Inferring Drainage Conditions during In Situ Cone Penetration
Bibliographic record
Abstract
Different data reduction formulas are used with drained, partially drained, and undrained piezocone test (CPTu) data. In practice, drainage conditions are inferred based on a characterized soil behavior type (SBT) from the CPTu profile. Alternatively, drainage conditions around the cone probe can be confirmed from CPTu pore-pressure dissipation (PPD) tests. This alternative is time-consuming and only provides confirmation of the drainage conditions at a discrete point in the profile. This paper reports on the relationship between SBT indices and drainage conditions over a dataset of 2792 PPD tests. We evaluated the predictive capabilities of the SBT indices to infer undrained behavior using a receiver-operator characteristic (ROC) curve. The area under the ROC curve was 75–76%, in-between a perfect metric (100%) and an uninformative metric (50%).
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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 | 0.000 | 0.000 |
| 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".