问题描述
ValueError Traceback (most recent call last)
<ipython-input-41-42c80ec471c2> in <module>()
1 # Todo - Select the parameters for the Agent and the Optimizer
2 dqn = DQNAgent(model=model,nb_actions=nb_actions,----> 3 memory=memory)
4 dqn.compile(Adam(lr=.00025),metrics=['mae'])
/usr/local/lib/python3.7/dist-packages/rl/agents/dqn.py in __init__(self,model,policy,test_policy,enable_double_dqn,enable_dueling_network,dueling_type,*args,**kwargs)
ValueError: Model output "Tensor("activation_14/activation_14/Identity:0",shape=(?,6),dtype=float32)" has invalid shape. DQN expects a model that has one dimension for each action,in this case 6.
我在 keras-rl 和 tensorflow 中的版本有一些问题,所以这些是我正在使用的版本:
张量流==1.13.1
Keras==2.2.4
keras-rl2==1.0.4
代码如下:
from __future__ import division
from PIL import Image
import numpy as np
import gym
from tensorflow.keras.models import Sequential
from tensorflow.keras.layers import Dense,Activation,Flatten,Convolution2D,Permute
from tensorflow.keras.optimizers import Adam
import tensorflow.keras.backend as K
from rl.agents.dqn import DQNAgent
from rl.policy import LinearannealedPolicy,BoltzmannQPolicy,epsgreedyQPolicy
from rl.memory import SequentialMemory
from rl.core import Processor
from rl.callbacks import FileLogger,ModelIntervalCheckpoint
INPUT_SHAPE = (84,84)
WINDOW_LENGTH = 4
env_name = 'SpaceInvaders-v0'
env = gym.make(env_name)
nb_actions = env.action_space.n
input_shape = (WINDOW_LENGTH,) + INPUT_SHAPE
model = Sequential()
model.add(Permute((2,3,1),input_shape=input_shape))
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))
model.add(Activation('relu'))
model.add(Dense(nb_actions))
model.add(Activation('linear'))
print(model.summary())
memory = SequentialMemory(limit=1000000,window_length=WINDOW_LENGTH)
dqn = DQNAgent(model=model,memory=memory)
我正在使用 tensorflow==1.13,因为 _keras_shape
中的某些 DQNAgent
也存在以下问题:
'Tensor' object has no attribute '_keras_shape'
有人能告诉我我做错了什么吗?
解决方法
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