An \(O(n^2)\) active set algorithm for the solution of a parametric quadratic program (Q1971113)

The author presents an \(O(n^2)\) active set algorithm for minimizing parametric quadratic functions of the form \[ \textstyle{{1\over 2}} x'Dx- a'x+ \lambda\max(c- \gamma'x, 0) \] or \[ \textstyle{{1\over 2}} x'Dx- a'x+\lambda|c- \gamma'x| \] subject to \(1\leq x\leq b\) for all nonnegative values of the parameter \(\lambda\). Numerical tests are not given.