Struct RateBackendSession 

pub struct RateBackendSession { /* private fields */ }

Stateful rate-backend session for fitting, conditioning, and continuation.

Implementations

impl RateBackendSession

pub fn from_backend( backend: CompiledRateBackend, total_symbols: Option<u64>, ) -> InfotheoryResult<Self>

Create a session from an explicit backend.

Algorithmic configuration (such as ROSA’s max_order) lives inside the backend’s variant; the session does not take it as an argument.

pub fn from_spec( backend: RateBackend, total_symbols: Option<u64>, ) -> InfotheoryResult<Self>

Create a session from a wrapper backend spec.

pub fn observe(&mut self, data: &[u8])

Observe bytes while adapting/fitting the model.

pub fn condition(&mut self, data: &[u8])

Advance conditioning state without changing fitted parameters/statistics.

pub fn reset_frozen( &mut self, total_symbols: Option<u64>, ) -> InfotheoryResult<()>

Reset dynamic conditioning state while preserving fitted parameters/statistics.

pub fn begin_stream( &mut self, total_symbols: Option<u64>, ) -> InfotheoryResult<()>

Start a new stream while preserving each backend’s semantic contract.

Backends that support frozen-reset semantics will restart via reset_frozen. Backends that do not (for example ZPAQ) restart through ordinary stream lifecycle hooks instead.

pub fn fill_log_probs(&mut self, out: &mut [f64; 256])

Fill the 256-way next-byte log-probabilities.

pub fn generate_bytes( &mut self, bytes: usize, config: GenerationConfig, ) -> Vec<u8>

Generate continuation bytes from the current state.

pub fn finish(&mut self) -> InfotheoryResult<()>

Finalize the underlying stream if the backend needs it.