如何修复"ValueError:输入0与图层展平不兼容:预期的min_ndim = 3,找到的ndim = 2"加载模型时出错 [英] How to fix ''ValueError: Input 0 is incompatible with layer flatten: expected min_ndim=3, found ndim=2" error when loading model
问题描述
我正在尝试保存和加载我的keras模型.它训练,评估并保存良好(使用.h5保存模型),但是当我尝试加载模型时,出现以下错误: ValueError:输入0与图层展平不兼容:预期的min_ndim = 3,找到的ndim = 2. 我加载模型不正确吗?任何帮助将不胜感激!
I'm trying to save and load my keras model. It trains, evaluates, and saves fine (using .h5 to save model) but when I try to load the model I get the following error: ValueError: Input 0 is incompatible with layer flatten: expected min_ndim=3, found ndim=2. Am I loading the model incorrectly? Any help would be appreciated!
这是我保存模型的代码块.
This is the code block from where I'm saving the model.
def ml(self):
model = tf.keras.models.Sequential()
model.add(tf.keras.layers.Flatten())
self.addLayer(model,145,6)
model.add(tf.keras.layers.Dense(1))
optimizer = tf.keras.optimizers.Adam()
model.compile(loss='mean_squared_error',
optimizer=optimizer,
metrics=['mean_absolute_error',
'mean_squared_error'])
model.fit(self.x_train, self.y_train,epochs=130)
lm = model.evaluate(self.x_test, self.y_test, batch_size=300)
model.save('my_model.h5')
def addLayer(self, model, numNodes, numLayers):
for i in range(numLayers):
model.add(tf.keras.layers.Dense(numNodes,activation=tf.nn.relu))
要从其他脚本加载:
import keras
from keras.models import load_model
from keras.utils import CustomObjectScope
from keras.initializers import glorot_uniform
with CustomObjectScope({'GlorotUniform': glorot_uniform()}):
model = load_model(mlPath)
在尝试加载模型时,出现以下错误:
While attempting to load the model I get the following error:
ValueError:输入0与图层展平不兼容:预期的min_ndim = 3,找到的ndim = 2
ValueError: Input 0 is incompatible with layer flatten: expected min_ndim=3, found ndim=2
推荐答案
,您可以尝试仅保存模型的权重,然后使用完全相同的代码重新创建它,并仅加载权重. 所以改变
you can try to save only the weights of your model, then re-create it using exactly the same code, and loading only the weights. so change
model.save
到
model.save_weights('my_model.h5')
然后,当您要加载模型时,首先,重新创建模型:
Then when you want to load your model, first, you re-create your model:
model = tf.keras.models.Sequential()
model.add(tf.keras.layers.Flatten())
self.addLayer(model,145,6)
model.add(tf.keras.layers.Dense(1))
最后加载权重:
model.load_weights('my_model.h5')
这对我有用. 另外,您可以在模型中添加一个Input层以及显式的input_shape.
This worked for me. Also, you could add an Input layer, together with the explicit input_shape in your model.
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