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Converts CTC labels from dense to sparse.
Aliases: tf.compat.v1.keras.backend.ctc_label_dense_to_sparse
, tf.compat.v2.keras.backend.ctc_label_dense_to_sparse
tf.keras.backend.ctc_label_dense_to_sparse(
labels,
label_lengths
)
Arguments:
labels
: dense CTC labels.label_lengths
: length of the labels.
Returns:
A sparse tensor representation of the labels.