__version__ = '$Id$'
from pybrain.tools.example_tools import ExTools
from pybrain.structure.modules.tanhlayer import TanhLayer
from pybrain.tools.shortcuts import buildNetwork
from pybrain.rl.environments.shipsteer import ShipSteeringEnvironment
from pybrain.rl.environments.shipsteer import GoNorthwardTask
from pybrain.rl.agents import OptimizationAgent
from pybrain.optimization import PGPE
from pybrain.rl.experiments import EpisodicExperiment
batch = 1 #number of samples per learning step
prnts = 50 #number of learning steps after results are printed
epis = int(2000 / batch / prnts) #number of roleouts
numbExp = 10 #number of experiments
et = ExTools(batch, prnts) #tool for printing and plotting
env = None
for runs in range(numbExp):
# create environment
#Options: Bool(OpenGL), Bool(Realtime simu. while client is connected), ServerIP(default:localhost), Port(default:21560)
if env != None: env.closeSocket()
env = ShipSteeringEnvironment()
# create task
task = GoNorthwardTask(env, maxsteps=500)
# create controller network
net = buildNetwork(task.outdim, task.indim, outclass=TanhLayer)
# create agent with controller and learner (and its options)
agent = OptimizationAgent(
net,
PGPE(learningRate=0.3,
__version__ = '$Id$'
from pybrain.tools.example_tools import ExTools
from pybrain.structure.modules.tanhlayer import TanhLayer
from pybrain.tools.shortcuts import buildNetwork
from pybrain.rl.environments.flexcube import FlexCubeEnvironment, WalkTask
from pybrain.rl.agents import OptimizationAgent
from pybrain.optimization import SimpleSPSA
from pybrain.rl.experiments import EpisodicExperiment
hiddenUnits = 4
batch=2 #number of samples per learning step
prnts=1 #number of learning steps after results are printed
epis=5000000/batch/prnts #number of roleouts
numbExp=10 #number of experiments
et = ExTools(batch, prnts) #tool for printing and plotting
for runs in range(numbExp):
# create environment
#Options: Bool(OpenGL), Bool(Realtime simu. while client is connected), ServerIP(default:localhost), Port(default:21560)
env = FlexCubeEnvironment()
# create task
task = WalkTask(env)
# create controller network
net = buildNetwork(len(task.getObservation()), hiddenUnits, env.actLen, outclass=TanhLayer)
# create agent with controller and learner (and its options)
agent = OptimizationAgent(net, SimpleSPSA(storeAllEvaluations = True))
et.agent = agent
# create the experiment
experiment = EpisodicExperiment(task, agent)
#########################################################################
__author__ = "Thomas Rueckstiess, Frank Sehnke"
__version__ = '$Id$'
from pybrain.tools.example_tools import ExTools
from pybrain.tools.shortcuts import buildNetwork
from pybrain.rl.environments.cartpole import CartPoleEnvironment, BalanceTask
from pybrain.rl.agents import LearningAgent
from pybrain.rl.learners import Reinforce
from pybrain.rl.experiments import EpisodicExperiment
batch = 50 #number of samples per learning step
prnts = 4 #number of learning steps after results are printed
epis = 4000 / batch / prnts #number of roleouts
numbExp = 10 #number of experiments
et = ExTools(batch, prnts, kind="learner") #tool for printing and plotting
for runs in range(numbExp):
print 'run: ', runs
# create environment
env = CartPoleEnvironment()
# create task
task = BalanceTask(env, 200, desiredValue=None)
# create controller network
net = buildNetwork(4, 1, bias=False)
# create agent with controller and learner (and its options)
agent = LearningAgent(net, Reinforce())
et.agent = agent
# create the experiment
experiment = EpisodicExperiment(task, agent)
__author__ = "Thomas Rueckstiess, Frank Sehnke"
from pybrain.tools.example_tools import ExTools
from pybrain.tools.shortcuts import buildNetwork
from pybrain.rl.environments.cartpole import CartPoleEnvironment, BalanceTask
from pybrain.rl.agents import LearningAgent
from pybrain.rl.learners import ENAC
from pybrain.rl.experiments import EpisodicExperiment
batch=50 #number of samples per learning step
prnts=4 #number of learning steps after results are printed
epis=4000/batch/prnts #number of roleouts
numbExp=10 #number of experiments
et = ExTools(batch, prnts, kind = "learner") #tool for printing and plotting
for runs in range(numbExp):
# create environment
env = CartPoleEnvironment()
# create task
task = BalanceTask(env, 200, desiredValue=None)
# create controller network
net = buildNetwork(4, 1, bias=False)
# create agent with controller and learner (and its options)
agent = LearningAgent(net, ENAC())
et.agent = agent
# create the experiment
experiment = EpisodicExperiment(task, agent)
#Do the experiment
def run_experiment():
# Create the controller network
HIDDEN_NODES = 4
RUNS = 2
BATCHES = 1
PRINTS = 1
EPISODES = 500
env = None
start_state_net = None
run_results = []
# Set up plotting tools for the experiments
tools = ExTools(BATCHES, PRINTS)
# Run the experiment
for run in range(RUNS):
if run == 0:
continue
# If an environment already exists, shut it down
if env:
env.closeSocket()
# Create the environment
env = create_environment()
# Create the task
task = Pa10MovementTask(env)
