The NEOS Server offers BARON for the solution
of mixed integer nonlinearly constrained optimization problems and global
optimization problems. Problems for BARON can be submitted on NEOS in AMPL
or GAMS format.
BARON is a computational system for solving nonconvex optimization problems
to global optimality. Purely continuous, purely integer, and mixed-integer
nonlinear problems can be solved with the software. The Branch And
Reduce Optimization Navigator derives its name from combining
constraint propagation, interval analysis, and duality in its reduce arsenal
with enhanced branch and bound concepts as it winds its way through the
hills and valleys of complex optimization problems in search of global
BARON was developed and is currently maintained by Nick Sahinidis.
Availability of BARON on the NEOS Server is possible thanks to the
generosity of The GAMS Development Corporation and the providers of software
for the solution of the LP and NLP subproblems solved by BARON.
The user must submit a model in GAMS
format to solve an optimization problem. For security purposes, the model
submitted must adhere to the following conventions:
If you are unfamiliar with GAMS, the
GAMS Documentation includes a
GAMS Tutorial and
Examples of models in GAMS format can be found in the
GAMS model library.
By default, the NEOS Server limits the amount of output generated in the listing
file by turning off the symbol and unique element list, symbol cross references,
and restricting the rows and columns listed to zero. This behavior can be changed
by specifying the appropriate options in the model file. See the
documentation on GAMS output
for further information.
You may optionally submit an options file if you wish to override the default parameter settings for the solver.
Currently, the NEOS Server can only use optfile=1 with GAMS input. Therefore, any model that specifies a different options file will not work as intended.
Please see the
for more information.
<modelname>.optfile = 1 ;
optfile = 1