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Record W2994584369 · doi:10.7202/1065857ar

Les médias sociaux comme prédicteurs de la criminalité urbaine

2019· article· fr· W2994584369 on OpenAlexaffvenueabout
S. Da C. M. Silva, Rémi Boivin, Francis Fortin

Bibliographic record

VenueCriminologie · 2019
Typearticle
Languagefr
FieldSocial Sciences
TopicCrime Patterns and Interventions
Canadian institutionsUniversité de Montréal
Fundersnot available
KeywordsHumanitiesPolitical scienceArt

Abstract

fetched live from OpenAlex

La présente étude tente de déterminer l’importance d’analyser les crimes à des niveaux spatiaux et temporels de plus en plus précis. De même, une nouvelle source de données issue des médias sociaux, les messages sur Twitter, est utilisée afin de prédire la répartition des crimes à Montréal en estimant la population réelle sur le territoire, et en la caractérisant selon son humeur. Des modèles multiniveaux Poisson sont utilisés afin de prédire les crimes contre la personne et les crimes contre les biens agrégés au segment de rue selon l’heure de la journée. Les résultats montrent qu’il est primordial pour toute analyse de la criminalité à Montréal de tenir compte de la variance de la criminalité en ce qui a trait aux micro-endroits et d’y incorporer des périodes intrajournalières. La caractérisation de la population réelle de la ville a été considérée comme une avenue prometteuse pour la prédiction des crimes. Cette étude propose que l’utilisation des données de Twitter soit une avenue d’analyse concluante, mais qui reste encore à approfondir.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.013
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.146
Threshold uncertainty score0.290

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.013
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0030.003
Science and technology studies0.0010.001
Scholarly communication0.0030.002
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0070.001

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 head0.696
GPT teacher head0.521
Teacher spread0.175 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations1
Published2019
Admission routes3
Has abstractyes

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