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Paper / 2026SMQ / 80682157141413
PixSim: a calibrated open-source simulator of instant-payment fraud, recovery and interdiction under analyst capacity constraints
Alireza Khatib / Bashir Zeimarani / Carlos Maurício Serodio Figueiredo / Somayeh Mousavinasr
bankingResource overview

PixSim: a calibrated open-source simulator of instant-payment fraud, recovery and interdiction under analyst capacity constraints

Paper2026

by Alireza Khatib, Bashir Zeimarani, Carlos Maurício Serodio Figueiredo, Somayeh Mousavinasr

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banking

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Suggested foundations for credit and counterparty risk and risk measurement and stress. Specialist prerequisites vary by paper.

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  1. Credit Instruments, PD/LGD/EAD, and Rating Migration

    Separate default probability, loss severity and exposure.

  2. Conditional Expectation

    Read conditional default and exposure quantities.

  3. Random Variables and Distributions

    Represent losses as a distribution rather than one forecast.

  4. Expected Shortfall and Other Tail Risk Measures

    Distinguish a loss quantile from the average loss in the tail.

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  1. Threshold Models and the Gaussian Copula for Portfolio Default

    Study dependence between defaults.

  2. CVA and DVA

    Connect exposure and counterparty losses to valuation adjustments.

  3. VaR Estimation in Practice: Variance-Covariance, Historical Simulation, Monte Carlo

    Compare risk estimators and their assumptions.

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