On Optimal Index Assignment for MAP Decoding of Markov Sequences
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.
Bibliographic record
Abstract
Index assignment and maximum a posteriori (MAP) decoding are two well-known techniques for error-resilient multimedia communications. If the two techniques are used in tandem, how they interact with each other will greatly affect the system performance. An important problem in this regard is, which has seemingly evaded attention, the design of index assignment to achieve the best possible performance of joint source-channel MAP decoding, given the source and channel statistics and given a distortion metric. In a first attempt on this design challenge, we pose the index assignment of a scalar quantizer for MAP decoding of Markov sequences coded by this quantizer as a quadratic programming problem. For Gaussian Markov sequences we derive a locally optimal index assignment by exploring some properties of the objective function. Experimental results show that the proposed scheme can find optimal or near-optimal solutions. The optimized index assignment can achieve much lower average symbol error rate than conventional schemes
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 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 | 0.000 |
| 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