The following training set is lineraly separable:
Train (by hand) a linear threshold element on this training set. Your unit will have four inputs counting the one that implements the threshold. Assume that the initial values of all weights are zero. Train your unit with the fixed increment error-correction procedure premium until it converges with a solution. Show the set of weights at the end of each pass through a training cycle. Draw a sketch of a 3-D cube with the preceding inputs as vertices, and sketch in the separating plane corresponding to the final weight set.