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出現問題Error in !class_ind : invalid argument type
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mike092...@hotmail.com
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Oct 16, 2014, 9:45:04 PM
10/16/14
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to taiwa...@googlegroups.com
不好意思,想請教大家
我之前跑pgmm與plm的範例一
data("EmplUK", package = "plm")
z1 <- pgmm(log(emp) ~ lag(log(emp), 1:2) + lag(log(wage), 0:1)+ log(capital) + lag(log(output), 0:1) | lag(log(emp), 2:99),data = EmplUK, effect = "twoways", model = "twosteps")
summary(z1)
明明只是將範例貼上於R軟體中
結果有時可以跑,有時卻會出現
Error in !class_ind : invalid argument type
實在不知道是哪裡有問題,讓我非常困擾
希望有人能幫我解決
非常感謝
He-chien Tsai
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Oct 17, 2014, 9:24:54 AM
10/17/14
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to taiwa...@googlegroups.com
這樣看來像是樣本沒清乾淨, 可能有些資料有混到NaN或其他型別去, 才會有不正確的型別輸入, 再加上算法本身是隨機算法, 有時後會抽到不乾淨的資料有時候不會
mike092...@hotmail.com
於 2014年10月17日星期五UTC+8上午9時45分04秒寫道:
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