Feature : Custom cost function

[arita37]

Hello,

Just wondering, how we can use custom cost function ?

def mycost(formuale_str)  : 


   cost = myfun( eval(formulae_str)  ,....)

    return cost

For many problems, cost is very customized.

[brendenpetersen]

You can create your own custom Task, which could be an entirely different search space and/or reward function.

In your case, if you want to keep the search space (assuming mathematical expressions based on your snippet above) then it's probably easiest to subclass the RegressionTask and overwrite reward_function. Or just change reward_function locally if you don't care about upstream changes.

[brendenpetersen]

#43 also relevant

[arita37]

Thanks. Is it possible to have reference of a very mininal example, to have the correct class methods and how to evaluate the math expression: Does eval(expr) require ? Thx

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On Aug 20, 2022, at 4:00, Brenden Petersen ***@***.***> wrote:  #43 also relevant — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.