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Record W3148933547 · doi:10.7202/1076124ar

Nouvelle réglementation internationale du risque de marché : rôles de la VaR et de la CVaR dans la validation des modèles

2021· article· fr· W3148933547 on OpenAlexvenueno aff
Samir Saissi Hassani, Georges Dionne

Bibliographic record

VenueAssurances et gestion des risques · 2021
Typearticle
Languagefr
FieldEconomics, Econometrics and Finance
TopicFinancial Risk and Volatility Modeling
Canadian institutionsnot available
Fundersnot available
KeywordsCVARPolitical scienceMathematicsExpected shortfallEconomicsRisk management

Abstract

fetched live from OpenAlex

Dans cette note, nous modélisons les nouveaux aspects quantitatifs de la gestion du risque de marché des banques que Bâle a décidé en 2016 et mis en vigueur en janvier 2019. Le risque de marché est mesuré par la valeur à risque conditionnelle, ou CVaR, à un degré de confiance de 97,5 %. Le backtest réglementaire reste, en grande partie, basé sur la VaR à 99 %. De plus, à titre de procédures statistiques supplémentaires comme suggéré par Bâle, des backtests complémentaires sur la VaR et la CVaR doivent être effectués. Nous appliquons ces tests sur différentes distributions paramétriques et utilisons des mesures non paramétriques de la CVaR, dont la CVaR- et la CVaR+ comme compléments de validation des distributions utilisées. Nos données sont relatives à une période de turbulences extrêmes des marchés. Avec huit distributions paramétriques mises à l’épreuve par ces données, nos résultats montrent que l’information obtenue sur leurs performances empiriques est très liée aux conclusions des backtests des modèles.

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)0.014
metaresearch head score (Gemma)0.043
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.023
Threshold uncertainty score0.077

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0140.043
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.002
Bibliometrics0.0010.001
Science and technology studies0.0010.002
Scholarly communication0.0050.003
Open science0.0020.001
Research integrity0.0010.004
Insufficient payload (model declined to judge)0.0050.001

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 head0.036
GPT teacher head0.289
Teacher spread0.253 · 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 designSimulation or modeling
Domainnot available
GenreMethods

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".

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Citations1
Published2021
Admission routes1
Has abstractyes

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