def test_image_feature_generates_correct_ouput(self):
attribution = torch.zeros(1, 3, 4, 4)
data = torch.ones(1, 3, 4, 4)
contribution = 1.0
name = "photo"
orig_fig = Figure(figsize=(4, 4))
attr_fig = Figure(figsize=(4, 4))
def mock_viz_attr(*args, **kwargs):
if kwargs["method"] == "original_image":
return orig_fig, None
else:
return attr_fig, None
feature = ImageFeature(
name=name,
baseline_transforms=None,
input_transforms=None,
visualization_transform=None,
)
with patch(
"captum.attr._utils.visualization.visualize_image_attr", mock_viz_attr
):
feature_output = feature.visualize(attribution, data, contribution)
expected_feature_output = FeatureOutput(
name=name,
base=_convert_figure_base64(orig_fig),
modified=_convert_figure_base64(attr_fig),
type="image",
contribution=contribution,
)
self.assertEqual(expected_feature_output, feature_output)
def test_general_feature_generates_correct_output(self):
name = "general_feature"
categories = ["cat1", "cat2", "cat3", "cat4"]
attribution = torch.Tensor(1, 4)
attribution.fill_(0.5)
data = torch.rand(1, 4)
contribution = torch.rand(1).item()
attr_squeezed = attribution.squeeze(0)
expected_modified = [
x * 100 for x in (attr_squeezed / attr_squeezed.norm()).tolist()
]
expected_base = [
f"{c}: {d:.2f}" for c, d in zip(categories, data.squeeze().tolist())
]
feature = GeneralFeature(name, categories)
feature_output = feature.visualize(
attribution=attribution, data=data, contribution_frac=contribution
)
expected_feature_output = FeatureOutput(
name=name,
base=expected_base,
modified=expected_modified,
type="general",
contribution=contribution,
)
self.assertEqual(expected_feature_output, feature_output)
def test_text_feature_generates_correct_visualization_output(self):
attribution = torch.tensor([0.1, 0.2, 0.3, 0.4])
input_data = torch.rand(1, 2)
expected_modified = [
100 * x for x in (attribution / attribution.max())
]
contribution_frac = torch.rand(1).item()
feature = TextFeature(
name=self.FEATURE_NAME,
baseline_transforms=None,
input_transforms=None,
visualization_transform=None,
)
feature_output = feature.visualize(attribution, input_data,
contribution_frac)
expected_feature_output = FeatureOutput(
name=self.FEATURE_NAME,
base=input_data,
modified=expected_modified,
type="text",
contribution=contribution_frac,
)
self.assertEqual(expected_feature_output, feature_output)
def visualize(self, attribution, data, contribution_frac) -> FeatureOutput:
return FeatureOutput(
name=self.name,
base=data,
modified=data,
type=self.visualization_type(),
contribution=contribution_frac,
)
def test_empty_feature_should_generate_fixed_output(self):
feature = EmptyFeature()
contribution = torch.rand(1).item()
expected_output = FeatureOutput(
name="empty",
base=None,
modified=None,
type="empty",
contribution=contribution,
)
self.assertEqual(expected_output, feature.visualize(None, None, contribution))
