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Record W2114590489 · doi:10.1109/aero.2002.1036115

Greedy adaptive Fano coding

2003· article· en· W2114590489 on OpenAlex
Luis Rueda, B. John Oommen

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

VenueProceedings - IEEE Aerospace Conference · 2003
Typearticle
Languageen
FieldComputer Science
TopicAlgorithms and Data Compression
Canadian institutionsCarleton University
Fundersnot available
KeywordsHuffman codingComputer scienceAlgorithmDecoding methodsGreedy algorithmAdaptive codingBinary numberBinary codeTheoretical computer scienceCoding (social sciences)Shannon–Fano codingData compressionLossless compressionMathematics

Abstract

fetched live from OpenAlex

In this paper, we propose a greedy technique for adaptive Fano coding, which is suitable for a wide range of applications, specially those in which memory constraints are tight. Our scheme has great potential in maximizing the output entropy, and thus has also indirect cryptographic implications. This paper includes the encoding and decoding algorithms, and the partitioning procedures suitable for the binary and r-ary schemes. It also includes a rigorous analysis of the properties of the algorithm. Empirical results demonstrate that our adaptive Fano scheme compresses marginally less than the adaptive Huffman scheme. In terms of speed, the former is faster in the compression phase and slower in the decompression phase. We also present the extension of the binary adaptive Fano coding method to multi-symbol code alphabets. We introduce the corresponding partitioning procedure, which deals with consecutive partitionings that satisfy the principles of Fano coding. To find the optimal partitioning, we propose a brute force algorithm that searches the entire space of all possible partitionings in O(m/sup r-1/) time. As opposed to this, we propose a greedy linear-time algorithm that finds a sub-optimal but accurate consecutive partitioning.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

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 categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.900
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0010.002
Open science0.0010.000
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 head0.037
GPT teacher head0.244
Teacher spread0.206 · 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