我正在google colab中使用CNN训练MNIST数据集,并希望使用pickle保存模型,当我尝试保存模型时,出现错误无法pickle\u thread.RLock objects
import pickle
import numpy as np
import tensorflow as tf
import matplotlib.pyplot as plt
import keras
from keras.datasets import mnist
from keras.utils import to_categorical
from keras.models import Sequential
from keras.layers import Conv2D , MaxPooling2D, Dense, Flatten,Dropout
from keras.optimizers import Adam
from keras.preprocessing.image import ImageDataGenerator
from sklearn.model_selection import train_test_split
testRatio = 0.2
valRatio = 0.2
imageDimensions = (28,28,3)
batchSizeVal = 50
EPOCHS = 2
stepsPerEpoch = 2000
(X_train, y_train), (X_test, y_test) = mnist.load_data()
X_train, X_validation , y_train , y_validation = train_test_split(X_train, y_train, test_size= valRatio)
X_train = X_train.reshape((48000, 28, 28, 1))
X_test = X_test.reshape((10000, 28, 28, 1))
X_validation = X_validation.reshape((12000, 28, 28, 1))
dataGen = ImageDataGenerator(width_shift_range = 0.1,
height_shift_range = 0.1,
zoom_range = 0.2,
shear_range = 0.1,
rotation_range= 10)
dataGen.fit(X_train)
y_train = to_categorical(y_train,10)
y_test= to_categorical(y_test,10)
y_validation = to_categorical(y_validation,10)
def myModel():
noOfFiters = 60
sizeOfFilter1 = (5,5)
sizeOfFilter2 = (3,3)
sizeOfPool = (2,2)
noOfNode = 500
model = Sequential()
model.add((Conv2D(noOfFiters, sizeOfFilter1,input_shape=(imageDimensions[0]
,imageDimensions[1],
1),
activation = "relu")))
model.add((Conv2D(noOfFiters, sizeOfFilter1, activation = "relu")))
model.add(MaxPooling2D(pool_size=sizeOfPool))
model.add((Conv2D(noOfFiters//2, sizeOfFilter2, activation = "relu")))
model.add((Conv2D(noOfFiters//2, sizeOfFilter2, activation = "relu")))
model.add(MaxPooling2D(pool_size=sizeOfPool))
model.add(Dropout(0.5))
model.add(Flatten())
model.add(Dense(noOfNode,activation='relu'))
model.add(Dropout(0.5))
model.add(Dense(10,activation='softmax'))
model.compile(Adam(lr=0.001),loss='categorical_crossentropy',
metrics=['accuracy'])
return model
model = myModel()
history = model.fit(dataGen.flow(X_train, y_train,
batch_size= batchSizeVal),
steps_per_epoch = stepsPerEpoch,
epochs =EPOCHS,
validation_data = (X_validation,y_validation),
shuffle= True)
plt.figure(1)
plt.plot(history.history['loss'])
plt.plot(history.history['val_loss'])
plt.legend(['training ', 'validation'])
plt.title("Loss")
plt.xlabel('epoch')
plt.figure(2)
plt.plot(history.history['accuracy'])
plt.plot(history.history['val_accuracy'])
plt.legend(['training ', 'validation'])
plt.title("Accuracy")
plt.xlabel('epoch')
plt.show()
score = model.evaluate(X_test,y_test,verbose=0)
print("Test Score = ",score[0])
print("Test Accuracy = ",score[1])
pickle_out = open("model_trained.pickle","wb" )
model = pickle.dump(model,pickle_out)
pickle_out.close()
我该怎么做才能让它工作呢。 我试图将运行时更改为cpu,因为我认为这是gpu造成的,但即使如此,它也无法工作
Keras不支持Pickle序列化其对象(模型)。基本上,如果一个对象有
__getstate__
和__setstate__
方法,pickle will use them来序列化该对象。问题是Keras模型doesn't implement these@Zach Moshe,提出了解决此问题的修补程序。有关更多详细信息,请参阅his blog
请参考下面的工作代码
输出:
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