PCA dimensionality reduction example uses data sets and data sets to measure 9 indicators of quality of life in 329 cities: climate, housing, health, crime rate, transportation, education, art, entertainment and economy. For each index, the higher the better, as the high crime indicator indicates a low rate of crime.

Filename	Size	Update
PCA_exp_cities.m	962	2018-02-01
PCA实例.docx	398689	2018-01-23

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