class CarRacingMDNRNN(CarRacingWrapper):
def __init__(self, load_model=True, full_episode=False):
super(CarRacingMDNRNN, self).__init__(full_episode=full_episode)
self.vae = CVAE(batch_size=1)
self.rnn = MDNRNN(hps_sample)
if load_model:
self.vae.load_json('tf_vae/vae.json')
self.rnn.load_json('tf_rnn/rnn.json')
self.rnn_states = rnn_init_state(self.rnn)
self.full_episode = False
self.observation_space = Box(low=np.NINF, high=np.Inf, shape=(32+256))
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float)/255.0
result = result.reshape(1, 64, 64, 3)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar/2.0) * np.random.randn(*s)
return z, mu, logvar
def reset(self):
self.rnn_states = rnn_init_state(self.rnn)
z_h = super(CarRacingWrapper, self).reset() # calls step
return z_h
def _step(self, action):
obs, reward, done, _ = super(CarRacingMDNRNN, self)._step(action)
z, _, _ = self.encode_obs(obs)
h = tf.squeeze(self.rnn_states[0])
z_h = tf.concat([z, h], axis=-1)
if action is not None: # don't compute state on reset
self.rnn_states = rnn_next_state(self.rnn, z, action, self.rnn_states)
return z_h, reward, done, {}
class VAERacing(CarRacing):
def __init__(self, full_episode=False):
super(VAERacing, self).__init__()
self._internal_counter = 0
self.z_size = games['vae_racing'].input_size
#print("vae_racing.py z", self.z_size)
self.vae = ConvVAE(batch_size=1, z_size=self.z_size, gpu_mode=True, is_training=False, reuse=True)
#print("vae_racing.py vae", self.vae)
self.vae.load_json('vae/vae_'+str(self.z_size)+'.json')
self.full_episode = full_episode
high = np.array([np.inf] * self.z_size)
self.observation_space = Box(-high, high)
self._has_rendered = False
self.real_frame = None
def reset(self):
self._internal_counter = 0
self._has_rendered = False
self.real_frame = None
obs = super(VAERacing, self).reset()
result = np.copy(_process_frame(obs)).astype(np.float)/255.0
result = result.reshape(1, 64, 64, 3)
self.real_frame = result
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar/2.0) * np.random.randn(*s)
if MU_MODE:
return mu
return z
def render(self, mode='human', close=False):
if mode == 'human' or mode == 'rgb_array':
self._has_rendered = True
return super(VAERacing, self).render(mode=mode)
def step(self, action):
#print("action", action)
if not self._has_rendered:
self.render("rgb_array")
self._has_rendered = False
if action is not None:
action[0] = _clip(action[0], lo=-1.0, hi=+1.0)
action[1] = _clip(action[1], lo=-1.0, hi=+1.0)
action[1] = (action[1]+1.0) / 2.0
action[2] = _clip(action[2])
obs, reward, done, _ = super(VAERacing, self).step(action)
result = np.copy(_process_frame(obs)).astype(np.float)/255.0
result = result.reshape(1, 64, 64, 3)
self.real_frame = result
#z = self.vae.encode(result).flatten()
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar/2.0) * np.random.randn(*s)
if self.full_episode:
if MU_MODE:
return mu, reward, False, {}
else:
return z, reward, False, {}
self._internal_counter += 1
if self._internal_counter > TIME_LIMIT:
done = True
if MU_MODE:
#print("mu", mu)
return mu, reward, done, {}
return z, reward, done, {}
class Model:
''' simple one layer model for car racing '''
def __init__(self):
self.env_name = "carracing"
self.vae = ConvVAE(batch_size=1, gpu_mode=False, is_training=False, reuse=True)
self.vae.load_json('vae/vae.json')
self.rnn = MDNRNN(hps_sample, gpu_mode=False, reuse=True)
self.rnn.load_json('rnn/rnn.json')
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
self.input_size = rnn_output_size(EXP_MODE)
self.z_size = 32
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size, self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(self.hidden_size, 3)
self.bias_output = np.random.randn(3)
self.param_count = ((self.input_size+1)*self.hidden_size) + (self.hidden_size*3+3)
else:
self.weight = np.random.randn(self.input_size, 3)
self.bias = np.random.randn(3)
self.param_count = (self.input_size)*3+3
self.render_mode = False
def make_env(self, seed=-1, render_mode=False):
self.render_mode = render_mode
self.env = make_env(self.env_name, seed=seed, render_mode=render_mode)
def reset(self):
self.state = rnn_init_state(self.rnn)
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float)/255.0
result = result.reshape(1, 64, 64, 3)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar/2.0) * np.random.randn(*s)
return z, mu, logvar
def decode_obs(self, z):
# decode the latent vector
img = self.vae.decode(z.reshape(1, self.z_size)) * 255.
