From: Jérôme Benoit <jerome.benoit@piment-noir.org>
Date: Wed, 14 Nov 2018 11:04:15 +0000 (+0100)
Subject: TP3 exo2 fixes.
X-Git-Url: https://git.piment-noir.org/?a=commitdiff_plain;h=c60d868ed5752a8c5adef46881c6a8d792351370;p=TP_AA.git

TP3 exo2 fixes.

Signed-off-by: Jérôme Benoit <jerome.benoit@piment-noir.org>
---

diff --git a/TP3/exo2/tp3_exo2.py b/TP3/exo2/tp3_exo2.py
index e1c03dd..4ca092d 100755
--- a/TP3/exo2/tp3_exo2.py
+++ b/TP3/exo2/tp3_exo2.py
@@ -117,7 +117,7 @@ def kg(x, y, sigma=10):
 
 def perceptron_k(X, Y, k):
     coeffs = []
-    support_set = []
+    support_set = np.array([])
     # Go in the loop at least one time
     classification_error = 1
     while not classification_error == 0:
@@ -125,26 +125,31 @@ def perceptron_k(X, Y, k):
         for i in range(X.shape[0]):
             if Y[i] * f_from_k(coeffs, support_set, k, X[i]) <= 0:
                 classification_error += 1
-                support_set.append([Y[i], X[i]])
+                np.append(support_set, X[i])
                 coeffs.append(1)
             else:
                 coeffs[len(coeffs) - 1] = coeffs[len(coeffs) - 1] + 1
-    return coeffs, support_set
+    return np.array(coeffs), support_set
 
 
-def f(x, y, w):
-    return
+def f(w, x, y):
+    return w[0] + w[1] * x + w[2] * y + w[3] * x**2 + w[4] * x * y + w[5] * y**2
 
 
-coeffs, support_set = perceptron_k(X, Y, k1)
+pl.scatter(X[:, 0], X[:, 1], c=Y, s=training_set_size)
+pl.title(u"Perceptron - hyperplan")
+
+# coeffs, support_set = perceptron_k(X, Y, k1)
 # coeffs, support_set = perceptron_k(X, Y, kg)
-print(coeffs)
-print(support_set)
+res = training_set_size
+# for c, X in zip(coeffs, support_set):
+#     pl.plot(X[0], 'xr')
 
 X = apply_plongement(X, plongement_phi)
 w = perceptron_nobias(X, Y)
-print(w)
+for x in range(res):
+    for y in range(res):
+        if abs(f(w, -3 / 2 + 3 * x / res, -3 / 2 + 3 * y / res)) < 0.01:
+            pl.plot(-3 / 2 + 3 * x / res, -3 / 2 + 3 * y / res, 'xb')
 
-pl.scatter(X[:, 0], X[:, 1], c=Y, s=training_set_size)
-pl.title(u"Perceptron - hyperplan")
 pl.show()