def test_simple_zca(self):
plt.style.use('ggplot')
original_image_name = format_image_name("simple_zca.png")
original_image = os.path.join(PLOTS_DIR, original_image_name)
image = os.path.join(IMGDIR, "cifar10.png")
data = imread(image)
data = data[:, :, 0]
comparison_kwargs = dict(figsize=(10, 6), tol=0.05)
with image_comparison(original_image, **comparison_kwargs) as fig:
ax = fig.add_subplot(1, 1, 1)
zca = preprocessing.ZCA(0.001)
zca.train(data)
data_transformed = zca.transform(data)
ax.imshow(data_transformed, cmap=plt.cm.binary)
with image_comparison(original_image, **comparison_kwargs) as fig:
ax = fig.add_subplot(1, 1, 1)
zca = preprocessing.ZCA(0.001)
data_transformed = zca.fit(data).transform(data)
ax.imshow(data_transformed, cmap=plt.cm.binary)
def test_max_weight(self):
original_image_name = format_image_name("max_weight_hinton.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 6)) as fig:
weight = 100 * np.random.randn(20, 20)
ax = fig.add_subplot(1, 1, 1)
plots.hinton(weight, ax=ax, max_weight=10, add_legend=True)
def test_log_scale(self):
original_image_name = format_image_name("log_scale.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image) as fig:
ax = fig.add_subplot(1, 1, 1)
network = reproducible_network_train(step=0.3)
network.plot_errors(logx=True, ax=ax, show=False)
def test_hinton_only_negative(self):
original_image_name = format_image_name("hinton_only_negative.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 6)) as fig:
weight = -np.random.random((20, 20))
ax = fig.add_subplot(1, 1, 1)
plots.hinton(weight, ax=ax)
def test_log_scale(self):
original_image_name = format_image_name("log_scale.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image) as fig:
ax = fig.add_subplot(1, 1, 1)
network = reproducible_network_train(step=0.3)
plots.error_plot(network, logx=True, ax=ax, show=False)
def test_max_weight(self):
original_image_name = format_image_name("max_weight_hinton.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 6)) as fig:
weight = 100 * np.random.randn(20, 20)
ax = fig.add_subplot(1, 1, 1)
plots.hinton(weight, ax=ax, max_weight=10, add_legend=True)
def test_simple_plot(self):
original_image_name = format_image_name("simple_plot.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image) as fig:
ax = fig.add_subplot(1, 1, 1)
network = reproducible_network_train(step=0.3)
network.plot_errors(ax=ax, show=False)
def test_simple_plot(self):
original_image_name = format_image_name("simple_plot.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image) as fig:
ax = fig.add_subplot(1, 1, 1)
network = reproducible_network_train(step=0.3)
plots.error_plot(network, ax=ax, show=False)
def test_hinton_1darray(self):
original_image_name = format_image_name("hinton_1darray.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 4)) as fig:
weight = -np.random.randn(20)
ax = fig.add_subplot(1, 1, 1)
plots.hinton(weight, ax=ax)
def test_hinton_only_negative(self):
original_image_name = format_image_name("hinton_only_negative.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 6)) as fig:
weight = -np.random.random((20, 20))
ax = fig.add_subplot(1, 1, 1)
plots.hinton(weight, ax=ax)
def test_hinton_without_legend(self):
original_image_name = format_image_name("hinton_without_legend.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 6)) as fig:
weight = np.random.randn(20, 20)
ax = fig.add_subplot(1, 1, 1)
plots.hinton(weight, ax=ax, add_legend=False)
def test_hinton_without_legend(self):
original_image_name = format_image_name("hinton_without_legend.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 6)) as fig:
weight = np.random.randn(20, 20)
ax = fig.add_subplot(1, 1, 1)
plots.hinton(weight, ax=ax, add_legend=False)
def test_hinton_1darray(self):
original_image_name = format_image_name("hinton_1darray.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 4)) as fig:
weight = -np.random.randn(20)
ax = fig.add_subplot(1, 1, 1)
plots.hinton(weight, ax=ax)
def test_simple_hinton(self):
original_image_name = format_image_name("simple_hinton.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 6)) as fig:
weight = np.random.randn(20, 20)
ax = fig.add_subplot(1, 1, 1)
plt.sca(ax) # To test the case when ax=None
plots.hinton(weight, add_legend=True)
def test_simple_hinton(self):
original_image_name = format_image_name("simple_hinton.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image, figsize=(10, 6)) as fig:
weight = np.random.randn(20, 20)
ax = fig.add_subplot(1, 1, 1)
plt.sca(ax) # To test the case when ax=None
plots.hinton(weight, add_legend=True)
def test_plot_with_validation_dataset(self):
original_image_name = format_image_name("with_validation.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image) as fig:
ax = fig.add_subplot(1, 1, 1)
x_train, x_test, y_train, y_test = simple_classification()
gdnet = algorithms.GradientDescent((10, 12, 1), step=0.25)
gdnet.train(x_train, y_train, x_test, y_test, epochs=100)
plots.error_plot(gdnet, ax=ax, show=False)
def test_plot_with_validation_dataset(self):
original_image_name = format_image_name("with_validation.png")
original_image = os.path.join(IMGDIR, original_image_name)
with image_comparison(original_image) as fig:
ax = fig.add_subplot(1, 1, 1)
x_train, x_test, y_train, y_test = simple_classification()
gdnet = algorithms.GradientDescent((10, 12, 1), step=0.25)
gdnet.train(x_train, y_train, x_test, y_test, epochs=100)
gdnet.plot_errors(ax=ax, show=False)