class Logistic$($object$)$:

def $\_\_$init$\_\_($self$,$ n$\_$class: int, lr: float, epochs: int, weight$\_$decay: float$)$:

$"""$Initialize a new classifier.

Parameters:

lr: the learning rate

epochs: the number of epochs to train for

$"""$

self.w $=$ None

self.lr $=$ lr

self.epochs $=$ epochs

self.n$\_$class $=$ n$\_$class

self.threshold $=0\mathrm{.}5$ # To threshold the sigmoid

self.weight$\_$decay $=$ weight$\_$decay