Investigating the Effects of COVID-19 Pandemic on the Perception of Residential Accessibility in Greater Toronto and Hamilton Area
Bibliographic record
Abstract
This paper investigates the changes caused by the COVID-19 pandemic on households’ perceived utility of the accessibility of their residence in the Greater Toronto and Hamilton Area (GTHA). The paper considers several neighborhood and dwelling attributes and fuses those with property price data from mid-March 2019 to mid-March 2021 to analyze changes in housing trends before and during the COVID-19 pandemic. Two mixed geographically weighted regression (MGWR) models are estimated for the year before the start of the pandemic and the year during the pandemic to address spatial autocorrelation and non-stationarity in price data. The empirical models reveal new patterns in accessibility perception for some factors, including accessibility to regional subway and inter-regional rail transit. This study also contributes to the literature of MGWR modeling by assessing the capacity of the model through validation procedures. Estimation is performed on randomly selected samples from the population to compare the errors with the population-based model and a traditional hedonic price model. The findings suggest that the application of MGWR is restricted to cases where price data are abundant.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".