Struct SectionPosteriorState 

pub struct SectionPosteriorState {
    pub posteriors: HashMap<SectionType, BetaPosterior>,
    pub priors: HashMap<SectionType, BetaPosterior>,
    pub total_events: u64,
    pub exploration_epoch: u64,
}

Per-profile section posterior state (ADR-048 Phase 1).

Fields

posteriors: HashMap<SectionType, BetaPosterior>

priors: HashMap<SectionType, BetaPosterior>

total_events: u64

exploration_epoch: u64

Implementations

impl SectionPosteriorState

pub fn new() -> Self

Create with default informative priors for all 10 section types.

pub fn from_priors(priors: HashMap<SectionType, BetaPosterior>) -> Self

Create from explicit prior map. Missing sections get neutral Beta(2,2) fallback.

pub fn default_priors() -> HashMap<SectionType, BetaPosterior>

Default informative priors from ADR-048.

pub fn to_snapshot(&self) -> SectionPosteriorSnapshot

pub fn from_snapshot(snapshot: SectionPosteriorSnapshot) -> Self

pub fn weights(&self, rng: &mut impl Rng) -> HashMap<SectionType, f64>

Thompson sampling weights (stochastic when exploring, deterministic otherwise).

pub fn sample_weights(&self, rng: &mut impl Rng) -> HashMap<SectionType, f64>

Stochastic weights via Thompson sampling + softmax (ADR-048 Correction 1).

Explore mode (exploration_epoch > 0): tau = tau_0 * (exploration_epoch / DEFAULT_EXPLORATION_EPOCH) theta_i ~ Beta(alpha_i, beta_i) via Gamma-ratio method w_i = softmax(theta_i / tau), then floor at DEFAULT_SECTION_WEIGHT_FLOOR + renorm

Exploit mode (exploration_epoch == 0): delegates to deterministic_weights() with tau_exploit = DEFAULT_TAU_EXPLOIT applied over posterior means.

pub fn deterministic_weights(&self) -> HashMap<SectionType, f64>

Deterministic weights from posterior means with exploit-mode softmax (ADR-048 Correction 1).

Uses tau_exploit = DEFAULT_TAU_EXPLOIT (0.1) over posterior means, then applies weight floor at DEFAULT_SECTION_WEIGHT_FLOOR and renormalizes.

pub fn reset_posteriors(&mut self)

Reset posteriors to their stored priors.

Trait Implementations

impl Default for SectionPosteriorState

fn default() -> Self

Returns the “default value” for a type.

impl Fold<Event, SectionPosteriorState> for SectionPosteriorFold

fn init(&self, _context: &FoldContext) -> SectionPosteriorState

Get the initial state before any entries are processed.

fn reduce( &self, state: SectionPosteriorState, event: &Event, _ctx: &FoldContext, ) -> SectionPosteriorState

Process a single entry and return the new state.

fn finalize( &self, state: SectionPosteriorState, _context: &FoldContext, ) -> SectionPosteriorState

Finalize the state after all entries are processed.

fn derive<'a, I>(&self, entries: I, context: &FoldContext) -> FoldOutcome<S>

where Self: Sized, I: IntoIterator<Item = &'a L>, L: 'a,

Derive state from an iterator of entries.

fn derive_filtered<'a, I, F>( &self, entries: I, context: &FoldContext, filter: F, ) -> FoldOutcome<S>

where Self: Sized, I: IntoIterator<Item = &'a L>, L: 'a, F: Fn(&L) -> bool,

Derive state with a filter.