NotImplementedError:尚未为未构建的Model子类启用`fit_generator` [英] NotImplementedError: `fit_generator` is not yet enabled for unbuilt Model subclasses
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问题描述
我正在使用以下代码:
import tensorflow as tf
##############################################################
traindata = tf.keras.preprocessing.image.ImageDataGenerator(
rescale=1. / 255,
shear_range=0.2,
zoom_range=0.2,
horizontal_flip=True)
input = traindata.flow_from_directory('VS/train')
modelo = tf.keras.Sequential()
modelo.add(tf.keras.layers.Conv2D(32, (3, 3),
activation=tf.keras.activations.relu))
modelo.add(tf.keras.layers.Flatten())
modelo.add(tf.keras.layers.Dense(64, activation=tf.keras.activations.relu))
modelo.add(tf.keras.layers.Dense(2, activation=tf.keras.activations.relu))
modelo.compile(loss='categorical_crossentropy', optimizer='rmsprop')
modelo.fit_generator(input, epochs=1)
但是,我遇到此错误:
因此,通过运行下面的代码,我会收到此错误
So by running the code below I get this error
NotImplementedError: `fit_generator` is not yet enabled for unbuilt Model subclasses
有人可以告诉我怎么了吗?
Can someone tell me what's wrong?
推荐答案
您没有在第一层中指定input_shape
,因此该模型未完全定义. fit_generator
尚未实现此过程,因此您应该使用初始input_shape
完全定义模型.
You didn't specify the input_shape
in the first layer, so the model is not fully defined. This process has not been implemented with fit_generator
, so you should fully define the model with the initial input_shape
.
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