img = np.round(img).astype(np.uint8)
img = img.reshape(64, 64, 3)
return img
def get_action(self, z):
h = rnn_output(self.state, z, EXP_MODE)
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
h = np.tanh(np.dot(h, self.weight_hidden) + self.bias_hidden)
action = np.tanh(np.dot(h, self.weight_output) + self.bias_output)
else:
action = np.tanh(np.dot(h, self.weight) + self.bias)
action[1] = (action[1]+1.0) / 2.0
action[2] = clip(action[2])
self.state = rnn_next_state(self.rnn, z, action, self.state)
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size+1)*self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(self.input_size, self.hidden_size)
self.bias_output = params_2[:3]
self.weight_output = params_2[3:].reshape(self.hidden_size, 3)
else:
self.bias = np.array(model_params[:3])
self.weight = np.array(model_params[3:]).reshape(self.input_size, 3)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
return np.random.randn(self.param_count)*stdev
class Model:
''' simple one layer model for translating game state to actions'''
def __init__(self, load_model=True):
self.env_name = "Pong"
self._make_env()
self.vae = ConvVAE(batch_size=1,
gpu_mode=False,
is_training=False,
reuse=True)
hps_sample_dynamic = hps_sample._replace(num_actions=self.num_actions)
self.rnn = MDNRNN(hps_sample_dynamic, gpu_mode=False, reuse=True)
if load_model:
self.vae.load_json('vae/vae.json')
self.rnn.load_json('rnn/rnn.json')
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
self.input_size = rnn_output_size(EXP_MODE)
self.z_size = 32
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
raise Exception("not ported for atari")
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size,
self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(self.hidden_size,
self.num_actions)
self.bias_output = np.random.randn(self.num_actions)
self.param_count = ((self.input_size + 1) * self.hidden_size) + (
(self.hidden_size + 1) * self.num_actions)
else:
# TODO: Not known until env.action_space is queried...
self.weight = np.random.randn(self.input_size, self.num_actions)
self.bias = np.random.randn(self.num_actions)
self.param_count = (self.input_size + 1) * self.num_actions
self.render_mode = False
def _make_env(self):
self.render_mode = render_mode
self.env = make_env(self.env_name)
self.num_actions = self.env.action_space.n
def make_env(self):
pass #TODO (Chazzz): eventually remove
def reset(self):
self.state = rnn_init_state(self.rnn)
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float) / 255.0
result = result.reshape(1, 64, 64, 1)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar / 2.0) * np.random.randn(*s)
return z, mu, logvar
def get_action(self, z):
h = rnn_output(self.state, z, EXP_MODE)
# print(len(h), " h:", h) #TODO: 256+32 (the 32 comes first)
# So we could have 288*2*18 params, or 288*2*environment.action_space.n (6 for Pong)
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
raise Exception("Not ported to atari")
# h = np.tanh(np.dot(h, self.weight_hidden) + self.bias_hidden)
# action = np.tanh(np.dot(h, self.weight_output) + self.bias_output)
else:
# could probabilistically sample from softmax, but greedy
action = np.argmax(np.matmul(h, self.weight) + self.bias)
# action[1] = (action[1]+1.0) / 2.0
# action[2] = clip(action[2])
# print("Action:", action)
action_one_hot = np.zeros(self.num_actions)
action_one_hot[action] = 1
# print("Action hot:", action_one_hot)
self.state = rnn_next_state(self.rnn, z, action_one_hot, self.state)
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size + 1) * self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(
self.input_size, self.hidden_size)
self.bias_output = params_2[:self.num_actions]
self.weight_output = params_2[self.num_actions:].reshape(
self.hidden_size, self.num_actions)
else:
self.bias = np.array(model_params[:self.num_actions])
self.weight = np.array(model_params[self.num_actions:]).reshape(
self.input_size, self.num_actions)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
#return np.random.randn(self.param_count)*stdev
return np.random.standard_cauchy(
self.param_count) * stdev # spice things up
def init_random_model_params(self, stdev=0.1):
params = self.get_random_model_params(stdev=stdev)
self.set_model_params(params)
vae_params = self.vae.get_random_model_params(stdev=stdev)
self.vae.set_model_params(vae_params)
rnn_params = self.rnn.get_random_model_params(stdev=stdev)
self.rnn.set_model_params(rnn_params)
class Model:
''' simple one layer model for car racing '''
def __init__(self, load_model=True):
self.env_name = './VisualPushBlock_withBlock_z_info.x86_64' #'./VisualPushBlock.x86_64'
self.vae = ConvVAE(batch_size=1,
gpu_mode=False,
is_training=False,
reuse=True)
self.rnn = MDNRNN(hps_sample, gpu_mode=False, reuse=True)
if load_model:
self.vae.load_json('vae/vae.json')
self.rnn.load_json('rnn/rnn.json')
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
self.input_size = rnn_output_size(EXP_MODE)
self.z_size = z_size
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer ###CHANGE is made here
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size,
self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(self.hidden_size, ACTION_SIZE)
self.bias_output = np.random.randn(ACTION_SIZE)
self.param_count = ((self.input_size + 1) * self.hidden_size) + (
self.hidden_size * ACTION_SIZE + ACTION_SIZE)
else:
self.weight = np.random.randn(self.input_size, ACTION_SIZE)
self.bias = np.random.randn(ACTION_SIZE)
self.param_count = (self.input_size) * ACTION_SIZE + ACTION_SIZE
self.render_mode = False
def make_env(self,
seed=-1,
render_mode=False,
full_episode=False,
worker_id=0):
self.render_mode = render_mode
self.env = make_env(self.env_name,
seed=seed,
render_mode=render_mode,
full_episode=full_episode,
worker_id=worker_id)
def reset(self):
self.state = rnn_init_state(self.rnn)
