The following code from section 4 of the openCV tutorial produces a sequential model instead of functional model as mentioned in the video, why is this?
Also the following code produces the error as follows:
#train the model
from tensorflow.keras.callbacks import LearningRateScheduler
callbacks_list = [LearningRateScheduler(canaro.lr_schedule)]
training = model.fit(train_gen,
steps_per_epoch=len(x_train)//BATCH_SIZE,
epochs=EPOCHS,
validation_data=(x_val,y_val),
validation_steps=len(y_val)//BATCH_SIZE,
callbacks = callbacks_list)
produces the following error, I can only see that more parameters are needed in the call to model.fit() or that the error says data cardinality is ambiguous and the tutorial needs to be updated to make sure all arrays contain the same number of samples. How do we do this?
ValueError Traceback (most recent call last)
in
7 validation_data=(x_val,y_val),
8 validation_steps=len(y_val)//BATCH_SIZE,
----> 9 callbacks = callbacks_list)
/opt/conda/lib/python3.7/site-packages/tensorflow/python/keras/engine/training.py in fit(self, x, y, batch_size, epochs, verbose, callbacks, validation_split, validation_data, shuffle, class_weight, sample_weight, initial_epoch, steps_per_epoch, validation_steps, validation_batch_size, validation_freq, max_queue_size, workers, use_multiprocessing)
1128 use_multiprocessing=use_multiprocessing,
1129 model=self,
-> 1130 steps_per_execution=self._steps_per_execution)
1131 val_logs = self.evaluate(
1132 x=val_x,
/opt/conda/lib/python3.7/site-packages/tensorflow/python/keras/engine/data_adapter.py in init(self, x, y, sample_weight, batch_size, steps_per_epoch, initial_epoch, epochs, shuffle, class_weight, max_queue_size, workers, use_multiprocessing, model, steps_per_execution)
1110 use_multiprocessing=use_multiprocessing,
1111 distribution_strategy=ds_context.get_strategy(),
-> 1112 model=model)
1113
1114 strategy = ds_context.get_strategy()
/opt/conda/lib/python3.7/site-packages/tensorflow/python/keras/engine/data_adapter.py in init(self, x, y, sample_weights, sample_weight_modes, batch_size, epochs, steps, shuffle, **kwargs)
272
273 num_samples = set(int(i.shape[0]) for i in nest.flatten(inputs)).pop()
--> 274 _check_data_cardinality(inputs)
275
276 # If batch_size is not passed but steps is, calculate from the input data.
/opt/conda/lib/python3.7/site-packages/tensorflow/python/keras/engine/data_adapter.py in _check_data_cardinality(data)
1527 label, ", ".join(str(i.shape[0]) for i in nest.flatten(single_data)))
1528 msg += "Make sure all arrays contain the same number of samples."
-> 1529 raise ValueError(msg)
1530
1531
ValueError: Data cardinality is ambiguous:
x sizes: 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 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10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10
Make sure all arrays contain the same number of samples.