Struct ContextModel 

pub struct ContextModel { /* private fields */ }

A context model backed by a ContextMap (hash->state) + StateMap (state->prob). Now also produces run-count and byte-history predictions.

Implementations

impl ContextModel

pub fn new(cmap_size: usize) -> Self

Create a new context model with the given ContextMap size.

pub fn predict(&mut self, hash: u32) -> u32

Predict probability of bit=1 for the given context hash. Returns 12-bit probability in [1, 4095].

pub fn predict_multi(&mut self, hash: u32) -> DualPrediction

Predict dual: (state_p, run_p).

pub fn update(&mut self, bit: u8)

Update the model after observing bit. Must be called after predict() with the same context.

pub fn on_byte_complete(&mut self, _byte: u8)

Notify model that a byte is complete (no-op).