# Create the neural network. Only create the network once so it retains
# the same starting values for each run.
if start_state_net:
net = start_state_net.copy()
else:
# Create the initial neural network
net = create_network(
in_nodes=env.obsLen,
hidden_nodes=HIDDEN_NODES,
out_nodes=env.actLen
)
start_state_net = net.copy()
# Create the learning agent
learner = HillClimber(storeAllEvaluations=True)
agent = OptimizationAgent(net, learner)
tools.agent = agent
# Create the experiment
experiment = EpisodicExperiment(task, agent)
# Perform all episodes in the run
for episode in range(EPISODES):
experiment.doEpisodes(BATCHES)
# Calculate results
all_results = agent.learner._allEvaluations
max_result = np.max(all_results)
min_result = np.min(all_results)
avg_result = np.sum(all_results) / len(all_results)
run_results.append((run, max_result, min_result, avg_result))
# Make the results directory if it does not exist
if not os.path.exists(G_RESULTS_DIR):
os.mkdir(G_RESULTS_DIR)
# Write all results to the results file
with open(os.path.join(G_RESULTS_DIR, 'run_%d.txt' % run), 'w+') as f:
# Store the calculated max, min, avg
f.write('RUN, MAX, MIN, AVG\n')
f.write('%d, %f, %f, %f\n' % (run, max_result, min_result, avg_result))
# Store all results from this run
f.write('EPISODE, REWARD\n')
for episode, result in enumerate(all_results):
f.write('%d, %f\n' % (episode, result))
return
def main():
""" Main program for automatic asset allocation problem.
"""
# Directories
input_data_dir = '../../Data/Input/'
output_data_dir = '../../Data/Output/'
# Experiment parameters
batch = 1 # Number of samples per learning step
prnts = 100 # Learning steps before printing results
nEpisodes = 100/batch/prnts # Number of rollouts
nExperiments = 1 # Number of experiments
et = ExTools(batch, prnts) # Tool for printing and plotting
# Paramenters
X = 0.0 / 252 # Daily risk-free rate
deltaP = 0.00 # Proportional transaction costs
deltaF = 0.0 # Fixed transaction costs
deltaS = 0.00 # Short-selling borrowing costs
P = 5 # Number of past days the agent considers
discount = 0.95 # Discount factor
# Evaluation interval sizes
start = P + 1
trainingIntervalLength = 70
testIntervalLength = 30
# Initialize the market environment
market = MarketEnvironment(input_data_dir + 'daily_returns.csv', X, P)
nSamples = len(market.data)
nPeriods = (nSamples - start + 1) / (trainingIntervalLength + testIntervalLength)
# Initialize the asset allocation tasks
task = AssetAllocationTask(market, deltaP, deltaF, deltaS, discount)
# Initialize controller module
module = buildNetwork(market.outdim, # Input layer
market.indim, # Output layer
outclass=SoftmaxLayer) # Output activation function
# Initialize learner module
learner = PGPE(storeAllEvaluations=True,
learningRate=0.01,
sigmaLearningRate=0.01,
batchSize=batch,
# momentum=0.05,
# epsilon=6.0,
rprop=False)
# Initialize learning agent
agent = OptimizationAgent(module, learner)
et.agent = agent
for period in xrange(5): # nPeriods):
# Set initial and final time steps for training
initialTimeStep = start
finalTimeStep = start + trainingIntervalLength
task.setEvaluationInterval(initialTimeStep, finalTimeStep)
task.trainingMode()
# Initialize experiment
experiment = EpisodicExperiment(task, agent)
# Train the agent
for episode in xrange(nEpisodes):
for i in xrange(prnts):
experiment.doEpisodes(batch)
et.printResults((agent.learner._allEvaluations)[-50:-1],
1, episode)
# Set initial and final time steps for training
initialTimeStep = start + trainingIntervalLength
finalTimeStep = initialTimeStep + testIntervalLength
task.setEvaluationInterval(initialTimeStep, finalTimeStep)
task.backtestMode()
# Initialize experiment
experiment = EpisodicExperiment(task, agent)
# Test the agent
experiment.doEpisodes(batch)
# Slide evaluation window
start += testIntervalLength
# Print allocations
task.report.iloc[:, :-1].plot.area(title='Portfolio Allocation - PGPE')
plt.ylim(0.0, 1.0)
plt.xlabel('Date')
plt.ylabel('Portfolio Allocation')
plt.show()
# Print cumulative log-returns
buyHold = market.data.ix[task.report.index, 'SPY']
buyHoldCumLogReturns = np.log(buyHold + 1.0).cumsum(axis=0)
ptfCumLogReturns = task.report['ptfLogReturn'].cumsum(axis=0)
cumLogReturns = pd.DataFrame(index=task.report.index)
cumLogReturns['Buy & Hold'] = buyHoldCumLogReturns
cumLogReturns['PGPE'] = ptfCumLogReturns
cumLogReturns.plot(title='Cumulative Log-Returns - PGPE',
lw=2, grid=True)
plt.xlabel('Date')
plt.ylabel('Cumulative Log-Returns')
plt.show()