[mlpack] Reinforcement Learning GSOC

[Sahith D]

Hi Marcus,
This looks very feasible along with being cool and intuitive. We could
implement a system where a user who is a beginner can just choose an
environment and input a particular pre-built methods and can compare
different methods through visualizations and the actual emulation of the
game environment. Other users can have more control and call only specific
functions of the API which they need and can modify everything and these
people would be the ones who would most benefit from a having leaderboard
for comparison between other users on OpenAI gym.
Though I would like to know how in depth you would want this to be. The
optimizer tutorial seems to have pretty much all the major optimizers
currently being used. Do you think we should try something thats as
extensive or just set up a framework for future contributors?

Thanks,
Sahith

On Thu, Mar 1, 2018 at 3:35 PM Marcus Edel <marcus.edel at fu-berlin.de> wrote:

> Hello Sahith,
>
> I like the idea, also since OpenAI abandoned the leaderboard this could be
> a
> great opportunity. I'm a fan of giving a user the opportunity to test the
> methods without much hassle, so one idea is to provide an interface for
> the web,
> that exposes a minimal set of settings, something like:
>
> www.mlpack.org/docs/mlpack-git/doxygen/optimizertutorial.html
>
> Let me know what you think, there are a bunch of interesting features,
> that we
> could look into, but we should make sure each is tangible and useful.
>
> Thanks,
> Marcus
>
> On 28. Feb 2018, at 23:03, Sahith D <sahithdn at gmail.com> wrote:
>
> A playground type project sounds like a great idea. We could start with
> using the current Q-Learning method already present in the mlpack
> repository and then apply it to a environments in gym as a sort of
> tutorial. We could then move onto more complex methods like Double
> Q-Learning and Monte Carlo Tree Search (just suggestions) just to get
> started so that more people will get encouraged to try their hand at
> solving the environments in more creative ways using C++ as the python
> community is already pretty strong. If we could build something of a
> leaderboard similar to what OpenAI gym already has then it could foster a
> creative community of people who want to try more RL. Does this sound good
> or can it be improved upon?
>
> Thanks,
> Sahith.
>
> On Wed, Feb 28, 2018 at 3:50 PM Marcus Edel <marcus.edel at fu-berlin.de>
> wrote:
>
>> Hello Sahith,
>>
>> 1. We could implement all the fundamental RL algorithms like those over
>> here
>> https://github.com/dennybritz/reinforcement-learning . This repository
>> contains
>> nearly all the algorithms that are useful for RL according to David
>> Silver's RL
>> course. They're all currently in python so it could just be a matter of
>> porting
>> them over to use mlpack.
>>
>>
>> I don't think implementing all the methods, is something we should pursue
>> over
>> the summer, writing the method itself and coming up with some meaningful
>> tests
>> takes time. Also, in my opinion instead of implementing all methods, we
>> should
>> pick methods that make sense in a specific context and make them as fast
>> and
>> easy to use as possible.
>>
>> 2. We could implement fewer algorithms but work more on solving the
>> OpenAI gym
>> environments using them. This would require tighter integration of the gym
>> wrapper that you have already written. If enough environments can be
>> solved then
>> this could become a viable C++ library for comparing RL algorithms in the
>> future.
>>
>>
>> I like the idea, this could be a great way to present the RL
>> infrastructure to a
>> wider audience, in the form of a playground.
>>
>> Let me know what you think.
>>
>> Thanks,
>> Marcus
>>
>> On 27. Feb 2018, at 23:01, Sahith D <sahithdn at gmail.com> wrote:
>>
>> Hi Marcus,
>> Sorry for not updating you earlier as I had some exams that I needed to
>> finish first.
>> I've been working on the policy gradient over in this repository which
>> you can see over here https://github.com/SND96/mlpack-rl
>> I also had some ideas on what this project could be about.
>>
>> 1. We could implement all the fundamental RL algorithms like those over
>> here https://github.com/dennybritz/reinforcement-learning . This
>> repository contains nearly all the algorithms that are useful for RL
>> according to David Silver's RL course. They're all currently in python so
>> it could just be a matter of porting them over to use mlpack.
>> 2. We could implement fewer algorithms but work more on solving the
>> OpenAI gym environments using them. This would require tighter integration
>> of the gym wrapper that you have already written. If enough environments
>> can be solved then this could become a viable C++ library for comparing RL
>> algorithms in the future.
>>
>> Right now I'm working on the solving one of the environments in gym using
>> a Deep Q-Learning approach similar to what is already there in the mlpack
>> library from last year's gsoc. Its taking a bit longer than I hoped as I'm
>> still familiarizing myself with some of the server calls being made and how
>> to properly get information about the environements. Would appreciate your
>> thoughts on the ideas that I have and anything else that you had in mind.
>>
>> Thanks!
>> Sahith
>>
>> On Fri, Feb 23, 2018 at 1:50 PM Sahith D <sahithdn at gmail.com> wrote:
>>
>>> Hi Marcus,
>>> I've been having difficulties compiling mlpack which has stalled my
>>> progress. I've opened an issue on the same and appreciate any help.
>>>
>>> On Thu, Feb 22, 2018 at 10:09 AM Sahith D <sahithdn at gmail.com> wrote:
>>>
>>>> Hey Marcus,
>>>> No problem with the slow response as I was familiarizing myself better
>>>> with the codebase and the methods present in the meantime. I'll start
>>>> working on what you mentioned. I'll notify you when I finish.
>>>>
>>>> Thanks!
>>>>
>>>> On Thu, Feb 22, 2018 at 4:56 AM Marcus Edel <marcus.edel at fu-berlin.de>
>>>> wrote:
>>>>
>>>>> Hello Sahith,
>>>>>
>>>>> thanks for getting in touch and sorry for the slow response.
>>>>>
>>>>> > My name is Sahith. I've been working on Reinforcement Learning for
>>>>> the past year
>>>>> > and am interested in coding with mlpack on the RL project for this
>>>>> summer. I've
>>>>> > been going through the codebase and have managed to get the Open AI
>>>>> gym api up
>>>>> > and running on my computer. Is there any other specific task I can
>>>>> do while I
>>>>> > get to know more of the codebase?
>>>>>
>>>>> Great that you got it all working, another good entry point is to
>>>>> write a simple
>>>>> RL method, one method that is simple that comes to mind is the Policy
>>>>> Gradients
>>>>> method. Another idea is to write an example for solving a GYM
>>>>> environment with
>>>>> the existing codebase, something in the vein of the Kaggel Digit
>>>>> Recognizer
>>>>> Eugene wrote
>>>>> (https://github.com/mlpack/models/tree/master/Kaggle/DigitRecognizer).
>>>>>
>>>>> Let me know if I should clarify anything.
>>>>>
>>>>> Thanks,
>>>>> Marcus
>>>>>
>>>>> > On 19. Feb 2018, at 20:41, Sahith D <sahithdn at gmail.com> wrote:
>>>>> >
>>>>> > Hello Marcus,
>>>>> > My name is Sahith. I've been working on Reinforcement Learning for
>>>>> the past year and am interested in coding with mlpack on the RL project for
>>>>> this summer. I've been going through the codebase and have managed to get
>>>>> the Open AI gym api up and running on my computer. Is there any other
>>>>> specific task I can do while I get to know more of the codebase?
>>>>> > Thanks!
>>>>>
>>>>>
>>
>
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