frame_plugins::elections::flat

Struct TopDownFlatModel

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pub struct TopDownFlatModel;
Expand description

The TopDownFlat model ranks candidates based solely on their aggregated flat weight. Each candidate’s score represents the total support or stake they possess.

Concept: Total-Weight Dominance

The resulting order is strictly determined by these scalar totals - higher weights dominate, ensuring proportional fairness where every unit of influence counts equally.

§Characteristics:

  • Simple aggregation: Treats all contributions as additive and equivalent.
  • Self-inclusive: Candidate’s own weight contributes to their score.
  • Deterministic ordering: Sorted descending by total flat weight.
  • Context-free: Requires no external context or normalization.

§Applications:

  • Stake-based elections
  • Token-weighted voting
  • Simple ranking systems where total influence determines outcome

§Example:

ⓘ
let input = vec![
    ("Alice", 90),
    ("Bob", 50),
    ("Charlie", 80),
];
let output = TopDownFlat::compute(input, None);
assert_eq!(output, vec!["Alice", "Charlie", "Bob"]);

§References

Trait Implementations§

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impl Debug for TopDownFlatModel

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for TopDownFlatModel

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fn default() -> TopDownFlatModel

Returns the “default value” for a type. Read more
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impl<Candidate, FlatWeight, Input, Output> PurePluginModel<Input, (), Output> for TopDownFlatModel
where Input: FromIterator<(Candidate, FlatWeight)> + IntoIterator<Item = (Candidate, FlatWeight)> + Clone, Output: FromIterator<Candidate>, FlatWeight: Ord + Clone, Candidate: Clone,

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fn compute(&self, input: Input, _context: &()) -> Output

Computes the descending rank of candidates by total flat weight.

  1. Collects all (Candidate, FlatWeight) pairs.
  2. Sorts them in descending order of their weight.
  3. Returns the ordered list of candidates.

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