MétaCan
Menu
Back to cohort
Record W1651493696 · doi:10.1109/adfsp.1998.685719

Wavelet de-noising of coarsely quantized signals

2002· article· en· W1651493696 on OpenAlexaff
Stephen W. Neville, N.J. Dimopoulos

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicImage and Signal Denoising Methods
Canadian institutionsUniversity of Victoria
Fundersnot available
KeywordsWaveletThresholdingGaussian noiseNoise (video)SIGNAL (programming language)Computer scienceQuantization (signal processing)Wavelet transformArtificial intelligenceGaussianAlgorithmNoise measurementPattern recognition (psychology)Step detectionMathematicsNoise reductionComputer visionPhysicsImage (mathematics)

Abstract

fetched live from OpenAlex

A methodology to address the problem of generating a de-noised estimate of a coarsely quantized, noise contaminated signal is presented via a two-step wavelet de-noising approach. In the first step, the signal is de-noised in accordance with the traditional wavelet de-noising methodologies, in which the noise contamination is assumed to be Gaussian. In the second step, a correction is then applied, through the use of a moving average signal estimate, to account for the non-Gaussian nature of the coarse quantization noise. This moving average signal estimate is also utilized in analyzing which combination of the tested mother wavelet functions, threshold determination methodologies, and thresholding functions provided the "best" estimate of the original noise-free signal. The motivation behind this work is to enable the development of model based fault detection approaches suitable for retro-fitting to existing industrial status monitoring systems.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.003
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.001
Threshold uncertainty score0.005

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.003
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.001
Science and technology studies0.0000.001
Scholarly communication0.0010.001
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0010.000

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 head0.059
GPT teacher head0.290
Teacher spread0.230 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreMethods

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations5
Published2002
Admission routes1
Has abstractyes

Explore more

Same topicImage and Signal Denoising MethodsFrench-language works237,207