Custom models work better for op risks, research finds

Bayesian approach touted for mis-selling and other management failures

Made-to-measure models beat Basel's buckets, paper argues

One-size-fits-all models are inferior to custom-built alternatives when estimating specific operational risks, according to new research. The findings apply particularly to the dangers arising from internal management failures, such as payouts for the mis-selling of retail financial products.

In the UK, banks have paid a combined £24.8 billion over the past five years for the mis-selling of payment protection insurance to retail borrowers.

In a forthcoming paper for the Journal of Operational