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
#result = np.copy(obs).astype(np.float)/255.0
result = np.copy(obs).astype(np.float)
result = result.reshape(1, IMAGE_W, IMAGE_H, 3)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar / 2.0) * np.random.randn(*s)
return z, mu, logvar
def get_action(self, z):
h = rnn_output(self.state, z, EXP_MODE)
#print('h', h.shape, h)
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
h = np.tanh(np.dot(h, self.weight_hidden) + self.bias_hidden)
action = np.tanh(np.dot(h, self.weight_output) + self.bias_output)
else:
'''print(h.shape)
print(self.weight.shape)
print(self.bias.shape)'''
action = np.tanh(np.dot(h, self.weight) + self.bias)
'''for i in range(ACTION_SIZE):
action[i] = (action[i]+1.0) / 2.0 #all actions value are in range 0 to 1'''
#action[2] = clip(action[2])
self.state = rnn_next_state(self.rnn, z, action,
self.state) #update weights of MDN-RNN
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size + 1) * self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(
self.input_size, self.hidden_size)
self.bias_output = params_2[:ACTION_SIZE]
self.weight_output = params_2[ACTION_SIZE:].reshape(
self.hidden_size, ACTION_SIZE)
else:
self.bias = np.array(model_params[:ACTION_SIZE])
self.weight = np.array(model_params[ACTION_SIZE:]).reshape(
self.input_size, ACTION_SIZE)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
#return np.random.randn(self.param_count)*stdev
return np.random.standard_cauchy(
self.param_count) * stdev # spice things up
def init_random_model_params(self, stdev=0.1):
params = self.get_random_model_params(stdev=stdev)
self.set_model_params(params)
vae_params = self.vae.get_random_model_params(stdev=stdev)
self.vae.set_model_params(vae_params)
rnn_params = self.rnn.get_random_model_params(stdev=stdev)
self.rnn.set_model_params(rnn_params)
class CarRacing:
# Parameters
# - type: Name of environment. Default is classic Car Racing game, but can be changed to introduce perturbations in environment
# - history_pick: Size of history
# - seed: List of seeds to sample from during training. Default is none (random games)
def __init__(self, type="CarRacing", history_pick=4, seed=None, detect_edges=False, detect_grass=False, flip=False):
self.name = type + str(time.time())
random.seed(30)
self.env = make_env('CarRacing-v0', random.randint(1,10000000), render_mode = False, full_episode = True)
self.image_dimension = [64,64]
self.history_pick = history_pick
self.state_space_size = history_pick * np.prod(self.image_dimension)
self.action_space_size = 5
self.state_shape = [None, self.history_pick] + list(self.image_dimension)
self.history = []
self.action_dict = {0: [-1, 0, 0], 1: [1, 0, 0], 2: [0, 1, 0], 3: [0, 0, 0.8], 4: [0, 0, 0]}
self.seed = seed
self.detect_edges = detect_edges
self.detect_grass = detect_grass
self.flip = flip
self.flip_episode = False
self.vae = ConvVAE(batch_size=1, gpu_mode=False, is_training=False, reuse=True)
self.rnn = MDNRNN(hps_sample, gpu_mode=False, reuse=True)
self.vae.load_json('vae/vae.json')
self.rnn.load_json('rnn/rnn.json')
# returns a random action
def sample_action_space(self):
return np.random.randint(self.action_space_size)
def map_action(self, action):
if self.flip_episode and action <= 1:
action = 1 - action
return self.action_dict[action]
# resets the environment and returns the initial state
def reset(self, test=False):
self.state_rnn = rnn_init_state(self.rnn)
if self.seed:
self.env.seed(random.choice(self.seed))
self.flip_episode = random.random() > 0.5 and not test and self.flip
state, self.state_rnn = self.encode_obs(self.env.reset(), self.state_rnn, np.array([0.5, 0.2, 0.8]))
return state, 1
# take action
def step(self, action, test=False):
action = self.map_action(action)
total_reward = 0
n = 1 if test else random.choice([2, 3, 4])
for i in range(n):
next_state, reward, done, info = self.env.step(action)
next_state, self. state_rnn = self.encode_obs(next_state, self.state_rnn, action)
total_reward += reward
info = {'true_done': done}
if done: break
return next_state, total_reward, done, info, 1
def render(self):
self.env.render()
# process state and return the current history
def process(self, state):
self.add_history(state)
in_grass = utils.in_grass(state)
if len(self.history) < self.history_pick:
zeros = np.zeros(self.image_dimension)
result = np.tile(zeros, ((self.history_pick - len(self.history)), 1, 1))
result = np.concatenate((result, np.array(self.history)))
else:
result = np.array(self.history)
return result, in_grass
def add_history(self, state):
if len(self.history) >= self.history_pick:
self.history.pop(0)
#temp = utils.process_image(state, detect_edges=self.detect_edges, flip=self.flip_episode)
self.history.append(state)
def __str__(self):
return self.name + '\nseed: {0}\nactions: {1}'.format(self.seed, self.action_dict)
def encode_obs(self, obs, prev_state, action):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float)/255.0
result = result.reshape(1, 64, 64, 3)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar/2.0) * np.random.randn(*s)
h = rnn_output(prev_state, z, 4)
next_state = rnn_next_state(self.rnn, z, np.array(action), prev_state)
return np.concatenate([h, z]), next_state
class Model:
''' simple one layer model for car racing '''
def __init__(self, load_model=True, env_name="Pong-v0", render_mode=False):
self.env_name = env_name
self.make_env()
self.z_size = 32
self.vae = ConvVAE(batch_size=1,
gpu_mode=False,
is_training=False,
reuse=True)
hps_atari = hps_sample._replace(input_seq_width=self.z_size + self.na)
self.rnn = MDNRNN(hps_atari, gpu_mode=False, reuse=True)
if load_model:
self.vae.load_json('vae/vae.json')
self.rnn.load_json('rnn/rnn.json')
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
self.input_size = rnn_output_size(EXP_MODE)
self.init_controller()
