def test_get_noise_continuous_dim1_syntax(self): util.get_eval_noise_continuous_dim1( noise_samples=4, categorical_sample_points=np.arange(0, 10), continuous_sample_points=np.linspace(-2.0, 2.0, 10), unstructured_noise_dims=62, continuous_noise_dims=2)
def evaluate(hparams, run_eval_loop=True): """Runs an evaluation loop. Args: hparams: An HParams instance containing the eval hyperparameters. run_eval_loop: Whether to run the full eval loop. Set to False for testing. """ with tf.name_scope('inputs'): noise_args = (hparams.noise_samples, CAT_SAMPLE_POINTS, CONT_SAMPLE_POINTS, hparams.unstructured_noise_dims, hparams.continuous_noise_dims) # Use fixed noise vectors to illustrate the effect of each dimension. display_noise1 = util.get_eval_noise_categorical(*noise_args) display_noise2 = util.get_eval_noise_continuous_dim1(*noise_args) display_noise3 = util.get_eval_noise_continuous_dim2(*noise_args) _validate_noises([display_noise1, display_noise2, display_noise3]) # Visualize the effect of each structured noise dimension on the generated # image. def generator_fn(inputs): return networks.infogan_generator(inputs, len(CAT_SAMPLE_POINTS), is_training=False) with tf.variable_scope( 'Generator') as genscope: # Same scope as in training. categorical_images = generator_fn(display_noise1) reshaped_categorical_img = tfgan.eval.image_reshaper( categorical_images, num_cols=len(CAT_SAMPLE_POINTS)) tf.summary.image('categorical', reshaped_categorical_img, max_outputs=1) with tf.variable_scope(genscope, reuse=True): continuous1_images = generator_fn(display_noise2) reshaped_continuous1_img = tfgan.eval.image_reshaper( continuous1_images, num_cols=len(CONT_SAMPLE_POINTS)) tf.summary.image('continuous1', reshaped_continuous1_img, max_outputs=1) with tf.variable_scope(genscope, reuse=True): continuous2_images = generator_fn(display_noise3) reshaped_continuous2_img = tfgan.eval.image_reshaper( continuous2_images, num_cols=len(CONT_SAMPLE_POINTS)) tf.summary.image('continuous2', reshaped_continuous2_img, max_outputs=1) # Evaluate image quality. all_images = tf.concat( [categorical_images, continuous1_images, continuous2_images], 0) tf.summary.scalar('MNIST_Classifier_score', util.mnist_score(all_images)) # Write images to disk. image_write_ops = [] if hparams.write_to_disk: image_write_ops.append( _get_write_image_ops(hparams.eval_dir, 'categorical_infogan.png', reshaped_categorical_img[0])) image_write_ops.append( _get_write_image_ops(hparams.eval_dir, 'continuous1_infogan.png', reshaped_continuous1_img[0])) image_write_ops.append( _get_write_image_ops(hparams.eval_dir, 'continuous2_infogan.png', reshaped_continuous2_img[0])) # For unit testing, use `run_eval_loop=False`. if not run_eval_loop: return evaluation.evaluate_repeatedly( hparams.checkpoint_dir, hooks=[ evaluation.SummaryAtEndHook(hparams.eval_dir), evaluation.StopAfterNEvalsHook(1) ], eval_ops=image_write_ops, max_number_of_evaluations=hparams.max_number_of_evaluations)