliers is chosen as the best matching affine transformation matrix. In this step, only a single pair of corresponding affine covariant regions is used to calculate the 6 degree of freedom affine transformation for acceleration. In the last step, the spatial consistency is verified by the BMATM.

首先通过视觉关键词仿射协变的空间邻近特征集进行初步空间关系一致性匹配；然后计算对应仿射协变区块的多组可能的仿射变换矩阵，并选择满足区块匹配最多的变换矩阵作为对象与图像之间最终仿射变换矩阵，其中，仅利用一对协变区块来计算自由度为6的仿射变换的算法有效地提高了计算速度和鲁棒性；最后通过计算出的仿射变换矩阵来精确验证对象与图像之间的空间位置关系是否一致。

The Bengtsson-Jacobson conjecture that "degenerate phase boundaries are always null" is studied by the mapping language in Chapter 4. By distinguishing a "phase boundary" from its image in the "covariant approach", the nulless of the image is proved. Time-like and null hypersurfaces in the degenerate space-times in the Ashtekar theory are denned, and then the phase boundary obtained by the "covariant approach" is shown to be always null.

我们在第四章用映射的语言分析了Bengtsson和Jacobson关于&相边界为类光&的猜想；通过区分&协变方法&中的&相边界&和它的像，我们证明了像的类光性；在定义了Ashtekar退化时空中的类时和类光超曲面之后，我们证明了&协变方法&得到的相边界必定是类光的。

Based on cloud seeding data on April 5,2002 in Henan province,cloud seeding effects were evaluated by six methods,i.e.double contrast method of regional rainfall tendency control,regression analysis method of regional tendency correlation,multiple regression analysis method of regional tendency covariant,floating control historical regression method,cluster-analysis-based floating control historical regression method using rainfall as a covariant and CA-FCM using rainfall and atmospheric perceivable water as covariants.

根据2002年4月5日河南省人工催化增雨作业数据，分别采用作业区域趋势对比双比分析评估方案、区域趋势相关回归评估方案、区域趋势协变量多元回归评估方案、FCM评估方案、以降水量为协变量的CA-FCM评估方案和以降水量与整层大气可降水量为协变量的CA-FCM评估方案进行效果评估。

与covariant相关的网络解释 [注：此内容来源于网络，仅供参考]

Covariant：共变

(1) 虚拟函数的返回值现在支持共变 (covariant) 类型了,这是类层次体系上的一个重大改进;(2) 支持对静态整数类型常量( static const integer )成员的显式初始化;关键字 __gc 用于指定受管类,它们接受垃圾回收器管理,

Covariant：协变式

2、 过载(overload)冲突问题3、 关于协变式(covariant)、一成不变式(invariant)和反变式(contravariant):a) 数组和扩展类(extends)的泛化是协变式,即如果类型T是类型B的子类,那么T[]是B[]的子类;List是List<?

Covariant：协变的

11.2.10 "类型参数"兼容的泛型类之间的类型兼容性 如果使用同一个泛型类来声明具有不同类型参数的两个变量,那么这两个变量不是"类型兼容" 280 第 11 章泛型的;换言之,它们不是协变的(covariant) .类型参数对相同泛型类,

Covariant：协变量

协变量(covariant)跟自变量(factor)有什么区别?比如在spss里面的logit/probit模型里面,两者都要求有,如果放错了,结果也不同,请教各位怎么区分两者.

covariant functor：协变函子

signal averaging 信号平均值 | covariant functor 协变函子 | concave joint 凹(圆接)缝