self.render_mode = False
# INIT The Controller After the enviroment Creation.
def make_env(self, seed=-1, render_mode=False):
self.render_mode = render_mode
self.env = make_env(self.env_name, seed=seed, render_mode=render_mode)
self.na = self.env.action_space.n # discrete by default.
def init_controller(self):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size,
self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(
self.hidden_size, self.na) # pong. Modify later.
self.bias_output = np.random.randn(self.na)
self.param_count = (self.input_size + 1) * self.hidden_size + (
self.hidden_size + 1) * self.na
else:
self.weight = np.random.randn(self.input_size, self.na)
self.bias = np.random.randn(self.na)
self.param_count = (self.input_size + 1) * self.na
def reset(self):
self.state = rnn_init_state(self.rnn)
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float) / 255.0
result = result.reshape(1, 64, 64, 1)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar / 2.0) * np.random.randn(*s)
return z, mu, logvar
def get_action(self, z, epsilon=0.0):
h = rnn_output(self.state, z, EXP_MODE)
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
if np.random.rand() < epsilon:
action = np.random.randint(0, self.na)
else:
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
h = np.maximum(
np.dot(h, self.weight_hidden) + self.bias_hidden, 0)
action = np.argmax(
np.dot(h, self.weight_output) + self.bias_output)
else:
action = np.argmax(np.dot(h, self.weight) + self.bias)
oh_action = np.zeros(self.na)
oh_action[action] = 1
# action[1] = (action[1]+1.0) / 2.0
# action[2] = clip(action[2])
# TODO check about this fucntion
self.state = rnn_next_state(self.rnn, z, oh_action, self.state)
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size + 1) * self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(
self.input_size, self.hidden_size)
self.bias_output = params_2[:self.na]
self.weight_output = params_2[self.na:].reshape(
self.hidden_size, self.na)
else:
self.bias = np.array(model_params[:self.na])
self.weight = np.array(model_params[self.na:]).reshape(
self.input_size, self.na)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
#return np.random.randn(self.param_count)*stdev
return np.random.standard_cauchy(
self.param_count) * stdev # spice things up
def init_random_model_params(self, stdev=0.1):
params = self.get_random_model_params(stdev=stdev)
self.set_model_params(params)
vae_params = self.vae.get_random_model_params(stdev=stdev)
self.vae.set_model_params(vae_params)
rnn_params = self.rnn.get_random_model_params(stdev=stdev)
self.rnn.set_model_params(rnn_params)
class Model:
''' simple one layer model for car racing '''
def __init__(self, arglist):
self.env_name = arglist.game
self.vae = ConvVAE(batch_size=1,
gpu_mode=False,
is_training=False,
reuse=True)
self.vae.load_json(arglist.vae_file)
self.rnn = MDNRNN(hps_sample, gpu_mode=False, reuse=True)
self.rnn.load_json(arglist.rnn_file)
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
self.input_size = rnn_output_size(EXP_MODE)
self.z_size = 32
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size,
self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(self.hidden_size, 2)
self.bias_output = np.random.randn(2)
self.param_count = ((self.input_size + 1) *
self.hidden_size) + (self.hidden_size * 2 + 2)
else:
self.weight = np.random.randn(self.input_size, 2)
self.bias = np.random.randn(2)
self.param_count = (self.input_size) * 2 + 2
self.render_mode = False
def make_env(self, seed=-1, render_mode=False):
self.render_mode = render_mode
self.env = make_env(self.env_name, seed=seed, render_mode=render_mode)
def reset(self):
self.state = rnn_init_state(self.rnn)
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float) / 255.0
result = result.reshape(1, 64, 64, 3)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar / 2.0) * np.random.randn(*s)
return z, mu, logvar
def decode_obs(self, z):
# decode the latent vector
img = self.vae.decode(z.reshape(1, self.z_size)) * 255.
