Recursive Slow Feature Analysis for Adaptive Monitoring of Industrial Processes
Why this work is in the frame
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Bibliographic record
Abstract
Recently, a new process monitoring and fault diagnosis method based on slow feature analysis has been developed, which enables concurrent monitoring of both operating point and process dynamics. In this paper, a recursive slow feature analysis algorithm for adaptive process monitoring is put forward to accommodate time-varying processes by updating model parameters and monitoring statistics once a new sample arrives. An important algebraic property of slow feature analysis is first established. We then show that such a property can be violated by online updating with a forgetting factor used, and a remedy is suggested. A novel algorithm based on the rank-one modification and the orthogonal iteration procedure is proposed to recursively adjust the solution to the generalized eigenvalue problem, model parameters, and associated monitoring statistics in a cost-efficient way. In addition, an improved stopping criterion for model updating is proposed based on the statistics relevant to process dynamics, which yields an intelligent maintenance mechanism of monitoring systems. The efficacy of the proposed method is finally evaluated on a real crude heating furnace system.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| 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 it