snowland-algorithm 0.0.5

Python implementation algorithm

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slapy
=========
1. install
pip install -r requirements.txt

#. dirs
1. graph

#. swarm
a. pso(v0.0.1+)
b. ga(v0.0.1+)
#. gso(v0.0.2+)
#. fa(v0.0.3+)
#. quick use
1. pso
def fun(vars):
# fitness function
x, y = vars
if 1 <= x <= 2 * np.pi and 1 <= y <= np.pi:
return np.cos(x) + np.sin(x) - x * y
else:
return -2 - 4 * np.pi ** 2 # return a small float number can not reach

if __name__ == '__main__':
engine = PSOEngine(vmax=0.01, bound=[[1, 2 * np.pi]], min_fitness_value=-1, dim=2, fitness_function=fun, steps=100)
engine.run()
x, y = engine.gbest.indv
print('max value', fun(engine.gbest.indv))
print('x:', x, 'y:', y)

#. gso
def fun(vars):
# fitness function
x, y = vars
if 0 <= x <= 2 * np.pi and 0 <= y <= 2 * np.pi:
return -np.cos(x) - np.sin(y) + 10
else:
return -10 # return a small float number can not reach


if __name__ == '__main__':
engine = GSOEngine(vmax=0.01, bound=[[0, 2 * np.pi]], rs=1, min_fitness_value=np.inf, dim=2, l0=1, fitness_function=fun,
steps=30)
engine.run()
x, y = engine.gbest.indv
print('max value', fun(engine.gbest.indv))
print('x:', x, 'y:', y)