Example description

nag_opt_handle_solve_dfls (e04ffc) Example Program Results

  ----------------------------------------------
  E04FF, Derivative free solver for data fitting
         (nonlinear least-squares problems)
  ----------------------------------------------
 
  Problem statistics
    Number of variables                  4
    Number of unconstrained variables    2
    Number of fixed variables            0
    Number of residuals                 11
 
  ----------------------------------------
   step |    obj       rho     |    nf   |
  ----------------------------------------
      1 |  1.89E-03  1.00E-01  |     7   |
      2 |  5.77E-04  1.00E-01  |     8   |
      3 |  4.23E-04  1.00E-01  |     9   |
      4 |  4.05E-04  1.00E-02  |    10   |
      5 |  4.02E-04  1.00E-02  |    11   |
      6 |  4.02E-04  1.00E-03  |    16   |
      7 |  4.02E-04  1.00E-03  |    18   |
      8 |  4.02E-04  7.07E-05  |    21   |
      9 |  4.02E-04  7.07E-05  |    22   |
     10 |  4.02E-04  5.00E-06  |    30   |
  ----------------------------------------
  Status: Converged, small trust region size.
 
  Value of the objective                    4.02423E-04
  Number of objective function evaluations           30
  Number of steps                                    10
 
  Computed Solution:
    idx   Lower bound        Value      Upper bound
      1       -inf       1.81300E-01         inf
      2   2.00000E-01    5.90128E-01    1.00000E+00
      3       -inf       2.56927E-01         inf
      4   3.00000E-01    3.00000E-01         inf