Struct FeastConfig 

pub struct FeastConfig {
    pub n_features: usize,
    pub patch: usize,
    pub tau_ms: f64,
    pub eta: f32,
    pub delta_i: f32,
    pub delta_e: f32,
    pub per_polarity: bool,
    pub seed: u64,
}

Parameters for a Feast model. Defaults follow the paper (patch = 11, eta = 0.001, ΔI = 0.001, ΔE = 0.003); tau_ms defaults to 30 ms to match [crate::representation:: TimeSurface] and is the exponential decay constant of the time-surface patch.

Fields

n_features: usize

Number of feature prototypes per polarity population (b in the paper).

patch: usize

Side length w of the square ROI patch; must be odd so it centres on the event.

tau_ms: f64

Time-surface decay constant, milliseconds.

eta: f32

Weight mixing rate η in w ← (1−η)w + η·d.

delta_i: f32

Threshold contraction on a match (ΔI).

delta_e: f32

Threshold expansion on a miss (ΔE).

per_polarity: bool

When true, ON and OFF events train independent feature populations (as in the paper’s N-MNIST setup); when false, a single population learns from both polarities on one merged surface. For the paper’s ON-only mode, pass an ON-only stream with per_polarity = false.

seed: u64

Seed for the random on-hypersphere feature initialisation — fixes reproducibility.

Trait Implementations

impl Clone for FeastConfig

fn clone(&self) -> FeastConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for FeastConfig

impl Debug for FeastConfig

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

Formats the value using the given formatter.

impl Default for FeastConfig

fn default() -> Self

Returns the “default value” for a type.