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Record W2108250525 · doi:10.1109/tit.2009.2032803

On the Redundancy of Slepian–Wolf Coding

2009· article· en· W2108250525 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueIEEE Transactions on Information Theory · 2009
Typearticle
Languageen
FieldEngineering
TopicWireless Communication Security Techniques
Canadian institutionsMcMaster UniversityUniversity of Waterloo
Fundersnot available
KeywordsEmphasis (telecommunications)NotationMathematicsDecoding methodsDiscrete mathematicsCombinatoricsComputer scienceAlgorithmArithmetic

Abstract

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<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this paper, the redundancy of both variable and fixed rate Slepian–Wolf coding is considered. Given any jointly memoryless source-side information pair <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$\{(X_i, Y_i)\}_{i=1}^{\infty}$</tex></formula></emphasis> with finite alphabet, the redundancy <emphasis emphasistype="italic"><formula formulatype="inline"> <tex Notation="TeX">$R^n(\epsilon_n)$</tex></formula></emphasis> of variable rate Slepian–Wolf coding of <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$X_1^n$</tex></formula></emphasis> with decoder only side information <emphasis emphasistype="italic"><formula formulatype="inline"> <tex Notation="TeX">$Y_1^n$</tex></formula></emphasis> depends on both the block length <emphasis emphasistype="italic"><formula formulatype="inline"> <tex Notation="TeX">$n$</tex></formula></emphasis> and the decoding block error probability <emphasis emphasistype="italic"><formula formulatype="inline"> <tex Notation="TeX">$\epsilon_n$</tex></formula></emphasis>, and is defined as the difference between the minimum average compression rate of order <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$n$</tex> </formula></emphasis> variable rate Slepian–Wolf codes having the decoding block error probability less than or equal to <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$\epsilon_n$</tex></formula></emphasis>, and the conditional entropy <emphasis emphasistype="italic"><formula formulatype="inline"> <tex Notation="TeX">$H(X\vert Y)$</tex></formula></emphasis>, where <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$H(X\vert Y)$</tex></formula></emphasis> is the conditional entropy rate of the source given the side information. The redundancy of fixed rate Slepian–Wolf coding of <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$X_1^n$</tex></formula></emphasis> with decoder only side information <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$Y_1^n$</tex> </formula></emphasis> is defined similarly and denoted by <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$R^n_F(\epsilon_n)$</tex></formula></emphasis>. It is proved that under mild assumptions about <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$\epsilon_n,$</tex></formula></emphasis> <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$R^n(\epsilon_n) = d_v \sqrt{-\log\epsilon_n/n} + o(\sqrt{-\log \epsilon_n/n})$</tex></formula></emphasis> and <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$R^n_{F}(\epsilon_n) = d_f \sqrt{- \log \epsilon_n / n} + o(\sqrt{-\log \epsilon_n/n})$</tex></formula></emphasis>, where <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$d_f$</tex> </formula></emphasis> and <emphasis emphasistype="italic"><formula formulatype="inline"> <tex Notation="TeX">$d_v$</tex></formula></emphasis> are two constants completely determined by the joint distribution of the source-side information pair. Since <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$d_v$</tex> </formula></emphasis> is generally smaller than <emphasis emphasistype="italic"><formula formulatype="inline"><tex Notation="TeX">$d_f$</tex></formula></emphasis>, our results show that variable rate Slepian–Wolf coding is indeed more efficient than fixed rate Slepian–Wolf coding. </para>

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Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.990
Threshold uncertainty score0.364

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.009
GPT teacher head0.220
Teacher spread0.211 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it