img = np.round(img).astype(np.uint8)
img = img.reshape(64, 64, 3)
return img
def get_action(self, z, arglist):
h = rnn_output(self.state, z, EXP_MODE)
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
h = np.tanh(np.dot(h, self.weight_hidden) + self.bias_hidden)
action = np.tanh(np.dot(h, self.weight_output) + self.bias_output)
else:
action = np.tanh(np.dot(h, self.weight) + self.bias)
if arglist.competitive:
obs, rewards, done, win = self.env.step([action[0], 'script'])
else:
obs, rewards, done, win = self.env.step(action)
extra_reward = 0.0 # penalize for turning too frequently
if arglist.competitive:
if arglist.train_mode and penalize_turning:
extra_reward -= np.abs(action[0]) / 10.0
rewards[0] += extra_reward
reward = rewards[0]
else:
if arglist.train_mode and penalize_turning:
reward = np.sum(rewards)
extra_reward -= np.abs(action[0]) / 10.0
reward += extra_reward
# recording_reward.append(reward)
# total_reward += reward
self.state = rnn_next_state(self.rnn, z, action, self.state)
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size + 1) * self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(
self.input_size, self.hidden_size)
self.bias_output = params_2[:2]
self.weight_output = params_2[2:].reshape(self.hidden_size, 2)
else:
self.bias = np.array(model_params[:2])
self.weight = np.array(model_params[2:]).reshape(
self.input_size, 2)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
return np.random.randn(self.param_count) * stdev
class Model:
''' simple one layer model for car racing '''
def __init__(self, load_model=True):
self.env_name = 'Carracing'
self.vae = ConvVAE(batch_size=1,
gpu_mode=False,
is_training=False,
reuse=True)
self.rnn = MDNRNN(hps_sample, gpu_mode=False, reuse=True)
if load_model:
self.vae.load_json('vae/vae.json')
self.rnn.load_json('rnn/rnn.json')
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
self.input_size = rnn_output_size(EXP_MODE)
self.z_size = 16
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size,
self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(self.hidden_size, 3)
self.bias_output = np.random.randn(3)
self.param_count = ((self.input_size + 1) *
self.hidden_size) + (self.hidden_size * 3 + 3)
else:
self.weight = np.random.randn(self.input_size, 3)
self.bias = np.random.randn(3)
self.param_count = (self.input_size) * 3 + 3
self.render_mode = False
def make_env(self, client, seed=-1, render_mode=False, full_episode=False):
self.client = client
self.render_mode = render_mode
self.env = TorcsEnv(
vision=False, throttle=True, gear_change=False
) #make_env(self.env_name, seed=seed, render_mode=render_mode, full_episode=full_episode)
def reset(self):
self.state = rnn_init_state(self.rnn)
def encode_obs(self, obs):
dictlist = []
for key, value in obs.items():
if key == 'opponents' or key == 'track' or key == 'wheelSpinVel' or key == 'focus':
dictlist = dictlist + value
else:
dictlist.append(value)
obs = dictlist
result = np.copy(obs).astype(np.float) / 255.0
result = result.reshape(1, 79, 1)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar / 2.0) * np.random.randn(*s)
return z, mu, logvar
def get_action(self, z):
h = rnn_output(self.state, z, EXP_MODE)
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
h = np.tanh(np.dot(h, self.weight_hidden) + self.bias_hidden)
action = np.tanh(np.dot(h, self.weight_output) + self.bias_output)
else:
action = np.tanh(np.dot(h, self.weight) + self.bias)
action[0] = action[0]
action[1] = (action[1] + 1.0) / 2.0
action[2] = clip(action[2])
self.state = rnn_next_state(self.rnn, z, action, self.state)
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size + 1) * self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(
self.input_size, self.hidden_size)
self.bias_output = params_2[:3]
self.weight_output = params_2[3:].reshape(self.hidden_size, 3)
else:
self.bias = np.array(model_params[:3])
self.weight = np.array(model_params[3:]).reshape(
self.input_size, 3)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
#return np.random.randn(self.param_count)*stdev
return np.random.standard_cauchy(
self.param_count) * stdev # spice things up
def init_random_model_params(self, stdev=0.1):
params = self.get_random_model_params(stdev=stdev)
self.set_model_params(params)
vae_params = self.vae.get_random_model_params(stdev=stdev)
self.vae.set_model_params(vae_params)
rnn_params = self.rnn.get_random_model_params(stdev=stdev)
self.rnn.set_model_params(rnn_params)
class Model:
''' simple one layer model for car racing '''
def __init__(self, arglist, action_space, scope, load_model=True):
self.action_space = action_space
self.arglist = arglist
self.vae = ConvVAE(batch_size=1,
gpu_mode=False,
is_training=False,
reuse=True)
hps_sample = hps_model._replace(
batch_size=1,
input_seq_width=32 + arglist.action_space +
(arglist.agent_num - 1) * arglist.action_space * arglist.timestep,
max_seq_len=1,
use_recurrent_dropout=0,
is_training=0)
self.rnn = MDNRNN(hps_sample, gpu_mode=False, reuse=True)
