tf.keras.callbacks.TensorBoard

Enable visualizations for TensorBoard.

Inherits From: Callback

tf.keras.callbacks.TensorBoard(
    log_dir='logs',
    histogram_freq=0,
    write_graph=True,
    write_images=False,
    write_steps_per_second=False,
    update_freq='epoch',
    profile_batch=0,
    embeddings_freq=0,
    embeddings_metadata=None,
    **kwargs
)

TensorBoard is a visualization tool provided with TensorFlow.

This callback logs events for TensorBoard, including:

Metrics summary plots
Training graph visualization
Weight histograms
Sampled profiling

When used in Model.evaluate, in addition to epoch summaries, there will be a summary that records evaluation metrics vs Model.optimizer.iterations written. The metric names will be prepended with evaluation, with Model.optimizer.iterations being the step in the visualized TensorBoard.

If you have installed TensorFlow with pip, you should be able to launch TensorBoard from the command line:

tensorboard --logdir=path_to_your_logs

You can find more information about TensorBoard here.

Args
`log_dir`	the path of the directory where to save the log files to be parsed by TensorBoard. e.g. log_dir = os.path.join(working_dir, 'logs') This directory should not be reused by any other callbacks.
`histogram_freq`	frequency (in epochs) at which to compute weight histograms for the layers of the model. If set to 0, histograms won't be computed. Validation data (or split) must be specified for histogram visualizations.
`write_graph`	whether to visualize the graph in TensorBoard. The log file can become quite large when write_graph is set to True.
`write_images`	whether to write model weights to visualize as image in TensorBoard.
`write_steps_per_second`	whether to log the training steps per second into Tensorboard. This supports both epoch and batch frequency logging.
`update_freq`	disabled Warning: Batch-level summary writing using `update_freq` is currently unsupported. A suggested workaround is shown in the TensorBoard Scalars tutorial.
`profile_batch`	Profile the batch(es) to sample compute characteristics. profile_batch must be a non-negative integer or a tuple of integers. A pair of positive integers signify a range of batches to profile. By default, profiling is disabled.
`embeddings_freq`	frequency (in epochs) at which embedding layers will be visualized. If set to 0, embeddings won't be visualized.
`embeddings_metadata`	Dictionary which maps embedding layer names to the filename of a file in which to save metadata for the embedding layer. In case the same metadata file is to be used for all embedding layers, a single filename can be passed.

Examples:

Basic usage:

tensorboard_callback = tf.keras.callbacks.TensorBoard(log_dir="./logs")
model.fit(x_train, y_train, epochs=2, callbacks=[tensorboard_callback])
# Then run the tensorboard command to view the visualizations.

Profiling:

# Profile a single batch, e.g. the 5th batch.
tensorboard_callback = tf.keras.callbacks.TensorBoard(
    log_dir='./logs', profile_batch=5)
model.fit(x_train, y_train, epochs=2, callbacks=[tensorboard_callback])

# Profile a range of batches, e.g. from 10 to 20.
tensorboard_callback = tf.keras.callbacks.TensorBoard(
    log_dir='./logs', profile_batch=(10,20))
model.fit(x_train, y_train, epochs=2, callbacks=[tensorboard_callback])

Methods

`set_model`

View source

set_model(
    model
)

Sets Keras model and writes graph if specified.

`set_params`