Explicit macro-factor models
In explicit macro-factor models, observable market risk factorsare included in a model through a discretionary choice. The mis-specification risks are non-negligible.
To avoid correlation between the returns of the different asset class factors, Agarwal and Naik (2000a) select variables through a stepwise regression. As mentioned by the authors, "The stepwise method involves entering the independent variables into the discriminant function one at a time, based on thei
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