Questions for Review

    1. Explain the difference between supervised and unsupervised training.

    2. What is the primary difference between the delta rule and Hebb's rule?

    3. Consider the following four results; calculate the RMS error.

Training Set #1, Expected = 5, Actual = 5
Training Set #2, Expected = 2, Actual = 3
Training Set #3, Expected = 6, Actual = 5
Training Set #4, Expected = 8, Actual = 4
Training Set #5, Expected = 1, Actual = 2

    4. Use Hebb's rule to calculate the weight adjustment.

Two Neurons: N1 and N2
N1 to N2 Weight: 3
N1 Activation: 2
N2 Activation: 6

    Calculate the weight delta.

    5. Use the delta rule to calculate the weight adjustment.

Two neurons: N1 and N2
N1 to N2 Weight: 3
N1 Activation: 2
N2 Activation: 6, Expected: 5

    Calculate the weight delta.