MétaCan
Menu
Back to cohort
Record W3167234986 · doi:10.1080/23248378.2021.1937355

Predicting the effectiveness of supplement time on delay recoveries: a support vector regression approach

2021· article· en· W3167234986 on OpenAlex

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

VenueInternational Journal of Rail Transportation · 2021
Typearticle
Languageen
FieldEngineering
TopicRailway Systems and Energy Efficiency
Canadian institutionsUniversity of Waterloo
FundersNational Natural Science Foundation of China
KeywordsSupport vector machineComputer scienceRegressionRegression analysisData miningMachine learningStatisticsMathematics

Abstract

fetched live from OpenAlex

Investigating the effectiveness of supplement time is a critical method for dispatchers to understand the delay recovery capacity of railway sections and stations, thus improving real-time dispatching efficiency. Based on train operation data of the high-speed railway in China, a support vector regression (SVR) algorithm was employed to investigate the effectiveness of supplement times in railway sections and stations. First, the independent factors were determined, and the hyper-parameters of the SVR model were tuned with the operation data. Then, the performance of the predictive model was tested on the testing dataset. The results show that the predicted delay recovery cases of the model coincide highly with the actual cases. Additionally, the predictive performance of the model under allowable errors illustrates that the accuracy of the model can reach 95.96%, with a 1-minute allowable error. Finally, comparison analyses show that the proposed model outperforms other widely-used delay recovery models.

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)0.001
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: Empirical · Consensus signal: Empirical
Teacher disagreement score0.818
Threshold uncertainty score0.287

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
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 head0.007
GPT teacher head0.224
Teacher spread0.217 · 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