ZpaqRateModel

infotheory::backends::zpaq_rate

Struct ZpaqRateModel 

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pub struct ZpaqRateModel { /* private fields */ }
Expand description

Stateful ZPAQ-based rate estimator. Stateful ZPAQ-backed estimator of sequential symbol log-probabilities.

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impl ZpaqRateModel

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pub fn new(method: impl Into<String>, min_prob: f64) -> Self

Create a new model with the provided streamable ZPAQ method.

min_prob clamps very small probabilities for numerical stability.

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pub fn reset(&mut self)

Reset model state and clear any pending prediction cache.

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pub fn log_prob(&mut self, symbol: u8) -> f64

Return ln p(symbol | history) under the current model state.

This may cache the encoded-bit result for a matching immediate update.

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

Fill 256-way log-probabilities for the current committed history without mutation.

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

Advance model state with one observed symbol.

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pub fn update_and_score(&mut self, data: &[u8]) -> f64

Score and consume an entire byte slice, returning total code length in bits.

Trait Implementations§

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impl Clone for ZpaqRateModel

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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