Cheng, Hao; Fang, Shu-Cherng; Lavery, John E. - In: Mathematical Methods of Operations Research 56 (2002) 2, pp. 197-229
Univariate cubic L <Subscript>1</Subscript> splines provide C <Superscript>1</Superscript>-smooth, shape-preserving interpolation of arbitrary data, including data with abrupt changes in spacing and magnitude. The minimization principle for univariate cubic L <Subscript>1</Subscript> splines results in a nondifferentiable convex optimization problem. In order to...</subscript></superscript></subscript>