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 ...

For certain piecewise linear plane curves Γ and convex functions Φ we address the question of whether the maximal operator along Γ is of weak type Φ(L). For example, when Γ is the graph of the ...