ecclesia/dist/actors/disagreement.js

Framework for political and electoral simulations

// src/actors/disagreement.ts
import { sum } from "@gouvernathor/python";
function symmetricDiff({ nOpinions, opinMax }) {
  return (a, b) => sum(a.map((oa, i) => Math.abs(oa - b[i]))) / (nOpinions * 2 * opinMax);
}
function ponderedDiff({ nOpinions, opinMax }) {
  return (a, b) => sum(a.map((oa, i) => Math.abs(oa - b[i]) * b[i])) / (nOpinions * 2 * opinMax ** 2);
}
function fromMaxDiff({ nOpinions, opinMax }) {
  return (a, b) => {
    let diffSum = 0;
    for (let i = 0; i < nOpinions; i++) {
      const ao = a[i];
      const bo = b[i];
      if (ao * bo < 0) {
        diffSum += Math.abs(ao * bo);
      } else if (Math.abs(ao) < Math.abs(bo)) {
        ;
      } else {
        diffSum += Math.abs(ao - bo);
      }
    }
    return diffSum / (nOpinions * opinMax ** 2);
  };
}
export {
  fromMaxDiff,
  ponderedDiff,
  symmetricDiff
};
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