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evaluate_metabo_furuta.py
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evaluate_metabo_furuta.py
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# Copyright (c) 2019 Robert Bosch GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# ******************************************************************
# evaluate_metabo_furuta.py
# Reproduce results from MetaBO paper on Furuta control task in simulation
# For convenience, we provide the pretrained weights resulting from the experiments described in the paper.
# These weights can be reproduced using train_metabo_furuta.py
# ******************************************************************
import os
from metabo.eval.evaluate import eval_experiment
from metabo.eval.plot_results import plot_results
from metabo.policies.taf.generate_taf_data_furuta import generate_taf_data_furuta
from gym.envs.registration import register, registry
from datetime import datetime
# set evaluation parameters
afs_to_evaluate = ["MetaBO", "TAF-ME", "TAF-RANKING", "EI"]
rootdir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "metabo")
logpath = os.path.join(rootdir, "iclr2020", "furuta", "full", "MetaBO-Furuta-v0")
savepath = os.path.join(logpath, "eval", datetime.strftime(datetime.now(), "%Y-%m-%d-%H-%M-%S"))
n_workers = 10
n_episodes = 100
# evaluate all afs
for af in afs_to_evaluate:
# set af-specific parameters
if af == "MetaBO":
features = ["posterior_mean", "posterior_std", "x"]
pass_X_to_pi = False
n_init_samples = 0
load_iter = 1405 # best ppo iteration during training, determined via metabo/ppo/util/get_best_iter_idx
deterministic = True
policy_specs = {} # will be loaded from the logfiles
elif af == "TAF-ME" or af == "TAF-RANKING":
generate_taf_data_furuta(M=100)
features = ["posterior_mean", "posterior_std", "incumbent", "timestep", "x"]
pass_X_to_pi = True
n_init_samples = 0
load_iter = None # does only apply for MetaBO
deterministic = None # does only apply for MetaBO
policy_specs = {"TAF_datafile": os.path.join(rootdir, "policies", "taf", "taf_furuta_M_100_N_200.pkl")}
else:
features = ["posterior_mean", "posterior_std", "incumbent", "timestep"]
pass_X_to_pi = False
n_init_samples = 1
load_iter = None # does only apply for MetaBO
deterministic = None # does only apply for MetaBO
if af == "EI":
policy_specs = {}
elif af == "Random":
policy_specs = {}
else:
raise ValueError("Unknown AF!")
# define environment
true_mass_arm = 0.095
true_mass_pendulum = 0.024
true_length_arm = 0.085
true_length_pendulum = 0.129
low_mult = 0.1
high_mult = 2.0
env_spec = {
"env_id": "MetaBO-Furuta-v0",
"D": 4,
"f_type": "Furuta",
"f_opts": {"furuta_domain": [[-0.5, 0.2],
[-1.6, 4.0],
[-0.1, 0.04],
[-0.04, 0.1]],
"mass_arm_low": low_mult * true_mass_arm,
"mass_arm_high": high_mult * true_mass_arm,
"mass_pendulum_low": low_mult * true_mass_pendulum,
"mass_pendulum_high": high_mult * true_mass_pendulum,
"length_arm_low": low_mult * true_length_arm,
"length_arm_high": high_mult * true_length_arm,
"length_pendulum_low": low_mult * true_length_pendulum,
"length_pendulum_high": high_mult * true_length_pendulum,
"pos": [0, 1, 2, 3]},
"features": features,
"T": 50,
"n_init_samples": n_init_samples,
"pass_X_to_pi": pass_X_to_pi,
"kernel_lengthscale": [0.1, 0.1, 0.1, 0.1],
"kernel_variance": 1.5,
"noise_variance": 1e-2,
"use_prior_mean_function": True,
"local_af_opt": True,
"N_MS": 10000,
"N_LS": 1000,
"k": 5,
"reward_transformation": "none",
}
# register gym environment
if env_spec["env_id"] in registry.env_specs:
del registry.env_specs[env_spec["env_id"]]
register(
id=env_spec["env_id"],
entry_point="metabo.environment.metabo_gym:MetaBO",
max_episode_steps=env_spec["T"],
reward_threshold=None,
kwargs=env_spec
)
# define evaluation run
eval_spec = {
"env_id": env_spec["env_id"],
"env_seed_offset": 100,
"policy": af,
"logpath": logpath,
"load_iter": load_iter,
"deterministic": deterministic,
"policy_specs": policy_specs,
"savepath": savepath,
"n_workers": n_workers,
"n_episodes": n_episodes,
"T": env_spec["T"],
}
# perform evaluation
print("Evaluating {} on {}...".format(af, env_spec["env_id"]))
eval_experiment(eval_spec)
print("Done! Saved result in {}".format(savepath))
print("**********************\n\n")
# plot (plot is saved to savepath)
print("Plotting...")
plot_results(path=savepath, logplot=False)
print("Done! Saved plot in {}".format(savepath))