Platypus is a framework for evolutionary computing in Python with a focus on multiobjective evolutionary algorithms (MOEAs). It differs from existing optimization libraries, including PyGMO, Inspyred, DEAP, and Scipy, by providing optimization algorithms and analysis tools for multiobjective optimization. It currently supports NSGA-II, NSGA-III, MOEA/D, IBEA, Epsilon-MOEA, SPEA2, GDE3, OMOPSO, SMPSO, and Epsilon-NSGA-II. For more information, see our IPython Notebook or our online documentation.
For example, optimizing a simple biobjective problem with a single real-valued decision variables is accomplished in Platypus with:
from platypus import NSGAII, Problem, Real def schaffer(x): return [x**2, (x-2)**2] problem = Problem(1, 2) problem.types[:] = Real(-10, 10) problem.function = schaffer algorithm = NSGAII(problem) algorithm.run(10000)
To install the latest Platypus release, run the following command:
pip install platypus-opt
To install the latest development version of Platypus, run the following commands:
git clone https://github.com/Project-Platypus/Platypus.git cd Platypus python setup.py install
Platypus is also available via conda-forge.
conda config --add channels conda-forge conda install platypus-opt
For more information see the feedstock located here.
Platypus is released under the GNU General Public License.