Tensorflow tips

.https://www.tensorflow.org/api_docs/python/tf/feature_column

Batch and shuffle the data

BUFFER_SIZE = 60000
BATCH_SIZE = 256

train_dataset = tf.data.Dataset.from_tensor_slices(train_images).shuffle(BUFFER_SIZE).batch(BATCH_SIZE)

Shuffle

# Shuffle the examples
train_df = train_df.reindex(np.random.permutation(train_df.index))

Create bucket feature column

# Create a bucket feature column for latitude.
latitude_as_a_numeric_column = tf.feature_column.numeric_column("latitude")
latitude_boundaries = list(np.arange(int(min(train_df['latitude'])), 
                                     int(max(train_df['latitude'])), 
                                     resolution_in_degrees))
latitude = tf.feature_column.bucketized_column(latitude_as_a_numeric_column, 
                                               latitude_boundaries)
feature_columns.append(latitude)