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• W3046192085 abstract "In this article, we apply non-convex regularization methods in order to obtain stable estimation of loss development factors in insurance claims reserving. Among the non-convex regularization methods, we focus on the use of the log-adjusted absolute deviation (LAAD) penalty and provide discussion on optimization of LAAD penalized regression model, which we prove to converge with a coordinate descent algorithm under mild conditions. This has the advantage of obtaining a consistent estimator for the regression coefficients while allowing for the variable selection, which is linked to the stable estimation of loss development factors. We calibrate our proposed model using a multi-line insurance dataset from a property and casualty insurer where we observed reported aggregate loss along accident years and development periods. When compared to other regression models, our LAAD penalized regression model provides very promising results." @default.
• W3046192085 created "2020-08-03" @default.
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• W3046192085 date "2020-04-16" @default.
• W3046192085 modified "2023-09-23" @default.
• W3046192085 title "A non-convex regularization approach for stable estimation of loss development factors" @default.
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• W3046192085 doi "https://doi.org/10.48550/arxiv.2004.08032" @default.
• W3046192085 hasPublicationYear "2020" @default.
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