TypeError：添加的层必须是类Layer的实例。在构建 keras 分类器时

Question

我正在尝试使用 keras 构建二元分类模型，对图像进行分类。 我试图建立一个模型，但我遇到了问题。我写了这段代码：

from tensorflow.keras.models import Sequential
from keras.preprocessing.image import ImageDataGenerator
from keras.layers import Conv2D
from keras.layers import MaxPooling2D
from keras.layers import Flatten
from keras.layers import Dense

model = Sequential()
model.add(Conv2D(32,3,3, input_shape = (64,64,3), activation = 'relu'))
model.add(MaxPooling2D(pool_size=(2,2)))
model.add(Flatten)
model.add(Dense(output_dim = 128, activation= 'relu'))
model.add(Dense(output_dim = 1, activatiocn = 'sigmoid'))
model.compile(optimizer='adam', loss= 'binary_crossentropy', metrics= ['accuracy'])

我遇到了这个错误：

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
~\AppData\Local\Temp\ipykernel_22380\391641818.py in <module>
      2 model.add(Conv2D(32,3,3, input_shape = (64,64,3), activation = 'relu'))
      3 model.add(MaxPooling2D(pool_size=(2,2)))
----> 4 model.add(Flatten)
      5 model.add(Dense(output_dim = 128, activation= 'relu'))
      6 model.add(Dense(output_dim = 1, activatiocn = 'sigmoid'))

c:\Users\vbuck\anaconda3\envs\py37\lib\site-packages\tensorflow\python\training\tracking\base.py in _method_wrapper(self, *args, **kwargs)
    455     self._self_setattr_tracking = False  # pylint: disable=protected-access
    456     try:
--> 457       result = method(self, *args, **kwargs)
    458     finally:
    459       self._self_setattr_tracking = previous_value  # pylint: disable=protected-access

c:\Users\vbuck\anaconda3\envs\py37\lib\site-packages\tensorflow\python\keras\engine\sequential.py in add(self, layer)
    180       raise TypeError('The added layer must be '
    181                       'an instance of class Layer. '
--> 182                       'Found: ' + str(layer))
    183 
    184     tf_utils.assert_no_legacy_layers([layer])

TypeError: The added layer must be an instance of class Layer. Found: <class 'tensorflow.python.keras.layers.core.Flatten'>

请告诉我我的代码有什么问题？

Answer 1

Flatten 中缺少括号：

model.add（展平（））