def model_v9(input_shape, nb_actions):
model = Sequential()
if common.image_dim_ordering() == 'tf':
# (width, height, channels)
model.add(Permute((2, 3, 1), input_shape=input_shape))
elif common.image_dim_ordering() == 'th':
# (channels, width, height)
model.add(Permute((1, 2, 3), input_shape=input_shape))
else:
raise RuntimeError('Unknown image_dim_ordering.')
model.add(Convolution2D(15, (4, 4), strides=(1, 1)))
model.add(Activation('relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Convolution2D(30, (3, 3), strides=(1, 1)))
model.add(Activation('relu'))
model.add(Convolution2D(60, (3, 3), strides=(1, 1)))
model.add(Activation('relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Flatten())
model.add(Dense(600))
model.add(Activation('relu'))
model.add(Dense(300))
model.add(Activation('relu'))
model.add(Dense(200))
model.add(Activation('relu'))
model.add(Dense(nb_actions))
model.add(Activation('linear'))
print(model.summary())
print(model.count_params())
return model
def deconv3d(x,
kernel,
output_shape,
strides=(1, 1, 1),
border_mode='valid',
dim_ordering='default',
image_shape=None,
filter_shape=None):
'''3D deconvolution (transposed convolution).
# Arguments
kernel: kernel tensor.
output_shape: desired dimensions of output.
strides: strides tuple.
border_mode: string, "same" or "valid".
dim_ordering: "tf" or "th".
Whether to use Theano or TensorFlow dimension ordering
in inputs/kernels/ouputs.
'''
flip_filters = False
if dim_ordering == 'default':
dim_ordering = image_dim_ordering()
if dim_ordering not in {'th', 'tf'}:
raise ValueError('Unknown dim_ordering ' + str(dim_ordering))
if dim_ordering == 'tf':
output_shape = (output_shape[0], output_shape[4], output_shape[1],
output_shape[2], output_shape[3])
x = _preprocess_conv3d_input(x, dim_ordering)
kernel = _preprocess_conv3d_kernel(kernel, dim_ordering)
kernel = kernel.dimshuffle((1, 0, 2, 3, 4))
th_border_mode = _preprocess_border_mode(border_mode)
if hasattr(kernel, '_keras_shape'):
kernel_shape = kernel._keras_shape
else:
# Will only work if `kernel` is a shared variable.
kernel_shape = kernel.eval().shape
filter_shape = _preprocess_conv3d_filter_shape(dim_ordering, filter_shape)
filter_shape = tuple(filter_shape[i] for i in (1, 0, 2, 3, 4))
conv_out = T.nnet.abstract_conv.conv3d_grad_wrt_inputs(
x,
kernel,
output_shape,
filter_shape=filter_shape,
border_mode=th_border_mode,
subsample=strides,
filter_flip=not flip_filters)
conv_out = _postprocess_conv3d_output(conv_out, x, border_mode,
kernel_shape, strides, dim_ordering)
return conv_out
def __init__(self, image_size, depth=16, k=8):
self._depth = depth
self._k = k
self._dropout_probability = 0
self._weight_decay = 0.0005
self._use_bias = False
self._weight_init = "he_normal"
if K.image_dim_ordering() == "th":
logging.debug("image_dim_ordering = 'th'")
self._channel_axis = 1
self._input_shape = (3, image_size, image_size)
else:
logging.debug("image_dim_ordering = 'tf'")
self._channel_axis = -1
self._input_shape = (image_size, image_size, 3)
def deconv3d(x,
kernel,
output_shape,
strides=(1, 1, 1),
border_mode='valid',
dim_ordering='default',
image_shape=None,
filter_shape=None):
'''3D deconvolution (i.e. transposed convolution).
# Arguments
x: input tensor.
kernel: kernel tensor.
output_shape: 1D int tensor for the output shape.
strides: strides tuple.
border_mode: string, "same" or "valid".
dim_ordering: "tf" or "th".
Whether to use Theano or TensorFlow dimension ordering
for inputs/kernels/ouputs.
# Returns
A tensor, result of transposed 3D convolution.
# Raises
ValueError: if `dim_ordering` is neither `tf` or `th`.
'''
if dim_ordering == 'default':
dim_ordering = image_dim_ordering()
if dim_ordering not in {'th', 'tf'}:
raise ValueError('Unknown dim_ordering ' + str(dim_ordering))
x = _preprocess_conv3d_input(x, dim_ordering)
output_shape = _preprocess_deconv_output_shape(x, output_shape,
dim_ordering)
kernel = _preprocess_conv3d_kernel(kernel, dim_ordering)
kernel = tf.transpose(kernel, (0, 1, 2, 4, 3))
padding = _preprocess_border_mode(border_mode)
strides = (1, ) + strides + (1, )
x = tf.nn.conv3d_transpose(x,
kernel,
output_shape,
strides,
padding=padding)
return _postprocess_conv3d_output(x, dim_ordering)
parser = argparse.ArgumentParser()
parser.add_argument('--mode', choices=['train', 'test'], default='train')
parser.add_argument('--env-name', type=str, default='BreakoutDeterministic-v4')
parser.add_argument('--weights', type=str, default=None)
args = parser.parse_args()
# Get the environment and extract the number of actions.
env = gym.make(args.env_name)
np.random.seed(123)
env.seed(123)
nb_actions = env.action_space.n
# Next, we build our model. We use the same model that was described by Mnih et al. (2015).
input_shape = (WINDOW_LENGTH, ) + INPUT_SHAPE
model = Sequential()
if common.image_dim_ordering() == 'tf':
# (width, height, channels)
model.add(Permute((2, 3, 1), input_shape=input_shape))
elif common.image_dim_ordering() == 'th':
# (channels, width, height)
model.add(Permute((1, 2, 3), input_shape=input_shape))
else:
raise RuntimeError('Unknown image_dim_ordering.')
model.add(Convolution2D(32, (8, 8), strides=(4, 4)))
model.add(Activation('relu'))
model.add(Convolution2D(64, (4, 4), strides=(2, 2)))
model.add(Activation('relu'))
model.add(Convolution2D(64, (3, 3), strides=(1, 1)))
model.add(Activation('relu'))
model.add(Flatten())
model.add(Dense(512))
