def __init__(self, n_iters=1000, lr=0.1, gradient_descent=True):
    self.param = None
    self.n_iters = n_iters
    self.lr = lr
    self.gradient_descent = gradient_descent
    self.sigmoid = Sigmoid()
def __init__(self, n_iters=1000, lr=0.1, gradient_descent=True):
    self.param = None
    self.n_iters = n_iters
    self.lr = lr
    self.gradient_descent = gradient_descent
    self.sigmoid = Sigmoid()