# Not using constants in trees in SymbolicRegression.jl

**URL:** <https://discourse.julialang.org/t/not-using-constants-in-trees-in-symbolicregression-jl/103231>\
**Category:** Machine Learning\
**Tags:** symbolic-regression\
**Created:** [August 26, 2023, 7:55pm UTC](https://discourse.julialang.org/t/not-using-constants-in-trees-in-symbolicregression-jl/103231 "2023-08-26T19:55:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![VPBML](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/vpbml/32/212617_2.png) [@VPBML](https://discourse.julialang.org/u/VPBML)\
**Post date:** [August 26, 2023, 7:55pm UTC](https://discourse.julialang.org/t/not-using-constants-in-trees-in-symbolicregression-jl/103231/1 "2023-08-26T19:55:25Z")

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Hi,

I wonder how can we tell SymbolicRegression.jl to not use any constants (e.g., 2.0, 15.6) when creating its trees, only the variables. I am using SRRegressor via MLJ interface. Thank you.

Regards