<Para ID="Par1">We describe the most recent evolution of our constrained and unconstrained testing environment and its accompanying SIF decoder. Code-named <Emphasis FontCategory="SansSerif">SIFDecode and <Emphasis FontCategory="SansSerif">CUTEst, these updated versions feature dynamic memory allocation, a modern thread-safe Fortran modular design, a new Matlab interface and a...</emphasis></emphasis></para>

When solving nonlinear least-squares problems, it is often useful to regularize the problem using a quadratic term, a practice which is especially common in applications arising in inverse calculations. A solution method derived from a trust-region Gauss-Newton algorithm is analyzed for such...