1) energy approximation
能量近似
2) Approximate Energy
近似能量
3) half quantification
近似量化
4) approximation quality
近似质量
1.
The degree of subdivision of the decision attribute value directly influences upon the approximation quality of rules,accuracy of approximation classification,core attributes and information entropy in decision systems based on rough set theory.
对基于粗糙集的决策系统,从理论上分析了决策数据细化的程度对规则近似质量、近似分类精度、核属性和信息熵的影响。
2.
This paper proves that upper approximation quality worsens as the feature set is pruned down,and puts forward an algorithm for feature extraction using upper approximation.
该文针对特征提取中存在的噪声污染问题 ,分析了采用粗集上近似进行特征提取可以处理含有噪声数据的原因 ;证明了上近似质量随着条件属性的压缩而降低 ,提出了一种基于集合上近似的质量来进行特征提取的算法 ,该算法以集合上近似质量为迭代准则 ,通过设置一阈值来求取θ -约简 ,得到所要提取的特
5) approximate vector
近似向量
1.
In the recent literature, a variety of index structures have been proposed to facilitate high-dimensional KNN queries, among which the techniques of approximate vector presentation and one dimensional transformation can efficiently break the curse of dimensionality.
在高维空间KNN查询算法中,近似向量和一维转换表示法能有效克服维数灾难,结合这两种思想,提出一种基于区位码和距离的索引结构(BD)以实现快速KNN查询。
6) scalar approximation
标量近似
1.
Based on scalar approximation,the dispersion property of photonic crystal fibers is investigated by an effective index approach in this paper.
利用已有文献对光子晶体光纤色散特性的计算结果,分析了色散随光子晶体光纤结构参数变化的趋势,并利用有效折射率方法基于标量近似理论对光子晶体光纤色散特性进行了有目的性的数值模拟,发现通过独立调整纤芯大小,可以在光通信波段实现非常接近零色散的色散平坦光子晶体光纤,其色散系数D的绝对值在1。
2.
By using the concepts of scalar approximation and leaky-mode and the couple-mode theory, the influence of the change of ambient refractive index upon the LPG′s characteristics such as resonance wavelength and peak loss in detail is analyzed.
将长周期光纤光栅简化为三层阶跃折射率波导结构 ,采用弱导标量近似和泄漏模式的概念结合耦合模理论较全面地、定量地分析了环境折射率变化对长周期光纤光栅谐振峰位置和深度等特性的影响 ,获得了一些有益的结论 ,与实验符合得很
3.
Based on a scalar approximation, the waveguide mode and dispersion property of photonic crystal fibres (PCFs) are investigated with an effective index approach in this paper.
利用有效折射率方法基于标量近似理论对光子晶体光纤的传播模式和色散特性进行了数值模拟 ,发现通过调节光纤包层的空气填充率或包层空气穴节距及其有效芯径可以在很宽的波长范围实现单模传播 ,可以设计零色散波长小于 1。
补充资料：近似
相近或相像但不相同：这两个地区的方音有些～。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条