gai liang de cai gou jing li ren zhi shu yu Vanguard ETF ...
Jiang, Quan Jun
ben wen zhu yao tan tao mei guo cai gou jing li ren zhi shu PMI yu Vanguard ETF VTI zhi jian de guan xi wo men can kao le Stock and Watson 1998 2002 li yong zhu cheng fen fen xi fa Principal ComponentAnalysis PCA chang shi jian li ke yu ce mei guo dao qiong gu shi zhi shu biao xian de gai liang PMI zhi biao bing shi yong PMI yu tou guo 6 ge ling xian zhi biao jian li le yi ge xin PMI zhi biao zai zi liao chu li hou shi yong le yang ben nei yu ...