open.source/manifold
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

calculateMoneyRatio

Browse Source
This commit is contained in:
mantikoros 2022-01-13 20:52:03 -06:00
parent 1c74afd741
commit 3cffccdd3f
1 changed files with 3 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
common/calculate.ts
View File

@ -69,15 +69,11 @@ export function calculateRawShareValue(
}
export function calculateMoneyRatio(contract: Contract) {
const { totalShares, phantomShares, pool } = contract
const [yesShares, noShares] = [totalShares.YES, totalShares.NO]
const { YES: yesFake, NO: noFake } = phantomShares
const { totalShares, pool } = contract
const p = getProbability(totalShares)
const actual = pool.YES + pool.NO
const expected = Math.sqrt(
(yesShares - yesFake) ** 2 + (noShares - noFake) ** 2
)
const expected = p * contract.totalBets.YES + (1 - p) * contract.totalBets.NO
return expected === 0 ? 0 : actual / expected
}