Build a Safe Bridge over Worked Coal Mines
Bibliographic record
Abstract
Northeast Anthony Henday Drive (NEAHD) is the last quadrant of Edmonton Ring Road. It was tendered as a public private partnership (P3) project in 2012. It consists of 39 km highway, 12 interchanges, and 47 bridges, out of which nine bridges were potentially influenced by coal mines that ceased operation in 1952. History of the existing bridges and geotechnical investigations demonstrated a high risk of subsidence in this abandoned coal mine area. A subsidence can cause differential settlement, lateral movement, and twisting to a bridge. Developing a foundation solution that can accommodate these three dimensional movements, such that in the event of subsidence, a catastrophic failure is avoided, is the challenge. The philosophy adopted for the NEAHD Project was to design a bridge to incur reparable levels of damage should coal mine subsidence occur, without catastrophic failure to the bridge. This paper presents details how this philosophy was developed, agreed, and implemented for a large P3 project.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.005 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.024 | 0.008 |
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".