function which we call as the objective function J of W now remember that W is just a aggregation or a collection of all of the individual w's from all of your weights so here this is just a way for me to express this in a clean notation but W is a whole set of numbers it's not just a single number and you want to find this all of the W's you want to find the value of each of those weights such that you can minimize this entire loss function it's a very complicated problem and remember that our loss function is just a simple