Through sorting the distance between clusters to avoid recomputing the distance between clusters we proposed the improved algorithm,which decreases the complexity.
介绍了层次聚类算法的基本思想,在原算法的基础上,通过对类间距离进行预排序从而避免合并类时重新计算类间距离,该算法降低了计算的复杂度。
The primal feature data which has the poor space separability is mapped to the appropriate fractional space,according to within-class and among-class distance criterion and the genetic algorithm to determine the fault feature data,which has the largest within-class and among-class distance in fractional space.
该方法把在原始数据空间中可分性差的特征数据映射到合适的分数阶空间,用类内类间距离作为判据,通过遗传算法确定分数阶p值,找出在分数阶Fourier域内类内类间距离最大的故障特征,然后用PCA降维和神经网络分类诊断。
According to the criterions of the minimum intra-cluster distance and the maximums inter-clusters distance,eighteen Zernike moments are chosen after analyzing the feature values.
对从工业现场提取的15类字符分别计算从2阶到14阶的Zernike矩模值,根据类内距离极小化和类间距离极大化的判别标准对Zernike矩特征值进行分析,最终选择出18个Zernike矩进行进一步归一化后作为字符特征输入到神经网络字符识别系统。
Feature Selection Method Based on ICA and Distance Ratio of within/between Class
一种基于类内类间距离的ICA特征选择方法
Text Clustering Evaluation Method Based on Parameter Estimation of Distances Between Clusters
基于类间距离参数估计的文本聚类评价方法
Linearity (time or distance)
线性(时间或距离)
an instrument for measuring the angular distance between celestial objects; resembles an octant.
测量两个天体之间的角距离；类似于八分仪。
Spatial Clustering Method Based on Raster Distance Transform for Extended Objects
基于栅格距离变换的扩展对象空间聚类方法
Construal Level Theory:From Temporal Distance to Psychological Distance
解释水平理论:从时间距离到心理距离
The extent of space between two objects or places;an intervening space.
距离，间距两物体或两地方之间的空间距离；一段空间
Common fixed point for contractive mappings on quasi-metrical spaces;
拟距离空间上的一类压缩映象的公共不动点定理
Common Fixed Point for A Class of Twice Power Type Φ-Contraction Mapping in 2-Metric Spaces
2-距离空间中两类Φ-压缩映象的公共不动点定理
the point located farthest from the middle of something.
距离事物中间最远的点。
a very small distance or space.
非常小的距离或空间。
small opening between things.
事物之间的狭小的距离。
The machines shall be at least ... m apart.
机器间隔距离至少..米
a short distance between the two houses
两所房子间的短距离
distance travelled per unit time.
单位时间内形成的距离。
Friends agree best at distance.
朋友之间也会保持距离。
people feel that time and distance
人们感觉时间和距离
back focal distance
【光】后焦距﹝指镜头与菲林间的距离﹞
