CS3120-Homework 5 Neural Networks Solved

1.Read through Slide11 and 12, watch video lectures of neural networks.

2.Run the code “8_NN_2layer.py” (blackboard)

3. Trains the NN more than 1,000 times and observe the change of the loss value.

4. Implement a “3-6-2” network (using code 8_NN_2layer.py) to fit the following data: 

X=np.array(([0,0,1],[0,1,1],[1,0,1],[1,1,1]), dtype=float)

y=np.array(([0,1],[1,0],[1,0],[0,1]), dtype=float)

 

5.  What are the dimension of weight matrix 1 and weight matrix 2? (5pts)

6. Test the two following samples and write down the predicted y values for them. (5 pts)

Testing sample one: X1 = [0, 0, 0]    y1=[? ?]

Testing sample two: X2 = [1,1,1]      y2=[? ?]