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First, fuzzy C-means (FCM) clustering method based on a new cluster validity index is used to obtain the optimal discrete values of the continuous attributes. 采用基于一种新的聚类有效性准则函数的模糊C均值聚类算法对连续属性进行离散化；
A New Cluster Validity Index for Fuzzy Clustering 模糊聚类中判别聚类有效性的新指标
Cluster validity indices 有效性函数
Is not a valid index in the list. 不是列表中的有效索引。
clustering validity index 聚类有效性指标
Index is outside the range of valid indexes for the current Array. index超出当前Array的有效索引的范围。
StartIndex is outside the range of valid indexes for source. startIndex超出了source的有效索引范围。
Results: The content validity index (CVI) of the 32 -item stress rating scale was 0.92. 结果：本压力量表共32题内容效度指标0.;92；
Cluster validity function used for FCM segmentation 面向FCM聚类阈值分割的聚类有效性判别函数
The free radical concentration (Ng) of kerogen is a valid index to study thermal maturation of organic matter and paleotemperature of sedimentary basin. 干酪根自由基浓度是研究有机质热演化的有效指标之一．也是研究沉积盆地古地温的热参数之一。
Considering the characteristics of microarray, we design and realize a FCM model based on clustering validity functions. 结合基因微阵列的特点,设计并实现了一种基于聚类有效性函数的模糊C均值模型。
This paper discusses the fuzzy C-means algorithm(FCM) , one of the fuzzy clustering methods and clustering validity measurements. 本文讨论了模糊聚类中的模糊C均值算法和聚类有效性测度。
To consider the geometry structure information of data set, new clustering validity functions are defined by modify possibilistic partition coefficient. 该文考虑到数据集的几何结构信息,对可能性划分系数进行改进,提出了新的聚类有效性标准。
Cluster Validity Based on Possibilistic Distribution 基于可能性分布的聚类有效性
The VALIDATE INDEX statement also verifies that the statistics reported on the specified index(es) are accurate. VALIDATE INDEX语句还校验为指定索引报告的统计信息是否准确。
Based on the classical fuzzy cmeans(FCM), a function for measuring clustering validity and a heuristic method to calibrate the fuzzy exponet iteratively are defined, and a practical fuzzy neural network model is proposed. 在传统的模糊C-均值算法的基础上，给出了一个衡量聚类有效性的函数和确定模糊指数的启发式方法，并给出了应用该算法的具体的模糊神经网络模型。
However,HAC methods have several drawbacks,such as high time and memory complexities when clustering,insufficient and inaccurate cluster validation,etc. 但层次聚类也存在着几个缺点,如聚类时的时空复杂性高;聚类的簇效率低、误差较大等。
A cluster of stars smaller than a constellation. 星群，星座比星座小的一簇星星
The cluster network is not valid. 该群集网络无效。
The cluster network provider is not valid. 群集网络提供程序无效。