Public transit improvement and property values : a canadian case study
Bibliographic record
Abstract
The study relies on two major data sources on existing house sales in the QMA : the first one is based on Quebec City's assessment roll (1986-1996) period while the second one (1997-2004) rests on the Quebec Real Estate Board databank. Both sources provide reliable information on sale prices and conditions, unit location and property characteristics. Some 11,500 repeat sales are operated through a regional GIS which also includes detailed information on the local bus network; a before-after hedonic estimation approach is resorted to. Findings suggest that the change in mass transit modal share between sale and resale is most influential and impacts positively on the dependent variable. Moreover, houses centrally located in areas where the MT share rose benefited from an additional premium following the introduction of the Métrobus service while the latter was detrimental to properties located in the extended corridors ₁ i.e. in the suburban areas of the city. This suggests that the extending the Métrobus service to peripheral areas of the city has turned into a negative externality for local residents for whom mass transit is not an adequate alternative to the car.
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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 | 0.001 |
| Bibliometrics | 0.002 | 0.006 |
| Science and technology studies | 0.005 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| 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 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".