On nonnegative garrote estimator in a linear regression model
عنوان مقاله: On nonnegative garrote estimator in a linear regression model
شناسه ملی مقاله: ISC08_018
منتشر شده در هشتمین کنفرانس آمار ایران در سال 1385
شناسه ملی مقاله: ISC08_018
منتشر شده در هشتمین کنفرانس آمار ایران در سال 1385
مشخصات نویسندگان مقاله:
Leila Mohammadi - EURANDOM, P.O.Box ۵۱۳, ۵۶۰۰ MB Eindhoven, The Netherlands
Sara van de Geer - Seminar fur Statistik, ETH-Zentrum LEO D۱۱, ۸۰۹۲ Zurich, Switzerland
خلاصه مقاله:
Leila Mohammadi - EURANDOM, P.O.Box ۵۱۳, ۵۶۰۰ MB Eindhoven, The Netherlands
Sara van de Geer - Seminar fur Statistik, ETH-Zentrum LEO D۱۱, ۸۰۹۲ Zurich, Switzerland
Subest selection regression is a frequently used statistical method. It waives some of the predictor variables and the prediction equation is based on the remaining set of variables. The variance is ridge regression. Usually, subset selection is not as accurate as ridge. The problems with ridge regression are for example: 1) it is not scale invariant 2) it does not give a simple equation. We need an intermediate method which selects subsets, is stable and gains its accuracy by selective shrinking. Breiman (1995) proposed a new method, called the nonnegative (nn) garrote. In this lecture, in a linear regression model, we consider the nonnegative garrote estimator of the coefficients as introduced by Breiman f(1995). This estimator shrinks the least square estimator by a parameter λ in the orthogonal case. In an especial case of λ, we prove the nn-garrote estimator is consistent and its MSE converges to zero. We also obtain the rate of convergence.
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/85393/