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Add insertion op; improve deletion op; add new way to simplify constants #1

Merged
merged 13 commits into from
Sep 19, 2020
Merged

Add insertion op; improve deletion op; add new way to simplify constants #1

merged 13 commits into from
Sep 19, 2020

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MilesCranmer
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Insertion op:

  • Insert random operator inside an equation at a random node, rather than just at a leaf. Binary trees will add a new constant/variable on one of their branches.

Deletion op:

  • Now when deleting an operator from the middle of an equation, it will leave the enclosed operations, rather than replacing them with a constant/variable.

Simplification op:

  • ((x0 + const) + const)=>(x0+const), and ((x0 * const) * const) => (x0 * const) after initially simplifying all constant parts of an equation, like (const ... const) => (const). This seems to help a lot with the new insertion op, which seemed to result in many constants being added together.

Hyperparams:

  • These have been set to hand-chosen values until a new hyperparameter optimization is run.

@MilesCranmer
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E.g.,

julia> printTree(n)
plus(plus(x0, 1.0), 2.0)
julia> printTree(insertRandomOp(copyNode(n)))
div(plus(plus(x0, 1.0), 2.0), 1.2341375)
julia> printTree(combineOperators(copyNode(n)))
plus(x0, 3.0)

@MilesCranmer MilesCranmer merged commit 931a410 into master Sep 19, 2020
@MilesCranmer MilesCranmer deleted the insertionOp branch September 19, 2020 02:44
MilesCranmer pushed a commit that referenced this pull request Jan 19, 2021
@DhananjayAshok
Merge pull request #1 from MilesCranmer/master
7be8652 
Getting up to date
@paseman paseman mentioned this pull request Jul 26, 2022
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@ganatma ganatma mentioned this pull request Oct 18, 2022
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@MilesCranmer