Merge pull request #860 from quantified-uncertainty/sampleN

`mapSamplesN`
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Ozzie Gooen 2022-07-18 21:17:38 -07:00 committed by GitHub
commit e6b402c7d8
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4 changed files with 45 additions and 1 deletions

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@ -21,6 +21,10 @@ describe("builtin", () => {
"addOne(t)=t+1; toList(mapSamples(fromSamples([1,2,3,4,5,6]), addOne))",
"Ok([2,3,4,5,6,7])",
)
testEval(
"toList(mapSamplesN([fromSamples([1,2,3,4,5,6]), fromSamples([6, 5, 4, 3, 2, 1])], {|x| x[0] > x[1] ? x[0] : x[1]}))",
"Ok([6,5,4,4,5,6])",
)
})
describe("builtin exception", () => {

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@ -117,6 +117,11 @@ let map3 = (
): result<t, sampleSetError> =>
E.A.zip3(get(t1), get(t2), get(t3))->E.A2.fmap(E.Tuple3.toFnCall(fn))->_fromSampleResultArray
let mapN = (~fn: array<float> => result<float, Operation.Error.t>, ~t1: array<t>): result<
t,
sampleSetError,
> => E.A.transpose(E.A.fmap(get, t1))->E.A2.fmap(fn)->_fromSampleResultArray
let mean = t => T.get(t)->E.A.Floats.mean
let geomean = t => T.get(t)->E.A.Floats.geomean
let mode = t => T.get(t)->E.A.Floats.mode

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@ -149,6 +149,27 @@ let callInternal = (call: functionCall, environment, reducer: ExpressionT.reduce
doLambdaCall(aLambdaValue, list{IEvNumber(a), IEvNumber(b), IEvNumber(c)})
SampleSetDist.map3(~fn, ~t1, ~t2, ~t3)->toType
}
let parseSampleSetArray = (arr: array<internalExpressionValue>): option<
array<SampleSetDist.t>,
> => {
let parseSampleSet = (value: internalExpressionValue): option<SampleSetDist.t> =>
switch value {
| IEvDistribution(SampleSet(dist)) => Some(dist)
| _ => None
}
E.A.O.openIfAllSome(E.A.fmap(parseSampleSet, arr))
}
let mapN = (aValueArray: array<internalExpressionValue>, aLambdaValue) => {
switch parseSampleSetArray(aValueArray) {
| Some(t1) =>
let fn = a => doLambdaCall(aLambdaValue, list{IEvArray(E.A.fmap(x => IEvNumber(x), a))})
SampleSetDist.mapN(~fn, ~t1)->toType
| None =>
Error(REFunctionNotFound(call->functionCallToCallSignature->functionCallSignatureToString))
}
}
}
let doReduceArray = (aValueArray, initialValue, aLambdaValue) => {
@ -230,6 +251,8 @@ let callInternal = (call: functionCall, environment, reducer: ExpressionT.reduce
],
) =>
SampleMap.map3(dist1, dist2, dist3, aLambdaValue)
| ("mapSamplesN", [IEvArray(aValueArray), IEvLambda(aLambdaValue)]) =>
SampleMap.mapN(aValueArray, aLambdaValue)
| ("reduce", [IEvArray(aValueArray), initialValue, IEvLambda(aLambdaValue)]) =>
doReduceArray(aValueArray, initialValue, aLambdaValue)
| ("reduceReverse", [IEvArray(aValueArray), initialValue, IEvLambda(aLambdaValue)]) =>
@ -246,7 +269,6 @@ let callInternal = (call: functionCall, environment, reducer: ExpressionT.reduce
Error(REFunctionNotFound(call->functionCallToCallSignature->functionCallSignatureToString)) // Report full type signature as error
}
}
/*
Reducer uses Result monad while reducing expressions
*/

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@ -631,6 +631,19 @@ module A = {
)
let filter = Js.Array.filter
let joinWith = Js.Array.joinWith
let transpose = (xs: array<array<'a>>): array<array<'a>> => {
let arr: array<array<'a>> = []
for i in 0 to length(xs) - 1 {
for j in 0 to length(xs[i]) - 1 {
if Js.Array.length(arr) <= j {
ignore(Js.Array.push([xs[i][j]], arr))
} else {
ignore(Js.Array.push(xs[i][j], arr[j]))
}
}
}
arr
}
let all = (p: 'a => bool, xs: array<'a>): bool => length(filter(p, xs)) == length(xs)
let any = (p: 'a => bool, xs: array<'a>): bool => length(filter(p, xs)) > 0