frame_plugins::influence

Struct LinearModel

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pub struct LinearModel;
Expand description

Provides a linear influence model where output equals input.

f(x) = x

  • x: input value (e.g., vote weight, token amount)

§Characteristics

  • Direct proportionality between input and output.
  • Simplest and most intuitive model; no transformation applied.
  • Useful as a baseline model or for linear scoring systems.

§Reference

  • Foundational in statistics and physics.
  • Used in linear regression, trend estimation, and baseline economic models.
  • https://en.wikipedia.org/wiki/Linear_function_(calculus)

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impl Debug for LinearModel

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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 LinearModel

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fn default() -> LinearModel

Returns the “default value” for a type. Read more
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impl<Input> PurePluginModel<Input, (), Input> for LinearModel
where Input: Clone,

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

Linear model implementation without needing external context.

Used when influence is directly proportional to the input. Always returns the input value unmodified.

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impl<T> Any for T
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fn instrument(self, span: Span) -> Instrumented<Self>

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fn into_either(self, into_left: bool) -> Either<Self, Self>

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const FALLBACK_TARGET: &'static str = "routine"

Default logging target if none is provided.

Most routines, especially offchain workers or background tasks, use this target for simplicity.

It allows a consistent place to look for routine logs without requiring every call to specify a target.

Note: This target is only a conveninence and may be somewhat vague. To ensure errors can still be traced accurately, the logged messages should include additional metadata (e.g., module name, error index, or contextual info) so that the source of the error can be identified even if the target is generic.

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type Logger = DispatchError

The type taken and returned for logging.

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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fn log( level: <T as Logging<Time>>::Level, err: &<T as Logging<Time>>::Logger, timestamp: Time, target: Option<&str>, fmt: Option<fn(Time, &<T as Logging<Time>>::Level, &str, &str) -> String>, ) -> <T as Logging<Time>>::Logger

Core logging function that all helpers delegate to. Read more
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fn info( err: &Self::Logger, timestamp: Timestamp, target: Option<&str>, fmt: Option<fn(Timestamp, &Self::Level, &str, &str) -> String>, ) -> Self::Logger
where Self: Sized,

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fn debug( err: &Self::Logger, timestamp: Timestamp, target: Option<&str>, fmt: Option<fn(Timestamp, &Self::Level, &str, &str) -> String>, ) -> Self::Logger
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