Reliability inference for dual stress factors accelerated degradation test based on the nonlinear Wiener process with three-source variability
Bibliographic record
Abstract
.Accelerated degradation test plays a prominent role in reliability assessment and lifetime prediction for highly reliable products. The literature on accelerated degradation modeling primarily focuses on single stress factor situations. Therefore, this article proposes a nonlinear Wiener process-based dual stress factors accelerated degradation model with interaction, which simultaneously accounts for temporal variability, individual variability, and measurement variability. The maximum likelihood estimates (MLEs) of the model parameters are obtained using the profile likelihood approach and the Nelder-Mead algorithm, along with the MLEs for the reliability metrics of interest under normal operating conditions. We then provide bootstrap confidence intervals of the model parameters using the parametric percentile bootstrap method. The performance of the proposed method is assessed through the Monte Carlo simulation. Finally, a real-world example is presented to illustrate the application of our method.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.009 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
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 teacher head, 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".