majority_judgment 0.2.0

Resolve Majority Judgment polls, to get the rank of each proposal. Supports billions of judges.

Majority Judgment for Dart

This Dart package helps to resolve polls using Majority Judgment.

Features

• Efficient Majority Judgment algorithm, scales well to billions of participants
• Configure whether to favor adhesion or contestation (default)
• Balance proposal tallies using a static default grade or the median grade¹
• Room for Central Judgment and Usual Judgment
• Unit-tested (run dart test)

Get started

import 'package:majority_judgment/majority_judgment.dart';

void main() {
    
      final pollTally = PollTally([
        [1, 2, 4, 2, 1], // Proposal A, from "worst" grade to "best" grade
        [1, 2, 4, 1, 2], // Proposal B
        [3, 1, 3, 1, 2], // Proposal C
        [1, 2, 4, 2, 1], // Proposal D (equal to A)
      ]);
      final mj = MajorityJudgmentResolver();
      final result = mj.resolve(pollTally);

      print(result.proposalsResults.map((ProposalResult p) => p.rank));
      //> (2, 1, 4, 2)

      print(result.sortedProposalsResults.map((ProposalResult p) => p.index));
      //> (1, 0, 3, 2)
    
}

Contribute

Usual git flow: clone, tinker, request a merge.

Authors

This package was made by MieuxVoter, a french nonprofit.