本文整理汇总了Python中mlp.MLP.update_weights方法的典型用法代码示例。如果您正苦于以下问题：Python MLP.update_weights方法的具体用法？Python MLP.update_weights怎么用？Python MLP.update_weights使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类mlp.MLP的用法示例。
在下文中一共展示了MLP.update_weights方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: main
# 需要导入模块: from mlp import MLP [as 别名]
# 或者: from mlp.MLP import update_weights [as 别名]
def main():
training, count_c0, count_c1 = get_data(122)
dev, _, _ = get_data(122,True)
series_c0, series_c1 = get_time_series()
# A window of 240 corresponds to two hours of heart rate
window_size = 240
print "#class0: ", count_c0/float(window_size), "#class1:", count_c1/float(window_size)
c1 = 0
c0 = 0
print "len training = " + str(len(training))
count0 = 0
count1 = 0
random.shuffle(training)
n_input = window_size
n_hidden = 100
n_output = 1
num_hidden_layers = 1
eta_c = .005
A = .0008
eta = eta_c
mlp = MLP(n_input, num_hidden_layers, n_hidden, n_output, eta)
n_epochs = 400
step = True
l = loss(mlp, training, window_size, window_size/2)
print "initial loss: " + str(l)
for j in range(0, n_epochs):
print "epoch " + str(j)
random.shuffle(training)
c = 0
grad = None
for xs, y in training:
if c == 10:
break
c += 1
part_grad = None
if step:
part_grad = train(mlp, xs, y, window_size, window_size/2)
else:
part_grad = train(mlp, xs, y, window_size, 1)
grad = sum_grad(grad, part_grad)
mlp.update_weights(grad)
if step:
error(mlp, training, window_size, window_size/2)
else:
error(mlp, training, window_size, 1)
if step:
l = loss(mlp, training, window_size, window_size/2)
else:
l = loss(mlp, training, window_size, 1)
print "loss: " + str(l)
eta = A / float(j/float(n_epochs) + 1)
mlp.eta = eta
print "lr:", mlp.eta
if n_epochs % 10 == 0:
if step:
error(mlp, dev, window_size, window_size/2, True)
else:
error(mlp, dev, window_size, 1, True)
print "Getting training accuracy..."
if step:
error(mlp, training, window_size, window_size/2)
else:
error(mlp, training, window_size, 1)
print "Getting dev accuracy..."
if step:
error(mlp, dev, window_size, window_size/2, True)
probs(mlp, series_c0, series_c1, window_size, window_size/2)
else:
error(mlp, dev, window_size, 1, True)
probs(mlp, series_c0, series_c1, window_size, 1)