Find centralized, trusted content and collaborate around the technologies you use most.
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
当您只能访问梯度评估而不能访问函数评估时,有没有办法选择步长来进行梯度下降?
我知道要优化的函数是凸函数,给定一个点 x,我可以访问 f'(x),但不能访问 f(x)。在这种情况下,除了梯度下降的固定步长规则之外,我还能做任何事情吗?