Questions tagged [reward-design]

For questions about designing (or defining) reward functions e.g. for reinforcement learning problems.

8 questions with no upvoted or accepted answers
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How define a reward function for a humanoid agent whose goal is to stand up from the ground?

I'm trying to teach a humanoid agent how to stand up after falling. The episode starts with the agent lying on the floor with its back touching the ground, and its goal is to stand up in the shortest ...
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34 views

Is better to reward short- or long-term progress in Q-learning?

I have been training some kind of agent to reach a target using a Q-learning based approach, and I have tried two different types of rewards: Long-term reward: $\mathrm{reward} = - \mathrm{distance}(\...
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0answers
22 views

How can I discourage the RL agent from drawing in a zero-sum game?

My agent receives $1, 0, -1$ rewards for winning, drawing, and losing the game, respectively. What would be the consequences of setting reward to $-1$ for draws? Would that encourage the agent to win ...
2
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45 views

How to combine two differently equally important signals into the reward function, that have different scales?

I have two signals that I want to use to model my reward. The first one is the CPU TIME: running mean from this diagram: The second one is the MAX RESIDUAL from this diagram: Since they are both ...
2
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1answer
111 views

How can I implement the reward function for an 8-DOF robot arm with TRPO?

I need to get an 8-DOF (degrees of freedom) robot arm to move a specified point. I need to implement the TRPO RL code using OpenAI gym. I already have the gazebo environment. But I am unsure of how to ...
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46 views

Designing a reward function for my reinforcement learning problem

I'm working on a project lately and I'm trying to solve a problem with reinforcement learning and I have serious issues with shaping the reward function. The problem is designing a device with maximum ...
0
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0answers
21 views

dDQN converges, but makes suboptimal decisions that are mainly focused on retrieving short-term reward

I use a dDQN to dispatch drivers in a ride-hailing environment. The action space has size (#drivers + 1), which means we can choose one of the drivers or choose to refuse an order (and wait for the ...
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38 views

Thompson sampling with Bernoulli prior and non-binary reward update

I am solving a problem for which I have to select the best possible servers (level 1) to hit for a given data. These servers (level 1) in turn hit some other servers (level 2) to complete the request. ...