frame_plugins::influence

Struct QuadraticModel

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pub struct QuadraticModel;
Expand description

Provides a quadratic (square-root) influence model that compresses large inputs.

f(x) = sqrt(x)

  • x: input value (e.g., score, weight, or stake)

§Characteristics

  • Non-linear scaling: grows rapidly at small values, slows for larger inputs.
  • Compression effect: prevents large inputs from dominating influence.
  • Handles negative inputs by clamping to zero (no imaginary numbers).

§Applications

  • Voting power normalization
  • Contribution weighting in participatory systems

§References

  • https://en.wikipedia.org/wiki/Square_root_voting_system
  • Signal scaling and information compression

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impl Debug for QuadraticModel

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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 QuadraticModel

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fn default() -> QuadraticModel

Returns the “default value” for a type. Read more
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impl<Input> PurePluginModel<Input, (), Input> for QuadraticModel
where Input: IntegerToFixed + Zero, <Input as FixedForInteger>::FixedPoint: FixedOp + PartialOrd,

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

Quadratic model implementation without external context.

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const FALLBACK_TARGET: &'static str = "routine"

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type Logger = DispatchError

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We simply return the same [DispatchError] that was logged, so logging does not change control flow or error propagation.

DispatchError is used because in Substrate it encompasses all runtime errors - including module errors, token errors, arithmetic issues, and transactional boundaries - making it the universal substrate-side error representation.

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type Level = LogLevel

The log level type.

We use the LogLevel enum to standardize severity levels (Info, Warn, Error, Debug) across all routine logs.

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