A combination of SIMUL-ANN-2 with POWELL.
simul-pow-2 [nloop] [tchn] [nanne] [nsamp] [iseed] [tiny]
This method packages together
SIMUL-ANN-2 and the POWELL routine; at the end of each of the cooling
sequences, or annealing cycles, the POWELL method is
invoked. The rate of cooling in each anneal loop may
be much faster than in simulated annealing alone.
Probably one of the best choices where one `best'
answer is to be found, but at the expense of a lot
of computer time.
Note that the parameters of SIMUL-POW-2 are those of
SIMUL-POW-2 itself (which have the same meaning as in routine SIMUL-ANN-2), plus those of POWELL.
| nloop |
integer |
256 |
16 |
4096 |
| tchn |
real |
0.95 |
0.1 |
0.9999 |
| nanne |
integer |
16 |
1 |
256 |
| nsamp |
integer |
128 |
16 |
1024 |
| iseed |
integer |
14391 |
-1.e+20 |
1.e+20 |
| tiny |
real |
1.e-12 |
1.e-20 |
1.e-6 |
Parameter=nloop (integer default=256 min=16 max=4096)
Maximum number of temperatures.
Parameter=tchn (real default=0.95 min=0.1 max=0.9999)
Factor for temperature reduction.
Parameter=nsamp (integer default=128 min=16 max=1024)
Number of movements at each temperature.
Parameter=iseed (integer default=14391 min=-1.e+20 max=1.e+20)
Seed for random number generator.
Parameter=tiny (real default=1.e-12 min=1.e-20 max=1.e-6)
Smallest temperature allowed.
- sherpa
-
get_method_expr,
grid,
grid-powell,
levenberg-marquardt,
method,
monte-lm,
monte-powell,
montecarlo,
powell,
sigma-rejection,
simplex,
simul-ann-1,
simul-ann-2,
simul-pow-1,
usermethod
|
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