def main(store_path: str, model_dir: str, features_store_path: str,
batch_size: int, save_activations: bool):
""" Evaluate model using prepared features. """
deepspeech = load(model_dir)
generator = deepspeech.create_generator(features_store_path,
source='from_prepared_features',
batch_size=batch_size)
units = calculate_units(deepspeech.model)
logger.info(f'Model contains: {units//1e6:.0f}M units ({units})')
metrics = evaluate(deepspeech, generator, save_activations, store_path)
logger.info(f'Mean CER: {metrics.cer.mean():.4f}')
logger.info(f'Mean WER: {metrics.wer.mean():.4f}')
def main(store_path: str, model_dir: str, features_store_path: str, batch_size: int, save_activations: bool,
mask: bool, mask_F: int, mask_mf: int, mask_T: int, mask_mt: int, mask_ratio_t: float):
""" Evaluate model using prepared features. """
deepspeech = load(model_dir)
generator = DataGenerator.from_prepared_features(
features_store_path,
alphabet=deepspeech.alphabet,
features_extractor=deepspeech.features_extractor,
batch_size=batch_size,
mask=mask,
mask_params=dict(F=mask_F, mf=mask_mf, T=mask_T,
mt=mask_mt, ratio_t=mask_ratio_t)
)
units = calculate_units(deepspeech.model)
logger.info(f'Model contains: {units//1e6:.0f}M units ({units})')
metrics = evaluate(deepspeech, generator, save_activations, store_path)
logger.info(f'Mean CER: {metrics.cer.mean():.4f}')
logger.info(f'Mean WER: {metrics.wer.mean():.4f}')
def test_utils_load():
deepspeech = load('tests/models/test') # Or call via: model name
assert isinstance(deepspeech,
DeepSpeech) # (but has to be in the models directory)
from matplotlib import pyplot as plt
from source import utils
plt.rc('text', usetex=True)
plt.rc('font', family='serif')
# Set up data
evaluation_regular, *_ = utils.load('../out/regular/results.bin')
evaluation_robust_1, *_ = utils.load('../out/robust/results.0.1.bin')
evaluation_robust_2, *_ = utils.load('../out/robust/results.0.2.bin')
evaluation_robust_3, *_ = utils.load('../out/robust/results.0.3.bin')
evaluations = [
evaluation_regular, evaluation_robust_1, evaluation_robust_2,
evaluation_robust_3
]
no_ticks = {'xticks': [], 'yticks': []}
fig, axes = plt.subplots(4, 4, figsize=[3, 3], subplot_kw=no_ticks)
# Plot misclassified samples from the regular model
for ax_row, evaluation in zip(axes, evaluations):
epsilon, accuracy, top_misclassified_images, misclassified_logits = evaluation[
0]
for i, ax in enumerate(ax_row):
try:
image, logit, adversarial_image = top_misclassified_images[i]
ax.imshow(1 - adversarial_image[..., 0], cmap='gray')
except IndexError:
ax.axis('off')
axes[0, 0].text(-10, 14, 'Regular', size=8, ha="right", va="center")
axes[1, 0].text(-10, 14, r'$\epsilon=0.1$', size=8, ha="right", va="center")
def deepspeech() -> DeepSpeech:
return load('tests/models/test')
def prepare(name):
evaluation_robust, *_ = utils.load(name)
data = [(epsilon, misclassified_logits)
for epsilon, *_, misclassified_logits in evaluation_robust[5::5]]
return data