# Crate ratel_bandit

source ·## Expand description

## §Ratel

A library for running multi-armed bandit simulations.

The simulation has two components: a Bandit with some number of arms which each has a payout according to some distribution, and an Agent that uses some strategy to learn the optimal bandit arm. A Game then consists of an Agent learning about a Bandit by pulling arms according to its preferred strategy.

## Structs§

- A bandit whose arms distribute rewards according to the binomial distributions.
- Agent that follows the Epsilon-Greedy Algorithm.
- A bandit whose arms distribute rewards according to the exponential distributions.
- Structure to make the Agent interact with the Bandit.
- A bandit whose arms distribute rewards according to the gamma distributions.
- A bandit whose arms distribute rewards according to the Gaussian distributions.
- Agent that follows the Greedy Algorithm.
- Stepper with a harmonically decreasing step size.
- A bandit whose arms distribute rewards according to the Log Normal distributions.
- Agent that follows the Optimistic Algorithm.
- Counter for cases where individual records must be maintained.

## Traits§

- A trait for common members of the Agents.
- A trait for common members of the Bandits
- A trait for common methods required by all counters.
- Trait containing all methods required by all steppers.

## Functions§

- Prints the amount of time that has elapsed since a timer was started.