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Time Series Classification Using Convolutional Kernel and Adaptive Dynamic Thresholding

2024· article· en· W4402156018 on OpenAlex
Alireza Keshavarzian, Joyce Wu, Chung‐Wai Chow, Shahrokh Valaee

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

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicTime Series Analysis and Forecasting
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsComputer scienceThresholdingSeries (stratigraphy)Kernel (algebra)Artificial intelligencePattern recognition (psychology)Time seriesMachine learningMathematicsImage (mathematics)

Abstract

fetched live from OpenAlex

Time series classification is a challenging and essential task in many domains such as finance, healthcare, and industrial systems. Traditional methods often struggle with the complexity of multivariate time-series data and the need for effective feature selection. To address these issues, we propose a novel approach incorporating the Metropolis-Hastings algorithm within a Markov Chain Monte Carlo (MCMC) framework for optimized feature selection. Within the inner workings of the Metropolis-Hastings algorithm, we utilize convolutional kernels and randomized threshold exceedance rates for robust feature extraction. To further enrich the diversity and efficacy of the feature set, we seamlessly integrate Locality-Sensitive Hashing (LSH) techniques into the Metropolis-Hastings framework. As a result, our method not only sets a new standard for efficiency in time-series classification but also surpasses existing state-of-the-art methods across a diverse range of datasets.

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 categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.993
Threshold uncertainty score0.298

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
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 head0.029
GPT teacher head0.252
Teacher spread0.223 · 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

Quick stats

Citations1
Published2024
Admission routes1
Has abstractyes

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