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Record W1967880991 · doi:10.1002/env.716

Using a probabilistic model (pCNEM) to estimate personal exposure to air pollution

2005· article· en· W1967880991 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueEnvironmetrics · 2005
Typearticle
Languageen
FieldEnvironmental Science
TopicAir Quality and Health Impacts
Canadian institutionsUniversity of British Columbia
FundersUniversity of BathEngineering and Physical Sciences Research CouncilNatural Sciences and Engineering Research Council of CanadaUniversity of British ColumbiaDivision of Mathematical SciencesNational Science Foundation
KeywordsProbabilistic logicEnvironmental scienceAir pollutionPollutantPollutionStatistical modelAir pollutantsComputer scienceEconometricsStatisticsMathematicsEcologyMachine learning

Abstract

fetched live from OpenAlex

Abstract This article describes the use of a probabilistic model to estimate personal exposure to airborne pollutants. Such estimates are important when assessing, for example, the potential effects of air pollution on health and in developing related policy. An individual's personal exposure will be determined by local pollution sources which will change throughout the day as the individual's location changes. For this reason, models have been developed that utilize ‘time activity’ patterns to compute the overall exposure to pollutants. The model described here is referred to as ‘pCNEM’ and can be accessed through the WWW. The computational platform is flexible in that it allows users to construct models defining local sources of pollution and emissions in addition to ambient levels. This article demonstrates the construction of such a model, for predicting the exposure to PM 10 of random selected individuals from sub‐populations of Greater London. A case study of working females in the spring and summer of 1997 is presented. Copyright © 2005 John Wiley & Sons, Ltd.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.183
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.002

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.

Opus teacher head0.082
GPT teacher head0.340
Teacher spread0.258 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it