I am new to machine learning and I know how to implement simple neural networks using logistic regression as a cost function. But I want to know whether neural nets are used in reinforcement learning in general(and not just in special cases) ? If yes, then what cost function they use. As I already know neural nets with logistic regression are used in supervised learning and reinforcement learning is a part of unsupervised learning. There are many threads which are related to RL and neural nets but all of them are about a particular case or an algorithm and I want to know about RL in general.
How are neural networks used in reinforcement learning?
neural networks;machine learning;reinforcement learning;unsupervised learning