Temporal and geographic variation in aeroallergen measurements across four Canadian cities from 2008-2012
Bibliographic record
Abstract
Fungal spores and pollen from trees, grasses, and weeds are associated with outdoor environmental allergies in Canada.These aeroallergens typically have a distinct temporal pattern across geographical regions.This study describes seasonal and geographic variation in aeroallergens from 2008-2012 in the Canadian cities of Vancouver, Edmonton, Winnipeg, and Toronto.The study period and study locations were chosen to characterize the potential aeroallergen exposures of participants in the Canadian Healthy Infant Longitudinal Development (CHILD) birth cohort.Seasonal exposures in Vancouver were the longest for every group of aeroallergens, except grasses.Vancouver was also the highest for the trees pollen.Total fungal spore concentrations were higher in Edmonton, Winnipeg, and Toronto than in Vancouver.The differences recorded in this study across geographical regions may be significant for the CHILD participants if they lead to distinct and clinically important windows of exposure for infant immune response and subsequent differential risk of allergenic disease.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.005 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".