Real-time dynamic arithmetic coding for low bit-rate channels
Why this work is in the frame
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Bibliographic record
Abstract
The authors present an implementation and thereby demonstrate the capability of real-time and dynamic arithmetic coding in low-bit-rate serial communications channels. Data files from disk and text entered from the keyboard were compressed in real time using dynamic arithmetic coding. Each character in the source stream was compressed and an arithmetic code stream formed. The code stream was transmitted through an RS-232 channel at bit rates up to 19.2 kb/s. The effective transmission rate, kappa , is greater than the actual transmission rate, where kappa is equivalent to the achieved compression ratio for these low bit rates. Arithmetic coding achieves, on average, a reduction of 15% for binary files, 45% for text files, and up to 90% for special files such as bit maps. For each of these files arithmetic coding achieved better compression ratios than traditional entropy coding techniques, such as Huffman and Shannon-Fano. A software implementation on a 386 IBM compatible computer is described.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it