How to give initial observations for RL if multiple ObservationInfo are used?

Question

Wing Yin Ng 2020-12-12

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/691635-how-to-give-initial-observations-for-rl-if-multiple-observationinfo-are-used

评论： Valentyna Afanasenko 2021-10-18

Hello everyone, I want to use the RL toolbox in my work. In my custom environment, it has several observations that are in rlNumericSpec, and others are in rlFiniteSetSpec.

I understand that in order to create an ObservationInfo, I can use:

Observation(1) = rlNumericSpec([4 1]);
Observation(2) = rlFiniteSetSpec([1 2 3]);
...

However, in my custom reset (as well as step) function, how should I return the observation, so that the system can recognized it?

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Valentyna Afanasenko 2021-10-18

在 MATLAB Online 中打开

Hi!

obsInfo(1) = rlNumericSpec([m n]); %
obsInfo(2) = rlNumericSpec([l k]);

In ResetFunction:

e.g. initialize by 0

LoggedSignal.State{1} = zeros(m,n); 
LoggedSignal.State{2} = zeros(l,k);
InitialObservation = LoggedSignal.State; 

In StepFunction:

LoggedSignal.State{1}(1:m,1:n)= stepObserv1;
LoggedSignal.State{2}(1:l,1:k)= stepObserv2;
NextObs = LoggedSignals.State;

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Answer 1

Madhav Thakker 2021-2-9

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/691635-how-to-give-initial-observations-for-rl-if-multiple-observationinfo-are-used#answer_618752

Hi Wing Yin Ng,

I understand you want to write custom reset & step function. This MATLAB example talks about how to do the same. Note that you'll have to keep these functions in your current working folder or on the MATLAB path as mentioned here.

Hope this helps.