Bibliographic record
Abstract
I am delighted to welcome Dr Ke-Li Xu to the editorial board of the Journal of Time Series Analysis. Ke-Li joins as an Associate Editor with effect from 1st July 2025. Ke-Li obtained his PhD from Yale University in 2007 and is currently Professor of Economics at Indiana University Bloomington, a position he has held since 2021. The main theme of his research is to design statistical estimation and inference methods for economic models that accommodate features such as endogeneity, nonlinearity, heterogeneity, and persistence, without imposing strong constraints on the underlying data generating process. Before joining Indiana University, Ke-Li held positions at Texas A&M University and at the University of Alberta, Canada. Ke-Li is a Fellow of the Journal of Econometrics and a recipient of the Multa Scripsit Award from Econometric Theory. He is currently an Associate Editor of the Journal of Business and Economic Statistics and of Econometric Reviews. He also served as a Panelist for the National Science Foundation (NSF), Economics Program. The author declares no conflicts of interest.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot 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.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.006 | 0.043 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.002 |
| Bibliometrics | 0.004 | 0.002 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.009 | 0.004 |
| Open science | 0.003 | 0.002 |
| Research integrity | 0.008 | 0.011 |
| Insufficient payload (model declined to judge) | 0.113 | 0.092 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".