X-Git-Url: https://www.fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=ddpol.py;h=f33b0a1e08be94a8c7e0cbd158dc36c96fa68618;hb=d74d7be5abef26c78d014bd179f2c52f81aca65b;hp=9d14d2ad7d5ad75b979e16477e5047f9e690276e;hpb=fbc0246e209dd03b9c9865904039b565d7fa9f96;p=pytorch.git

diff --git a/ddpol.py b/ddpol.py
index 9d14d2a..f33b0a1 100755
--- a/ddpol.py
+++ b/ddpol.py
@@ -59,6 +59,8 @@ def fit_alpha(x, y, D, a = 0, b = 1, rho = 1e-12):
 
 ######################################################################
 
+# The "ground truth"
+
 def phi(x):
     return torch.abs(torch.abs(x - 0.4) - 0.2) + x/2 - 0.1
 
@@ -111,6 +113,33 @@ fig.savefig('dd-mse.pdf', bbox_inches='tight')
 
 plt.close(fig)
 
+######################################################################
+# Plot multiple MSE vs. degree curves
+
+fig = plt.figure()
+
+ax = fig.add_subplot(1, 1, 1)
+ax.set_yscale('log')
+ax.set_ylim(1e-5, 1)
+ax.set_xlabel('Polynomial degree', labelpad = 10)
+ax.set_ylabel('MSE', labelpad = 10)
+
+nb_train_samples_min = args.nb_train_samples - 4
+nb_train_samples_max = args.nb_train_samples
+
+for nb_train_samples in range(nb_train_samples_min, nb_train_samples_max + 1, 2):
+    mse_train, mse_test = compute_mse(nb_train_samples)
+    e = float(nb_train_samples - nb_train_samples_min) / float(nb_train_samples_max - nb_train_samples_min)
+    e = 0.15 + 0.7 * e
+    ax.plot(torch.arange(args.D_max + 1), mse_train, color = (e, e, 1.0), label = f'Train N={nb_train_samples}')
+    ax.plot(torch.arange(args.D_max + 1), mse_test, color = (1.0, e, e), label = f'Test N={nb_train_samples}')
+
+ax.legend(frameon = False)
+
+fig.savefig('dd-multi-mse.pdf', bbox_inches='tight')
+
+plt.close(fig)
+
 ######################################################################
 # Plot some examples of train / test