MatchModel

infotheory::backends::match_model

Struct MatchModel 

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

Local match predictor with configurable contiguous or gapped matching.

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impl MatchModel

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pub fn new( hash_bits: usize, min_len: usize, max_len: usize, gap_min: usize, gap_max: usize, base_mix: f64, confidence_scale: f64, ) -> Self

Create a match model with an inclusive stride range [gap_min+1, gap_max+1].

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pub fn new_contiguous( hash_bits: usize, min_len: usize, max_len: usize, base_mix: f64, confidence_scale: f64, ) -> Self

Convenience constructor for contiguous matching (gap_min = gap_max = 0).

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

Fill out with the current normalized byte PDF.

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pub fn pdf(&mut self) -> &[f64; 256]

Borrow the current normalized byte PDF.

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pub fn cdf(&mut self) -> &[f64; 257]

Borrow the cumulative distribution derived from the current PDF.

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

Return ln(max(P(symbol), min_prob)).

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

Observe one symbol and update match tables/history.

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pub fn reset_history(&mut self)

Reset conditioning while preserving learned match tables and fitted corpus bytes.

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

Advance conditioning history without updating learned match tables.

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pub fn match_len(&mut self) -> usize

Length of the best match used for the last computed distribution.

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pub fn predicted_byte(&mut self) -> Option<u8>

Predicted next byte from the best match, if any.

Trait Implementations§

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impl Clone for MatchModel

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fn clone(&self) -> MatchModel

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for MatchModel

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

Formats the value using the given formatter. Read more

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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where Self: Binary,

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where Self: Display,

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where Self: LowerExp,

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where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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