ANN output updating of lumped conceptual rainfall-runoff forecasting models
Why this work is in the frame
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Bibliographic record
Abstract
Artificial neural networks (ANNs) are tested for the output updating of one-day-ahead and three-day-ahead streamflow forecasts derived from three lumped conceptual rainfall-runoff (R-R) models: the GR4J, the IHAC and the TOPMO. ANN output updating proved superior to Yang and Michel's (2000) parameter updating scheme and to the 'simple' output updating scheme, which always replicates the last observed forecast error. In fact, ANN output updating was able to compensate for large differences in the initial performance of the three tested lumped conceptual R-R models, which the other tested updating approaches could not achieve. This is mainly implemented by considering input vectors usually exploited for ANN R-R modeling such as previous rainfall and streamflow observations, in addition to the previous observed error. For one-day-ahead forecasts, the performance of all three lumped conceptual R-R models, used in conjunction with ANN output updating, was equivalent to that of the ANN R-R model. For three-day-ahead forecasts, the performance of the ANN-output-updated conceptual models was even superior to that of the ANN R-R model, revealing that the conceptual models are probably performing some tasks that the ANN R-R model cannot map. However, further testing is needed to substantiate this last statement.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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