- Weighted Least Absolute Deviation Lasso Estimator
- Weighted Least Absolute Deviation Lasso Estimator
- ㆍ 저자명
- Jung. Kang-Mo
- ㆍ 간행물명
- 한국통계학회 논문집
- ㆍ 권/호정보
- 2011년|18권 6호|pp.733-739 (7 pages)
- ㆍ 발행정보
- 한국통계학회
- ㆍ 파일정보
- 정기간행물|ENG| PDF텍스트
- ㆍ 주제분야
- 기타
The linear absolute shrinkage and selection operator(Lasso) method improves the low prediction accuracy and poor interpretation of the ordinary least squares(OLS) estimate through the use of $L_1$ regularization on the regression coefficients. However, the Lasso is not robust to outliers, because the Lasso method minimizes the sum of squared residual errors. Even though the least absolute deviation(LAD) estimator is an alternative to the OLS estimate, it is sensitive to leverage points. We propose a robust Lasso estimator that is not sensitive to outliers, heavy-tailed errors or leverage points.