mesh adaptive direct search

Snow water equivalent estimation using blackbox optimization

  • Stéphane Alarie
  • Charles Audet
  • Vincent Garnier
  • Sébastien Le Digabel
  • Louis-Alexandre Leclaire
    • Categories Applications - Science and Engineering, Constrained Nonlinear Optimization, Nonsmooth Optimization Tags , , , ,

    Accurate measurements of snow water equivalent (SWE) is an important factor in managing water resources for hydroelectric power generation. SWE over a catchment area may be estimated via kriging on measures obtained by snow monitoring devices positioned at strategic locations. The question studied in this paper is to find the device locations that minimize the … Read more

    Using Simplex Gradients of Nonsmooth Functions in Direct Search Methods

  • Ana Luisa Custódio
  • John E. Dennis, Jr.
  • Luis Nunes Vicente
    • Categories Unconstrained Optimization Tags , , , , ,

    It has been shown recently that the efficiency of direct search methods that use opportunistic polling in positive spanning directions can be improved significantly by reordering the poll directions according to descent indicators built from simplex gradients. The purpose of this paper is twofold. First, we analyze the properties of simplex gradients of nonsmooth functions … Read more