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源文献引用系列(2): MDS分析要求应力系数 stress<0.2 的文献依据

已有 5007 次阅读 2017-5-31 13:02 |个人分类:数据处理与统计分析|系统分类:论文交流| amp, 的文献依据

原始文献引用为

Kruskal J B (1964).  Multidimensional Scaling by optimizing goodness-of-fit to a non-metric hypothesis.  Psychometrika 29, 1-27.


完整pdf下载   Kraukal_1964.pdf


将应力系数(stress)值作为MDS空间构形图拟合度的指标,如果值<0.2,才表示适合做MDS分析!


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相关论述

MDS solutions are not unique, and they are subject to convergence to local minima.  The first point means that two or more maps can be equally good (same stress) but place points in radically different locations. The second point means that it is possible for the algorithm to fail to find the configuration with least stress.  If you suspect this has happened, run the program several times using random starting configurations. Stress values below 0.1 are excellent and above 0.2 unacceptable.

http://www.analytictech.com/ucinet/help/165loz0.htm  


如有纰漏或错误之处,欢迎批评指正!



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