Robust and Sparse Estimation of Linear Regression Coefficients with Heavy-tailed Noises and Covariates

Robust and sparse estimation of linear regression coefficients is investigated. The situation addressed by the present paper is that covariates and noises are sampled from heavy-tailed distributions, and the covariates and noises are contaminated by malicious outliers. Our estimator can be computed efficiently. Further, the error bound of the estimator is nearly optimal.Comment: Some mistakes are corrected, and one assumption is added to the main theore