Cluster validity index is used to scale the validity of clustering, and determine the number of clusters.
聚类有效性指标既可用来评价聚类结果的有效性，也可以用来确定最佳聚类数。
We choose at each step the merging of clusters that results in the greatest increase (or smallest decrease) of clustering validity index.
算法每步合并两个簇，使有效性函数值增加最大或减小最少。
Sometimes, the definition of similarity in the clustering algorithm is not consistent with that in the cluster validity index, so that the value of index is useless in this case.
聚类算法与聚类评价指标所采取的相似性定义往往并不一致，这就导致了在某种意义下聚类评价指标的无用性。
It was proposed that comprehensive index of regional environmental risk consists of the danger index of risk source, validity index of control mechanism and vulnerability index of risk receptor.
文章依据风险系统理论，构建区域环境风险区划的层次结构模型与指标体系，提出区域环境风险综合指数由风险源危险性指数、控制机制有效性指数、受体易损性指数组成。
Subjective evaluation method has the same validity as the performance index in assessing the quality of VDT display.
评价VDT显示质量，主观评价法具有与作业绩效指标同样的价值。
But on the condition that the strength of signals is almost equal, the validity of the appraisal index is rather low.
但在信号强度几乎相同的条件下，这一评价指标的有效性较低。
Evaluation index system has good reliability and validity.
评价指标体系具有较好的信度和效度。
Results: Each index is accorded with the quality level re - quest in Chinese Pharmacopoeia 2005 in the 2 years validity time.
结果：二年实际有效期内各项指标符合中国药典2005版质量标准要求。
MAIN OUTCOME MEASURES: Homogeneity reliability, re measuring reliability and validity, absolute fit index, relative fit index and parsimony index of childhood trauma questionnaire were involved.
主要观察指标：儿童期虐待问卷的同质信度，重测信度，效度，绝对拟合指数，相对拟合指数，省俭指数。
Conclusion Using the method of construction validity to execute the validity evaluation of the Clinical Doctor's Efficiency Index evaluation System can get expect effect.
结论应用结构效度分析法对临床医师绩效量化指标系统的效度评价可收到预期效果。
According to unary function limit and multivariate function limit of mathematical Analysis, the validity of the index Vnew is proved in theory.
并根据数学分析中一元函数和多元函数的极限的相关知识，在理论上证明了该指标的有效性。
One model is fuzzy cluster analysis of gene expression data based on a cluster validity measure named Xie-Beni index.
一种模型是基于有效性测度谢白尼指数的基因表达数据的模糊聚类分析。
The research also showed that the index system of key disciplines evaluation in Hebei province had acceptable reliability, but relatively low validity.
研究表明，河北省重点学科评估指标体系具有可接受的信度，但效度有待提高。
Though evaluating the reliability and validity of the Interpersonal Reactivity Index-C, it provides the reliable tool for evaluating empathy.
同时对中文版人际反应指针量表作信度和效度检验，为共情评估提供可靠的工具。
The proposed index system and method are applied to a practical urban network construction project of a supply company, and numerical results verify the correctness and validity of them.
最后，运用本文所建立的指标体系和所提出的方法，对某地方供电公司某一期实际城网建设与改造项目的经济效益进行了实例分析。
Predictive validity was assessed by correlative analysis between their scores and the Barther Index (BI) at the end of the third month after onset.
将各神经功能缺损量表评分值与三个月后日常生活指数（BI）进行相关分析，评定效度；
Content validity testing of the index by comparing the ONQI scores from random food lists to scores generated by an expert panel.
通过比较随机食物清单上的ONQI分数与由专家小组制定的分数而对指数进行了内容效度检验。
And through testing by test-retest reliability, rater reliability and validity test, this study carried out the re-evaluation on the evaluation index system.
并通过重测信度测验、评分者信度测验和效度测验等方式对评价指标体系实施了再评价。
To test the reliability and validity of Work ability Index (WAI) in Chinese version.
目的了解效验工作能力指数(WAI)中文版的可信度和有效度。
The problem due to grid size among dat a number in index table, time consuming and data validity was solved.
解决了因网格疏密程度引发的数据存储量、索引时间与网格所包含的有效信息量之间的矛盾；
And the validity of the chosen methods is tested in a working condition that is constructed in computer. And all the concerned index parameter is fixed.
构造一种实际工作情况，验证所选方法的有效性，并得出相关的规格参数。
Results To kill bacteria by using 3M paper plastics package, the biochemical index reach the standard, the sterilization period of validity is above half year.
结果应用3M纸塑包装袋包装灭菌，生物、化学监测均达标，其无菌有效期可达半年以上。
Conclusions Compared with Oxygenation Index, "Diffusion Index" is a comprehensive indicator for ARDS prognosis with better reliability and validity.
结论“弥散指数”是比氧合指数更为有效且可信度高的ARDS预后评估指标。
Conclusions Compared with Oxygenation Index, "Diffusion Index" is a comprehensive indicator for ARDS prognosis with better reliability and validity.
结论“弥散指数”是比氧合指数更为有效且可信度高的ARDS预后评估指标。
应用推荐