if load_model:
self.vae.load_json(arglist.vae_model_dir)
self.rnn.load_json(arglist.rnn_model_dir)
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
if arglist.inference:
self.input_size = rnn_output_size(
EXP_MODE) + (arglist.agent_num - 1) * arglist.action_space
else:
self.input_size = rnn_output_size(EXP_MODE)
self.z_size = 32
# action trajectories recording
self.act_traj = [
collections.deque(np.zeros(
(arglist.timestep, arglist.action_space)),
maxlen=arglist.timestep)
] * (arglist.agent_num - 1)
self.oppo_model = Oppo_Model(arglist.agent_num, arglist.timestep,
arglist.action_space,
arglist.action_space,
"oppo_model_{}".format(scope))
self.inference = arglist.inference
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size,
self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(self.hidden_size,
self.action_space)
self.bias_output = np.random.randn(self.action_space)
self.param_count = ((self.input_size + 1) * self.hidden_size) + (
self.hidden_size * self.action_space + self.action_space)
else:
self.weight = np.random.randn(self.input_size, self.action_space)
self.bias = np.random.randn(self.action_space)
self.param_count = (
self.input_size) * self.action_space + self.action_space
def reset(self):
self.state = rnn_init_state(self.rnn)
# self.oppo_state = lstm_init_state(self.oppo_model)
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float) / 255.0
result = result.reshape(1, 64, 64, 3)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar / 2.0) * np.random.randn(*s)
return z, mu, logvar
def get_action(self, z):
h = rnn_output(self.state, z, EXP_MODE)
if self.arglist.inference:
oppo_intents = []
for i in range(self.arglist.agent_num - 1):
act_traj = self.act_traj[i]
intent = self.oppo_model.get_inference(act_traj)
oppo_intents.append(intent)
oppo_intents = np.reshape(
oppo_intents,
((self.arglist.agent_num - 1) * self.arglist.action_space))
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
#Oppo intent shape (batch_size, agent_num, action_space)
# reshape oppo_intent agent_num * batch_size * action_space
controller_input = np.concatenate((h, oppo_intents))
else:
controller_input = h
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
x = np.tanh(
np.dot(controller_input, self.weight_hidden) +
self.bias_hidden)
action = np.tanh(np.dot(x, self.weight_output) + self.bias_output)
else:
action = np.tanh(np.dot(controller_input, self.weight) + self.bias)
for i in range(self.action_space):
action[i] = clip(action[i])
self.state = rnn_next_state(self.rnn, z, action, self.act_traj,
self.state)
# self.oppo_state = oppo_next_state(self.oppo_model, action, self.act_traj, self.oppo_state)
# epsilon exploration
if np.random.uniform(0, 1) < 0.2:
action = [np.random.uniform(-3, 3)] * len(action)
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size + 1) * self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(
self.input_size, self.hidden_size)
self.bias_output = params_2[:self.action_space]
self.weight_output = params_2[self.action_space:].reshape(
self.hidden_size, self.action_space)
else:
self.bias = np.array(model_params[:self.action_space])
self.weight = np.array(model_params[self.action_space:]).reshape(
self.input_size, self.action_space)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
#return np.random.randn(self.param_count)*stdev
return np.random.standard_cauchy(
self.param_count) * stdev # spice things up
def init_random_model_params(self, stdev=0.1):
params = self.get_random_model_params(stdev=stdev)
self.set_model_params(params)
vae_params = self.vae.get_random_model_params(stdev=stdev)
self.vae.set_model_params(vae_params)
rnn_params = self.rnn.get_random_model_params(stdev=stdev)
self.rnn.set_model_params(rnn_params)
class VAERacingWorld(CarRacing):
def __init__(self, full_episode=False, pure_world=False):
super(VAERacingWorld, self).__init__()
self._internal_counter = 0
self.z_size = games['vae_racing'].input_size
self.vae = ConvVAE(batch_size=1,
z_size=self.z_size,
gpu_mode=False,
is_training=False,
reuse=True)
self.vae.load_json('vae/vae_' + str(self.z_size) + '.json')
self.full_episode = full_episode
if pure_world:
high = np.array([np.inf] * 10)
else:
high = np.array([np.inf] * (self.z_size + 10))
self.observation_space = Box(-high, high)
self._has_rendered = False
self.real_frame = None
self.world_model = SimpleWorldModel(obs_size=16,
action_size=3,
hidden_size=10)
world_model_path = "./log/learn_vae_racing.cma.4.64.best.json"
self.world_model.load_model(world_model_path)
self.pure_world_mode = pure_world
def _reset(self):
self._internal_counter = 0
self._has_rendered = False
self.real_frame = None
return super(VAERacingWorld, self)._reset()
def _render(self, mode='human', close=False):
if mode == 'human' or mode == 'rgb_array':
self._has_rendered = True
return super(VAERacingWorld, self)._render(mode=mode, close=close)
def _step(self, action):
if not self._has_rendered:
self._render("rgb_array")
self._has_rendered = False
