But I argued that it would be more helpful to students’ understanding of the derivative to start with a simpler case first, namely to use only piecewise-linear functions at the beginning.

This article is concerned with the computational aspect of l₁ regularization problems with a certain class of piecewise linear loss functions. The problem of computing the l₁ regularization path for a ...

These functions may be called piecewise-linear. Smooth functions that are related to the hyperbola and that have piecewise-linear functions as limiting forms are particularly useful for response ...