[python] How to load a model from an HDF5 file in Keras?

load_weights only sets the weights of your network. You still need to define its architecture before calling load_weights:

def create_model():
   model = Sequential()
   model.add(Dense(64, input_dim=14, init='uniform'))
   model.add(LeakyReLU(alpha=0.3))
   model.add(BatchNormalization(epsilon=1e-06, mode=0, momentum=0.9, weights=None))
   model.add(Dropout(0.5)) 
   model.add(Dense(64, init='uniform'))
   model.add(LeakyReLU(alpha=0.3))
   model.add(BatchNormalization(epsilon=1e-06, mode=0, momentum=0.9, weights=None))
   model.add(Dropout(0.5))
   model.add(Dense(2, init='uniform'))
   model.add(Activation('softmax'))
   return model

def train():
   model = create_model()
   sgd = SGD(lr=0.1, decay=1e-6, momentum=0.9, nesterov=True)
   model.compile(loss='binary_crossentropy', optimizer=sgd)

   checkpointer = ModelCheckpoint(filepath="/tmp/weights.hdf5", verbose=1, save_best_only=True)
   model.fit(X_train, y_train, nb_epoch=20, batch_size=16, show_accuracy=True, validation_split=0.2, verbose=2, callbacks=[checkpointer])

def load_trained_model(weights_path):
   model = create_model()
   model.load_weights(weights_path)

Examples related to python

programming a servo thru a barometer Is there a way to view two blocks of code from the same file simultaneously in Sublime Text? python variable NameError Why my regexp for hyphenated words doesn't work? Comparing a variable with a string python not working when redirecting from bash script is it possible to add colors to python output? Get Public URL for File - Google Cloud Storage - App Engine (Python) Real time face detection OpenCV, Python xlrd.biffh.XLRDError: Excel xlsx file; not supported Could not load dynamic library 'cudart64_101.dll' on tensorflow CPU-only installation

Examples related to machine-learning

Error in Python script "Expected 2D array, got 1D array instead:"? How to predict input image using trained model in Keras? What is the role of "Flatten" in Keras? How to concatenate two layers in keras? How to save final model using keras? scikit-learn random state in splitting dataset Why binary_crossentropy and categorical_crossentropy give different performances for the same problem? What is the meaning of the word logits in TensorFlow? Can anyone explain me StandardScaler? Can Keras with Tensorflow backend be forced to use CPU or GPU at will?

Examples related to keras

Could not load dynamic library 'cudart64_101.dll' on tensorflow CPU-only installation How to fix 'Object arrays cannot be loaded when allow_pickle=False' for imdb.load_data() function? Tensorflow 2.0 - AttributeError: module 'tensorflow' has no attribute 'Session' What is the use of verbose in Keras while validating the model? Save and load weights in keras How to import keras from tf.keras in Tensorflow? How to check which version of Keras is installed? Can I run Keras model on gpu? How to check if keras tensorflow backend is GPU or CPU version? Keras input explanation: input_shape, units, batch_size, dim, etc

Examples related to data-science

Unable to allocate array with shape and data type 'Conda' is not recognized as internal or external command ValueError: Wrong number of items passed - Meaning and suggestions? How to load a model from an HDF5 file in Keras? Where do I call the BatchNormalization function in Keras?