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The Discrete Orthogonal Stockwell Transforms for Infinite-Length Signals and Their Real-Time Implementations

2023· article· en· W4388117731 on OpenAlexaff
Yusong Yan, Hongmei Zhu

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicImage and Signal Denoising Methods
Canadian institutionsYork University
Fundersnot available
KeywordsFast Fourier transformAlgorithmSignal processingSIGNAL (programming language)Computer scienceDiscrete-time signalBoundary (topology)Computational complexity theoryProcess (computing)Discrete time and continuous timeDigital signal processingMathematicsAnalog signalMathematical analysisSignal transfer functionStatistics

Abstract

fetched live from OpenAlex

In recent literature, the discrete Stockwell Transform (DST) for infinite length signals has been introduced along with its fast implementation. This method allows for low computational cost and enables processing of an infinite-length or large-size signal segment-by-segment while overcoming the boundary effects produced by conventional DST. The algorithm also preserves the absolute-reference phase, making it suitable for real-time signal processing. In this paper, we propose a new formulation of the discrete Orthogonal Stockwell Transform for infinite length signals. Based on the definition, we implement its fast algorithm using FFT. Our proposed scheme can process an infinite signal segment-by-segment, eliminating boundary effects and preserving the absolute-reference phase. Compared to the DST for infinite length signals, the DOST version significantly reduces computational complexity, making it more practical for real-time signal processing.

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: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.003
Threshold uncertainty score0.009

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.003
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.001
Scholarly communication0.0010.002
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0030.001

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 head0.031
GPT teacher head0.321
Teacher spread0.289 · 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 designTheoretical or conceptual
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

Citations1
Published2023
Admission routes1
Has abstractyes

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