added conv example

Author: omaraflak

example_conv.py

@@ -0,0 +1,29 @@
+from network import Network
+from fc_layer import FCLayer
+from conv_layer import ConvLayer
+from activation_layer import ActivationLayer
+from losses import *
+from activations import *
+import numpy as np
+
+# training data
+x_train = [np.random.rand(10,10,1)];
+y_train = [np.random.rand(4,4,2)];
+
+# network
+net = Network();
+net.add(ConvLayer((10,10,1), (3,3), 1));
+net.add(ActivationLayer((8,8,1), tanh, tanh_prime));
+net.add(ConvLayer((8,8,1), (3,3), 1));
+net.add(ActivationLayer((6,6,1), tanh, tanh_prime));
+net.add(ConvLayer((6,6,1), (3,3), 2));
+net.add(ActivationLayer((4,4,2), tanh, tanh_prime));
+
+# train
+net.use(mse, mse_prime);
+net.fit(x_train, y_train, epochs=1000, learning_rate=0.3);
+
+# test
+out = net.predict(x_train);
+print("predicted = ", out);
+print("expected = ", y_train);