[Intro to Deep Learning with PyTorch -- L2 -- N9] Perceptron Trick

Posted 2020-12-09 answer1215

Give this:

 

We have a wrongn classified point, how to move the line to come closer to the points?

We apply learning rate and since wrong point is in positive area, we need to  W - learning rate * wrong cord

 

The same, if the wrong point in negivate area, we do : W + learing rate * wrong cord:

 

For the second example, where the line is described by 3x1+ 4x2 - 10 = 0, if the learning rate was set to 0.1, how many times would you have to apply the perceptron trick to move the line to a position where the blue point, at (1, 1), is correctly classified?

Answer: 10 times