old_action = [0, 0, 0]
if action is not None:
old_action = np.copy(action)
action[0] = _clip(action[0], lo=-1.0, hi=+1.0)
action[1] = _clip(action[1], lo=-1.0, hi=+1.0)
action[1] = (action[1] + 1.0) / 2.0
action[2] = _clip(action[2])
obs, reward, done, _ = super(VAERacingWorld, self)._step(action)
result = np.copy(_process_frame(obs)).astype(np.float) / 255.0
result = result.reshape(1, 64, 64, 3)
self.real_frame = result
#z = self.vae.encode(result).flatten()
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar / 2.0) * np.random.randn(*s)
if self.full_episode:
if MU_MODE:
return mu, reward, False, {}
else:
return z, reward, False, {}
self._internal_counter += 1
if self._internal_counter > TIME_LIMIT:
done = True
if MU_MODE:
z = mu
self.world_model.predict_next_obs(z, old_action)
if self.pure_world_mode:
z = np.copy(self.world_model.hidden_state)
else:
z = np.concatenate([z, self.world_model.hidden_state], axis=0)
return z, reward, done, {}
class Model:
''' simple one layer model for car racing '''
def __init__(self, load_model=True):
# For Mac
# self.env_name = "/Users/intuinno/codegit/pushBlock/app/mac/VisualPushBlockContinuous"
# For linux
self.env_name = "/home/intuinno/codegit/pushblock/app/linux/pushblock.x86_64"
self.vae = ConvVAE(batch_size=1, gpu_mode=False, is_training=False, reuse=True)
self.rnn = MDNRNN(hps_sample, gpu_mode=False, reuse=True)
if load_model:
self.vae.load_json('vae/vae.json')
self.rnn.load_json('rnn/rnn.json')
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
self.input_size = rnn_output_size(EXP_MODE)
self.z_size = 32
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size, self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(self.hidden_size, 3)
self.bias_output = np.random.randn(3)
self.param_count = ((self.input_size+1)*self.hidden_size) + (self.hidden_size*3+3)
else:
self.weight = np.random.randn(self.input_size, 3)
self.bias = np.random.randn(3)
self.param_count = (self.input_size)*3+3
self.render_mode = False
def make_env(self, seed=-1, render_mode=False, full_episode=False, workerid=1):
self.render_mode = render_mode
self.env = make_env(self.env_name, seed=seed, render_mode=render_mode, full_episode=full_episode, workerid=workerid)
def reset(self):
self.state = rnn_init_state(self.rnn)
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float)/255.0
result = result.reshape(1, 64, 64, 3)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar/2.0) * np.random.randn(*s)
return z, mu, logvar
def get_action(self, z):
h = rnn_output(self.state, z, EXP_MODE)
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
h = np.tanh(np.dot(h, self.weight_hidden) + self.bias_hidden)
action = np.tanh(np.dot(h, self.weight_output) + self.bias_output)
else:
action = np.tanh(np.dot(h, self.weight) + self.bias)
self.state = rnn_next_state(self.rnn, z, action, self.state)
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size+1)*self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(self.input_size, self.hidden_size)
self.bias_output = params_2[:3]
self.weight_output = params_2[3:].reshape(self.hidden_size, 3)
else:
self.bias = np.array(model_params[:3])
self.weight = np.array(model_params[3:]).reshape(self.input_size, 3)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
#return np.random.randn(self.param_count)*stdev
return np.random.standard_cauchy(self.param_count)*stdev # spice things up
def init_random_model_params(self, stdev=0.1):
params = self.get_random_model_params(stdev=stdev)
self.set_model_params(params)
vae_params = self.vae.get_random_model_params(stdev=stdev)
self.vae.set_model_params(vae_params)
rnn_params = self.rnn.get_random_model_params(stdev=stdev)
self.rnn.set_model_params(rnn_params)
class Model:
''' simple one layer model for car racing '''
def __init__(self, load_model=True):
self.vae = ConvVAE(batch_size=1,
gpu_mode=False,
is_training=False,
reuse=True)
self.rnn = MDNRNN(hps_sample, gpu_mode=False, reuse=True)
if load_model:
self.vae.load_json('vae/vae.json')
self.rnn.load_json('rnn/rnn.json')
self.state = rnn_init_state(self.rnn)
self.rnn_mode = True
self.input_size = rnn_output_size(EXP_MODE)
self.z_size = 32
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
self.hidden_size = 40
self.weight_hidden = np.random.randn(self.input_size,
self.hidden_size)
self.bias_hidden = np.random.randn(self.hidden_size)
self.weight_output = np.random.randn(self.hidden_size, 2)
self.bias_output = np.random.randn(3)
self.param_count = ((self.input_size + 1) *
self.hidden_size) + (self.hidden_size * 2 + 2)
else:
self.weight = np.random.randn(self.input_size, 2)
self.bias = np.random.randn(2)
self.param_count = (self.input_size) * 2 + 2
def reset(self):
self.state = rnn_init_state(self.rnn)
def encode_obs(self, obs):
# convert raw obs to z, mu, logvar
result = np.copy(obs).astype(np.float) / 255.0
result = result.reshape(1, 64, 64, 3)
mu, logvar = self.vae.encode_mu_logvar(result)
mu = mu[0]
logvar = logvar[0]
s = logvar.shape
