spss因子综合得分计算出来与聚类分析会产生矛盾吗？

doris07

1876

收藏 2014-03-19

求助，我现在已经将因子综合得分计算出来了，但是聚类效果不是太好，只能聚成两类。想请教各位，这两类与综合得分计算出来的顺序会有矛盾吗？

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ReneeBK

2014-3-20 05:31:38

Aldenderfer and Blashfield comment, “Factor analysis tends to blur the relationship between clusters. . . .”
Johnson (1988) comments, “The central limit theorem assures that when variables are grouped into factors a lot of ‘smoothing’ will occur. Cluster analysis can take advantage of the ‘lumpiness’ of data, and will be impeded by any smoothing. . . .”
Millgan (1987) states that if clusters exist in the original variable space, then factor analysis can distort or hide the true structure, as shown in a study by Sneath (1980).

http://www.oreon.net/docs/Market%20Figmentation_f_1.pdf

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ReneeBK

2014-3-20 05:33:32

I have analysed several dimensions in a survey. Each part of the survey represents a theoretical dimension and is analysed with factorial analysis. I want to use scores from factor analysis to do cluster analysis.

Should I keep only first factor or do I need to retain all factors?
After factor analysis I did a PROMAX rotation which is an oblique rotation. How should I use the output from the PROMAX rotation? If i have taken account of that how do I compute distance with factors correlations matrix ?

http://stats.stackexchange.com/questions/2467/classification-after-factor-analysis

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