losses.py 文件源码

def log_loss(weights=1.0, epsilon=1e-7, name='LogLoss', scope=None, collect=True):
    def inner_loss(y_true, y_pred):
        losses = -math_ops.multiply(
            y_true,
            math_ops.log(y_pred + epsilon)) - math_ops.multiply(
            (1 - y_true), math_ops.log(1 - y_pred + epsilon))
        return losses

    return built_loss(inner_loss, weights, name, scope, collect)