z = mu + np.exp(logvar / 2.0) * np.random.randn(*s)
return z, mu, logvar
def get_action(self, z):
h = rnn_output(self.state, z, EXP_MODE)
'''
action = np.dot(h, self.weight) + self.bias
action[0] = np.tanh(action[0])
action[1] = sigmoid(action[1])
action[2] = clip(np.tanh(action[2]))
'''
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
h = np.tanh(np.dot(h, self.weight_hidden) + self.bias_hidden)
action = np.tanh(np.dot(h, self.weight_output) + self.bias_output)
else:
action = np.tanh(np.dot(h, self.weight) + self.bias)
action[0] = clip(action[0])
action[1] = clip(action[1])
self.state = rnn_next_state(self.rnn, z, action, self.state)
if np.random.uniform(0, 1) < 0.2:
action = [np.random.uniform(-2, 2), np.random.uniform(-2, 2)]
return action
def set_model_params(self, model_params):
if EXP_MODE == MODE_Z_HIDDEN: # one hidden layer
params = np.array(model_params)
cut_off = (self.input_size + 1) * self.hidden_size
params_1 = params[:cut_off]
params_2 = params[cut_off:]
self.bias_hidden = params_1[:self.hidden_size]
self.weight_hidden = params_1[self.hidden_size:].reshape(
self.input_size, self.hidden_size)
self.bias_output = params_2[:2]
self.weight_output = params_2[2:].reshape(self.hidden_size, 2)
else:
self.bias = np.array(model_params[:2])
self.weight = np.array(model_params[2:]).reshape(
self.input_size, 2)
def load_model(self, filename):
with open(filename) as f:
data = json.load(f)
print('loading file %s' % (filename))
self.data = data
model_params = np.array(data[0]) # assuming other stuff is in data
self.set_model_params(model_params)
def get_random_model_params(self, stdev=0.1):
#return np.random.randn(self.param_count)*stdev
return np.random.standard_cauchy(
self.param_count) * stdev # spice things up
def init_random_model_params(self, stdev=0.1):
params = self.get_random_model_params(stdev=stdev)
self.set_model_params(params)
vae_params = self.vae.get_random_model_params(stdev=stdev)
self.vae.set_model_params(vae_params)
rnn_params = self.rnn.get_random_model_params(stdev=stdev)
self.rnn.set_model_params(rnn_params)
class Model:
def __init__(self,load_model=True):
self.env_name="carracing"
self.vae=ConvVAE(batch_size=1,gpu_mode=False,is_training=False,reuse=True)
self.rnn=MDNRNN(hps_sample,gpu_mode=False,reuse=True)
if load_model:
self.vae.load_json('vae/vae.json')
self.rnn.load_json('rnn/rnn.json')
self.state=rnn_init_state(self.rnn)
self.rnn_mode=True
self.input_size=rnn_output_size(EXP_MODE)
self.z_size=32
if EXP_MODE==MODE_Z_HIDDEN:
self.hidden_size=40
self.weight_hidden=np.random.randn(self.input_size,self.hidden_size)
self.bias_hidden=np.random.randn(self.hidden_size)
self.weight_output=np.random.randn(self.hidden_size,3)
self.bias_output=np.random.randn(3)
self.param_count=((self.input_size+1)*self.hidden_size)+(self.hidden_size*3+3)
else:
self.weight=np.random.randn(self.input_size,3)
self.bias=np.random.randn(3)
self.param_count=(self.input_size)*3+3
self.render_mode=False
def make_env(self,seed=-1,render_mode=False,full_episode=False):
self.render_mode=render_mode
self.env=make_env(self.env_name,seed=seed,render_mode=render_mode,full_episode=full_episode)
def reset(self):
self.state=rnn_init_state(self.rnn)
def encode_obs(self,obs):
result=np.copy(obs).astype(np.float)/255.0
result=result.reshape(1,64,64,3)
mu,logvar=self.vae.encode_mu_logvar(result)
mu=mu[0]
logvar=logvar[0]
s=logvar.shape
z=mu+np.exp(logvar/2.0)*np.random.randn(*s)
return z,mu,logvar
def get_action(self,z):
h=rnn_output(self.state,z,EXP_MODE)
if EXP_MODE==MODE_Z_HIDDEN:
h=np.tanh(np.dot(h,self.weight_hidden)+self.bias_hidden)
action=np.tanh(np.dot(h,self.weight_output)+self.bias_output)
else:
action=np.tanh(np.dot(h,self.weight)+self.bias)
action[1]=(action[1]+1.0)/2.0
action[2]=clip(action[2])
self.state=rnn_next_state(self.rnn,z,action,self.state)
return action
def set_model_params(self,model_params):
if EXP_MODE==MODE_Z_HIDDEN:
params=np.array(model_params)
cut_off=(self.input_size+1)*self.hidden_size
params_1=params[:cut_off]
params_2=params[cut_off:]
self.bias_hidden=params_1[:self.hidden_size]
self.weight_hidden=params_1[self.hidden_size:].reshape(self.input_size,self.hidden_size)
self.bias_output=params_2[:3]
self.weight_output=params_2[3:].reshape(self.hidden_size,3)
else:
self.bias=np.array(model_params[:3])
self.weight=np.array(model_params[3:]).reshape(self.input_size,3)
def load_model(self,filename):
with open(filename)as f:
data=json.load(f)
print('loading file %s'%(filename))
self.data=data
model_params=np.array(data[0])
self.set_model_params(model_params)
def get_random_model_params(self,stdev=0.1):
return np.random.standard_cauchy(self.param_count)*stdev
def init_random_model_params(self,stdev=0.1):
params=self.get_random_model_params(stdev=stdev)
self.set_model_params(params)
vae_params=self.vae.get_random_model_params(stdev=stdev)
self.vae.set_model_params(vae_params)
rnn_params=self.rnn.get_random_model_params(stdev=stdev)
self.rnn.set_model_params(rnn_params)