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1)  weighted averaging gradient directional field
加权平均梯度方向场
1.
Fingerprint singular points detection based on both weighted averaging gradient directional field and improved Poincare Index;
基于加权平均梯度方向场和改进Poincare Index的指纹奇异点检测算法
2)  weighted directed gradient
加权方向梯度
3)  weighted gradient direction
权重梯度方向
1.
this paper proposes a new method for formulating and evaluating illegal points and three new kinds of evaluation functions,and develops a special hybrid genetic algorithm(HGA) with penalty function and weighted gradient direction search for non linear programming problems.
基于梯度方向搜索和新的评价方法 ,提出了一种新的沿权重梯度方向变异的混合式遗传算法( HGA) 。
4)  Weighted mean square
加权平均方差
5)  Weighted mean roughness
加权平均粗糙度
1.
This paper introduces the connotations of the decision tree algorithm and the method for constructing of the decision tree algorithm,improves the decision tree algorithm constructed by using the weighted mean roughness,and illustrates the advantages of the improvement algorithm with the example.
介绍了决策树算法的含义和构筑方法,对基于加权平均粗糙度构造决策树算法进行改进,通过实例说明了改进算法的优势。
2.
We presented weighted mean roughness, a new concept based on rough sets theory which is regarded as the criteria for choosing attributes.
基于粗糙集的理论提出了加权平均粗糙度的概念 ,将其作为选择分离属性的标准。
3.
In the process of constructing a decision tree, weighted mean roughness, a new concept based on rough set theory which is regarded as the criteria for choosing attributes is applied.
在构造决策树的过程中,基于粗集的理论运用了加权平均粗糙度的概念,并将其作为选择分离属性的标准。
6)  Weighted average applicability
加权平均贴近度
补充资料:平均梯度
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性质:感光材料特性曲线上任意两点连成直线的斜率。它与反差指数相似,以表示。通常求取平均梯度时一点位于直线部,另一点位于趾部(如灰雾密度加0.1)或肩部,或者两点都在不在直线部,因此平均梯度反映的胶片反差总是小于伽玛(r),但更接近实用效果。规定平均梯度指标时必需说明两个计算点的具体部位。

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