class LWLActor(BaseActor): """Actor for training the LWL network.""" def __init__(self, net, objective, loss_weight=None, num_refinement_iter=3, disable_backbone_bn=False, disable_all_bn=False): """ args: net - The network model to train objective - Loss functions loss_weight - Weights for each training loss num_refinement_iter - Number of update iterations N^{train}_{update} used to update the target model in each frame disable_backbone_bn - If True, all batch norm layers in the backbone feature extractor are disabled, i.e. set to eval mode. disable_all_bn - If True, all the batch norm layers in network are disabled, i.e. set to eval mode. """ super().__init__(net, objective) if loss_weight is None: loss_weight = {'segm': 1.0} self.loss_weight = loss_weight self.num_refinement_iter = num_refinement_iter self.disable_backbone_bn = disable_backbone_bn self.disable_all_bn = disable_all_bn def train(self, mode=True): """ Set whether the network is in train mode. args: mode (True) - Bool specifying whether in training mode. """ self.net.train(mode)
时间: 2024-02-10 11:30:01 浏览: 17
这是一个用于训练LWL网络的Actor类。在初始化时,它接收了一些参数,包括net(模型)、objective(目标函数)、loss_weight(损失权重)、num_refinement_iter(每个帧中用于更新目标模型的更新迭代次数)、disable_backbone_bn(如果为True,则禁用骨干特征提取器中的所有批归一化层,即将其设置为eval模式)和disable_all_bn(如果为True,则禁用网络中的所有批归一化层,即将其设置为eval模式)。
在该类中,train方法用于设置网络是否处于训练模式。默认情况下,该方法将网络设置为训练模式。如果将mode参数设置为False,则可以将网络设置为评估模式。
相关问题
class KYSActor(BaseActor): """ Actor for training KYS model """ def __init__(self, net, objective, loss_weight=None, dimp_jitter_fn=None): super().__init__(net, objective) self.loss_weight = loss_weight self.dimp_jitter_fn = dimp_jitter_fn # TODO set it somewhere
根据你的代码,这是一个用于训练 KYS 模型的 Actor 类。在初始化时,它接收了一些参数,包括 net(模型)、objective(目标函数)、loss_weight(损失权重)和 dimp_jitter_fn(噪声函数)。其中,loss_weight 和 dimp_jitter_fn 都是可选的参数。在该类中,TODO 代表需要在代码中其他地方设置它。
def __init__(self, sess, state_dim, learning_rate): self.sess = sess self.s_dim = state_dim self.lr_rate = learning_rate # Create the critic network self.inputs, self.out = self.create_critic_network() # Get all network parameters self.network_params = \ tf.compat.v1.get_collection(tf.compat.v1.GraphKeys.TRAINABLE_VARIABLES, scope='critic') # Set all network parameters self.input_network_params = [] for param in self.network_params: self.input_network_params.append( tf.compat.v1.placeholder(tf.float32, shape=param.get_shape())) self.set_network_params_op = [] for idx, param in enumerate(self.input_network_params): self.set_network_params_op.append(self.network_params[idx].assign(param)) # Network target目标 V(s) self.td_target = tf.compat.v1.placeholder(tf.float32, [None, 1]) # Temporal Difference, will also be weights for actor_gradients时间差异,也将是actor_gradients的权重 self.td = tf.subtract(self.td_target, self.out) # Mean square error均方误差 self.loss = tflearn.mean_square(self.td_target, self.out) # Compute critic gradient计算临界梯度 self.critic_gradients = tf.gradients(self.loss, self.network_params) # Optimization Op self.optimize = tf.compat.v1.train.RMSPropOptimizer(self.lr_rate). \ apply_gradients(zip(self.critic_gradients, self.network_params))请对这段代码每句进行注释
# 定义一个类,表示 Critic 网络
class CriticNetwork(object):
def __init__(self, sess, state_dim, learning_rate):
# 初始化 Critic 网络的一些参数
self.sess = sess
self.s_dim = state_dim
self.lr_rate = learning_rate
# 创建 Critic 网络
self.inputs, self.out = self.create_critic_network()
# 获取 Critic 网络中所有的参数
self.network_params = tf.compat.v1.get_collection(tf.compat.v1.GraphKeys.TRAINABLE_VARIABLES, scope='critic')
# 定义一个占位符,表示 Critic 网络的输入参数
self.input_network_params = []
for param in self.network_params:
self.input_network_params.append(tf.compat.v1.placeholder(tf.float32, shape=param.get_shape()))
# 定义一个操作,用于设置 Critic 网络的所有参数
self.set_network_params_op = []
for idx, param in enumerate(self.input_network_params):
self.set_network_params_op.append(self.network_params[idx].assign(param))
# 定义一个占位符,表示 Critic 网络的目标输出
self.td_target = tf.compat.v1.placeholder(tf.float32, [None, 1])
# 计算 Critic 网络的 Temporal Difference
self.td = tf.subtract(self.td_target, self.out)
# 定义 Critic 网络的损失函数,使用均方误差
self.loss = tflearn.mean_square(self.td_target, self.out)
# 计算 Critic 网络的梯度
self.critic_gradients = tf.gradients(self.loss, self.network_params)
# 定义 Critic 网络的优化器
self.optimize = tf.compat.v1.train.RMSPropOptimizer(self.lr_rate).apply_gradients(zip(self.critic_gradients, self.network_params))