What is weights in perceptron I am just diving into machine learning and started with learning artificial neural networks. So on learning about perceptron I stucked on wording "weights".
Is it rate of how much input item matched?
Please explain me what is weights in perceptron.
Thanks in advance!
 A: 
Using this picture I found online, you can see that the perceptron creates $y$ which is just the weighted sum of the inputs multiplied by an activation function (in the image it's a step function). So the weights are just scalar values that you multiple each input by before adding them and applying the nonlinear activation function i.e. $w_1$ and $w_2$ in the image.
So putting it all together, if we have inputs $x_1$ and $x_2$ which produce a known output $y$ then a perceptron using activation function $A$ can be written as
$$y' = \sum{A(x_i * w_i)}$$
The values of these weights are what get trained in the perceptron in such a way as to minimise some error metric between $y$ and $y'$
A: Imagine you have two nodes in a perceptron: node A and node B. These nodes are connected: A projects a connection to B:
A -------------> B

So let's say A has an activation value of 0.5. The weight determines how much that value is changed before it gets to B. So let's say the weight is 4.
        x4
A -------------> B
0.5              ?

So basically, to calculate how much B gets from A, we multiply the value of A with its corresponding weight: 0.5 x 4 = 2.
        x4
A -------------> B
0.5              2

So B gets a value of 2 from A :)
