FD {diagL1}

F Distance

Description

F Distance

Usage

FD(model, norm = 2)

Arguments

model

Object returned from regL1 representing the fit of the L1 model.

norm

Type of norm, there are two types, 1 (norm L1) and 2 (norm L2). The default is norm L2.

Value

F Distance

A vector with F Distance for each observation.

.

References

Sun, R.-B. and Wei, B.-C. (2004). On influence assessment for lad regression. Statistics & Probability Letters, 67, 97-110. doi:10.1016/j.spl.2003.08.018.

Examples

set.seed(123)
x = matrix(rnorm(100), ncol = 2)
y = x[, 1] + x[, 2] + rlaplace(50, 0, 5)

# Fits a linear regression L1 model
mod1 = regL1(y ~ x)
FD(mod1)