Utility Functions

• If you're going to use this stuff, you need a utility function.
• Money is easy, but it really depends on the domain.
• It's best if you have a consistent relationship between two states.
• It's even better to have a total relation (like money).
• Relationships can be really complex. I Love Eden most of all, and I Love Jody most of all.
• However, you can work with dynamic functions.
• It's just harder.
• An action can have different outcomes.
• The expected utility of an action is the probability of the outcomes times the utility of the outcomes.
• So, if a bandit wins 100£ 10% of the time, and nothing 90%, the expected utility is 10£.