def test_discrete_search_callback_on_task_begin():
space = search.SearchSpace(1, 2, [0, 0], [1, 1])
optimizer = swarm.PSO()
func = function.Function(Sphere())
opt_model = Opytimizer(space, optimizer, func)
try:
allowed_values = [[1]]
new_discrete_search_callback = callback.DiscreteSearchCallback(
allowed_values=allowed_values)
new_discrete_search_callback.on_task_begin(opt_model)
except:
allowed_values = [[1], [1]]
new_discrete_search_callback = callback.DiscreteSearchCallback(
allowed_values=allowed_values)
new_discrete_search_callback.on_task_begin(opt_model)
try:
allowed_values = [[10], [10]]
new_discrete_search_callback = callback.DiscreteSearchCallback(
allowed_values=allowed_values)
new_discrete_search_callback.on_task_begin(opt_model)
except:
allowed_values = [[1], [1]]
new_discrete_search_callback = callback.DiscreteSearchCallback(
allowed_values=allowed_values)
new_discrete_search_callback.on_task_begin(opt_model)
def test_discrete_search_callback_on_evaluate_before():
allowed_values = [[1], [1]]
new_discrete_search_callback = callback.DiscreteSearchCallback(
allowed_values=allowed_values)
space = search.SearchSpace(1, 2, [0, 0], [1, 1])
optimizer = swarm.PSO()
func = function.Function(Sphere())
opt_model = Opytimizer(space, optimizer, func)
try:
new_discrete_search_callback.on_evaluate_before(None)
except:
new_discrete_search_callback.on_evaluate_before(opt_model.space)
from opytimizer.optimizers.misc.gs import GS
from opytimizer.spaces.grid import GridSpace
# Number of decision variables
n_variables = 2
# And also the size of the step in the grid
step = 0.1
# Lower and upper bounds (has to be the same size as n_variables)
lower_bound = [-10, -10]
upper_bound = [10, 10]
# Creating the GridSpace class
s = GridSpace(n_variables=n_variables,
step=step,
lower_bound=lower_bound,
upper_bound=upper_bound)
# Creating GS optimizer
p = GS()
# Creating Function's object
f = Function(pointer=Sphere())
# Finally, we can create an Opytimizer class
o = Opytimizer(space=s, optimizer=p, function=f)
# Running the optimization task
history = o.start()
from opytimark.markers.n_dimensional import Sphere from opytimizer import Opytimizer from opytimizer.core import Function from opytimizer.optimizers.misc import GS from opytimizer.spaces import GridSpace # Number of decision variables and step size of the grid n_variables = 2 step = [0.1, 1] # Lower and upper bounds (has to be the same size as `n_variables`) lower_bound = [-10, -10] upper_bound = [10, 10] # Creates the space, optimizer and function space = GridSpace(n_variables, step, lower_bound, upper_bound) optimizer = GS() function = Function(Sphere()) # Bundles every piece into Opytimizer class opt = Opytimizer(space, optimizer, function, save_agents=False) # Runs the optimization task opt.start()
n_variables = 2
# Number of running iterations
n_iterations = 10
# Lower and upper bounds (has to be the same size as n_variables)
lower_bound = [-10, -10]
upper_bound = [10, 10]
# Creating the SearchSpace class
s = SearchSpace(n_agents=n_agents,
n_iterations=n_iterations,
n_variables=n_variables,
lower_bound=lower_bound,
upper_bound=upper_bound)
# Hyperparameters for the optimizer
hyperparams = {'w': 0.7, 'c1': 1.7, 'c2': 1.7}
# Creating PSO's optimizer
p = PSO(hyperparams=hyperparams)
# Creating Function's object
f = Function(pointer=Sphere(), constraints=[c_1])
# Finally, we can create an Opytimizer class
o = Opytimizer(space=s, optimizer=p, function=f)
# Running the optimization task
history = o.start()
# Number of running iterations
n_iterations = 1000
# Lower and upper bounds (has to be the same size as n_variables)
lower_bound = [-10, -10]
upper_bound = [10, 10]
# Creating the SearchSpace class
s = SearchSpace(n_agents=n_agents, n_iterations=n_iterations,
n_variables=n_variables, lower_bound=lower_bound,
upper_bound=upper_bound)
# Hyperparameters for the optimizer
hyperparams = {
'alpha': 0.5,
'beta': 0.2,
'gamma': 1.0
}
# Creating FA's optimizer
p = FA(hyperparams=hyperparams)
# Defining task's main function
z = WeightedFunction(functions=[Exponential(), Sphere()], weights=[0.5, 0.5])
# Finally, we can create an Opytimizer class
o = Opytimizer(space=s, optimizer=p, function=z)
# Running the optimization task
history = o.start()
def wrapper(x):
z = Sphere()
return z(x)
import numpy as np from opytimark.markers.n_dimensional import Sphere # Declaring a function from the `n_dimensional` package f = Sphere() # Declaring an input variable for feeding the function x = np.zeros(50) # Printing out the function's output print(f(x))
from opytimizer.spaces import SearchSpace
# Defines a constraint function that returns a boolean
# whether the constraint is valid or not
def c_1(x):
return x[0] + x[1] < 0
# Random seed for experimental consistency
np.random.seed(0)
# Number of agents and decision variables
n_agents = 20
n_variables = 2
# Lower and upper bounds (has to be the same size as `n_variables`)
lower_bound = [-10, -10]
upper_bound = [10, 10]
# Creates the space, optimizer and function
space = SearchSpace(n_agents, n_variables, lower_bound, upper_bound)
optimizer = PSO()
function = ConstrainedFunction(Sphere(), [c_1], penalty=100.0)
# Bundles every piece into Opytimizer class
opt = Opytimizer(space, optimizer, function, save_agents=False)
# Runs the optimization task
opt.start(n_iterations=1000)
def wrapper(x):
s = Sphere()
return s(x)
n_variables = 2
# Number of running iterations
n_iterations = 1000
# Lower and upper bounds (has to be the same size as n_variables)
lower_bound = (-10, -10)
upper_bound = (10, 10)
# Creating the SearchSpace class
s = SearchSpace(n_agents=n_agents,
n_iterations=n_iterations,
n_variables=n_variables,
lower_bound=lower_bound,
upper_bound=upper_bound)
# Hyperparameters for the optimizer
hyperparams = {'w': 0.7, 'c1': 1.7, 'c2': 1.7}
# Creating PSO's optimizer
p = PSO(hyperparams=hyperparams)
# Creating Function's object
f = Function(pointer=Sphere(), constraints=[c_1], penalty=100.0)
# Finally, we can create an Opytimizer class
o = Opytimizer(space=s, optimizer=p, function=f)
# Running the optimization task
history = o.start()