Update app.py

app.py

@@ -60,7 +60,7 @@ ax.fill_between(x_test.ravel(), pred_mean.ravel()-pred_std2.ravel(),
                 pred_mean.ravel()+pred_std2.ravel(), alpha=0.5, label='$\\mu \\pm 2\\sigma$')
 ax.set_xlabel('x')
 ax.set_ylabel('y')
-ax.set_title(f"Negative Log Marginal Likelihood: {scipy.stats.multivariate_normal(np.zeros(3), k_train_with_noise).pdf(y_train.ravel()):.4f}")
+ax.set_title(f"Negative Log Marginal Likelihood: {scipy.stats.multivariate_normal(np.zeros(3), k_train_with_noise).logpdf(y_train.ravel()):.4f}")
 ax.legend()
 
 with st_col: