Bibliographic record
Abstract
Between 1990 and 2003, four new urban rail lines, totalling 723 miles, were inaugurated by MTA in Los Angeles (LA), California, USA. A fifth light rail line is under construction. Part of the existing freight railway network in the greater LA area was upgraded to commuter rail standards, becoming the Metrolink network. Metrolink was inspired by Go Transit in Toronto, CalTrain in San Francisco, TriRail in Miami and the 1996 Trinity Railway Express connecting Dallas with Fort Worth. Metrolink started in 1992 with a network of three lines radiating from Union Station. These are the Ventura County Line, the San Bernardino Line and the Santa Clarita Line. Most have been extended since 1992. Earthquakes in 1994 resulted in a growth in passengers and increased political support for commuter rail and increased subsidies, allowing new stations to be added and the Orange County Line to be upgraded to Metrolink standards. In 1995, Riverside Line was added and in 1996, the inland Empire-Orange County Line was added. In 2009, the Perris Valley Line will be added to the network. The present fleet comprises 38 locomotives and 143 double-deck carriages built by Bombardier. An order for 87 double-deck, push-pull coaches has been approved.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.031 | 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".