Struct LogitTrustRegion 

pub struct LogitTrustRegion {
    pub radius: f64,
}

Per-iteration trust-region cap on the assignment logits.

The wiring agent calls LogitTrustRegion::cap_step on each candidate Newton step in assignment-logit space before it is applied, so a single step can never fling the relaxed assignment across the argmax cliff (the discontinuity the τ anneal exists to avoid). The cap is an ∞-norm radius on the logit increment, tied to the current τ: hotter τ (diffuse) tolerates a larger logit move; colder τ (sharp) clamps tighter, because near the cliff a small logit change is a large assignment change.

Fields

radius: f64

∞-norm radius on the logit increment at the current waypoint.

Implementations

impl LogitTrustRegion

pub fn for_tau(tau: f64) -> Self

Build the per-waypoint logit trust region from the current τ. Hotter τ ⇒ larger radius (the assignment map is gentle); colder τ ⇒ tighter radius (near the argmax cliff). The radius is τ · LOGIT_TR_TAU_GAIN clamped to [LOGIT_TR_MIN, LOGIT_TR_MAX].

pub fn cap_step(&self, step_inf_norm: f64) -> LogitStepCap

Decide how to cap a proposed logit increment given its ∞-norm. The wiring agent passes the step’s ∞-norm; this returns whether to apply it unchanged or scaled to the radius. Never rejects.

Trait Implementations

impl Clone for LogitTrustRegion

fn clone(&self) -> LogitTrustRegion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LogitTrustRegion

impl Debug for LogitTrustRegion

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

Formats the value using the given formatter.