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Added symbolic functions and tests for reducer interface distribution code

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This commit is contained in:
Ozzie Gooen 2022-04-01 13:21:24 -04:00
parent 28eba9fa74
commit 18d742b63c
2 changed files with 74 additions and 4 deletions
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26
packages/squiggle-lang/__tests__/ReducerInterface/ReducerInterface_Distribution_test.res Normal file
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@ -0,0 +1,26 @@
open Jest
open Reducer_TestHelpers
let makeTest = (str, result) => test(str, () => expectEvalToBe(str, result))
describe("eval", () => {
Only.describe("expressions", () => {
makeTest("normal(5,2)", "Ok(Normal(5,2))")
makeTest("lognormal(5,2)", "Ok(Lognormal(5,2))")
makeTest("mean(normal(5,2))", "Ok(5)")
makeTest("mean(lognormal(1,2))", "Ok(20.085536923187668)")
makeTest("normalize(normal(5,2))", "Ok(Normal(5,2))")
makeTest("toPointSet(normal(5,2))", "Ok(Point Set Distribution)")
makeTest("toSampleSet(normal(5,2), 100)", "Ok(Sample Set Distribution)")
makeTest("add(normal(5,2), normal(10,2))", "Ok(Normal(15,2.8284271247461903))")
makeTest("add(normal(5,2), lognormal(10,2))", "Ok(Sample Set Distribution)")
makeTest("dotAdd(normal(5,2), lognormal(10,2))", "Ok(Point Set Distribution)")
makeTest("dotAdd(normal(5,2), 3)", "Ok(Point Set Distribution)")
makeTest("add(normal(5,2), 3)", "Ok(Point Set Distribution)")
makeTest("add(3, normal(5,2))", "Ok(Point Set Distribution)")
makeTest("3+normal(5,2)", "Ok(Point Set Distribution)")
makeTest("add(3, 3)", "Ok(6)")
makeTest("truncateLeft(normal(5,2), 3)", "Ok(Point Set Distribution)")
makeTest("mean(add(3, normal(5,2)))", "Ok(8.004619792609384)")
})
})

46
packages/squiggle-lang/src/rescript/ReducerInterface/ReducerInterface_GenericDistribution.res
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@ -74,11 +74,54 @@ let genericOutputToReducerValue = (o: GenericDist_GenericOperation.outputType):
| GenDistError(Other(s)) => Error(RETodo(s))
}
module SymbolicConstructor = {
let oneFloat = name =>
switch name {
| "exponential" => Ok(SymbolicDist.Exponential.make)
| _ => Error("impossible path")
}
let twoFloat = name =>
switch name {
| "normal" => Ok(SymbolicDist.Normal.make)
| "uniform" => Ok(SymbolicDist.Uniform.make)
| "beta" => Ok(SymbolicDist.Beta.make)
| "lognormal" => Ok(SymbolicDist.Lognormal.make)
| _ => Error("impossible path")
}
let threeFloat = name =>
switch name {
| "triangular" => Ok(SymbolicDist.Triangular.make)
| _ => Error("impossible path")
}
let symbolicResultToOutput = (
symbolicResult: result<SymbolicDistTypes.symbolicDist, string>,
): option<GenericDist_GenericOperation.outputType> =>
switch symbolicResult {
| Ok(r) => Some(Dist(Symbolic(r)))
| Error(r) => Some(GenDistError(Other(r)))
}
}
let dispatchToGenericOutput = (call: ExpressionValue.functionCall): option<
GenericDist_GenericOperation.outputType,
> => {
let (fnName, args) = call
switch (fnName, args) {
| ("exponential" as fnName, [EvNumber(f1)]) =>
SymbolicConstructor.oneFloat(fnName)
->E.R.bind(r => r(f1))
->SymbolicConstructor.symbolicResultToOutput
| (("normal" | "uniform" | "beta" | "lognormal") as fnName, [EvNumber(f1), EvNumber(f2)]) =>
SymbolicConstructor.twoFloat(fnName)
->E.R.bind(r => r(f1, f2))
->SymbolicConstructor.symbolicResultToOutput
| ("triangular" as fnName, [EvNumber(f1), EvNumber(f2), EvNumber(f3)]) =>
SymbolicConstructor.threeFloat(fnName)
->E.R.bind(r => r(f1, f2, f3))
->SymbolicConstructor.symbolicResultToOutput
| ("sample", [EvDistribution(dist)]) => toFloatFn(#Sample, dist)
| ("mean", [EvDistribution(dist)]) => toFloatFn(#Mean, dist)
| ("normalize", [EvDistribution(dist)]) => toDistFn(Normalize, dist)
@ -88,7 +131,8 @@ let dispatchToGenericOutput = (call: ExpressionValue.functionCall): option<
| ("inv", [EvDistribution(dist), EvNumber(float)]) => toFloatFn(#Inv(float), dist)
| ("toSampleSet", [EvDistribution(dist), EvNumber(float)]) =>
toDistFn(ToSampleSet(Belt.Int.fromFloat(float)), dist)
| ("truncateLeft", [EvDistribution(dist), EvNumber(float)]) => toDistFn(Truncate(Some(float), None), dist)
| ("truncateLeft", [EvDistribution(dist), EvNumber(float)]) =>
toDistFn(Truncate(Some(float), None), dist)
| ("truncateRight", [EvDistribution(dist), EvNumber(float)]) =>
toDistFn(Truncate(None, Some(float)), dist)
| ("truncate", [EvDistribution(dist), EvNumber(float1), EvNumber(float2)]) =>