Created
July 10, 2018 22:41
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X = np.array([[0.], [1.], [2.], [3.]]) | |
y = np.array([0., 2., 4., 6.]) | |
w_space = np.arange(-3., 7.5, 1.0) | |
parameters_list = list() | |
for w_value in w_space: | |
parameters = {'w': np.array([w_value]), 'b': 0.} | |
parameters_list.append(parameters) | |
mae_list = list() | |
mse_list = list() | |
for parameter_set in parameters_list: | |
mae_error = mae([predict(x, parameter_set) for x in X], y) | |
mae_list.append(mae_error) | |
mse_error = mse([predict(x, parameter_set) for x in X], y) | |
mse_list.append(mse_error) | |
f, axarr = plt.subplots(1, 2, figsize=(16, 5)) | |
axarr[0].scatter(w_space, mae_list, edgecolor='black', linewidth='1', s=35, zorder=2) | |
axarr[0].plot(w_space, mae_list, zorder=1) | |
axarr[0].set_title("MAE") | |
axarr[0].set_xlabel("w") | |
axarr[0].set_ylabel("error") | |
axarr[0].set_xticks(np.arange(-3., 7.5, 1.0)) | |
axarr[0].grid(color='blue', linestyle='--', linewidth=1, alpha=0.1) | |
axarr[0].spines["top"].set_visible(False) | |
axarr[0].spines["right"].set_visible(False) | |
axarr[0].spines["bottom"].set_visible(False) | |
axarr[0].spines["left"].set_visible(False) | |
axarr[1].scatter(w_space, mse_list, edgecolor='black', linewidth='1', s=35, zorder=2, c="orange") | |
axarr[1].plot(w_space, mse_list, zorder=1, c="orange") | |
axarr[1].set_title("MSE") | |
axarr[1].set_xlabel("w") | |
axarr[1].set_ylabel("error") | |
axarr[1].set_xticks(np.arange(-3., 7.5, 1.0)) | |
axarr[1].grid(color='blue', linestyle='--', linewidth=1, alpha=0.1) | |
axarr[1].spines["top"].set_visible(False) | |
axarr[1].spines["right"].set_visible(False) | |
axarr[1].spines["bottom"].set_visible(False) | |
axarr[1].spines["left"].set_visible(False) |
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