Robust regression in R
Robust statistics philosopy
Robust regression
R ressources
Examples
Bibliography
References
Robust regression in R
Eva Cantoni
Research Center for Statistics and Geneva School of Economics and Management,
University of Geneva, Switzerland
April 4th, 2017
Robust statistics philosopy
Robust regression
R ressources
Examples
Bibliography
References
1 Robust statistics philosopy 2 Robust regression 3 R ressources 4 Examples 5 Bibliography
Robust statistics philosopy
Robust regression
R ressources
Examples
Against what is robust statistics robust?
Bibliography
References
Robust Statistics aims at producing consistent and possibly efficient estimators and test statistics with stable level when the model is slightly misspecified.
Model misspecification encompasses a relatively large set of possibilities, and robust statistics cannot deal with all types of model misspecifications.
By "slight model misspecification", we suppose that the data generating process lies in a neighborhood of the true (postulated) model, the one that is considered as "useful" for the problem under investigation.
Robust statistics philosopy
Robust regression
R ressources
Examples
Against what is robust statistics robust?
Bibliography
References
This neighborhood is formalized as
F = (1 - )F + G ,
(1)
? F is the postulated model, ? is a set of parameters of interest, ? G is an arbitrary distribution and ? 0 1 captures "the amount of model misspecification"
Robust statistics philosopy
Robust regression
R ressources
Examples
Against what is robust statistics robust?
Bibliography
References
Inference G arbitrary G = z G = F(, ) G such that F = F(, )
arbitrary G = z G = F(, ) G such that F = F(, )
Classical
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