Affiliation: | 1.Department of Electrical Engineering, Stanford University, Packard Building 239, 350 Serra Mall, Stanford, CA, 94305, USA ;2.Department of Electrical Engineering, Stanford University, Packard Building 272, 350 Serra Mall, Stanford, CA, 94305, USA ;3.Department of Statistics, Stanford University, 390 Serra Mall, Stanford, CA, 94305, USA ; |