Centro de Documentacion de Fundación MAPFRE - Accelerating the computation of Shapley effects for datasets with many observations

MAP20260006291

Accelerating the computation of Shapley effects for datasets with many observations / Giovanni Rabitti and George Tzougas

Sumario: Shapley effects are enjoying increasing popularity as importance measures. These indices allocate the variance of the quantity of interest among every risk factor, and a risk factor explaining more variance than another one is more important. Recently, Vallarino et al. (ASTIN Bull J IAA, 2023. https://doi.org/10.1017/asb.2023.34) propose a computational strategy for Shapley effects using the idea of cohorts of similar observations. However, this strategy becomes extremely computationally demanding if the dataset contains many observations. In this work we propose a computational shortcut based on design of experiments and clustering techniques to speed up the computational time. Using the well-known French claim frequency dataset, we demonstrate the huge reduction in computational time, without a significant loss of accuracy in the estimation of the Shapley effects

En: European Actuarial Journal. - Cham, Switzerland : Springer Nature Switzerland AG, 2021-2022. - 15/12/2025 Volume 15 Issue 3 - December 2025 , 14 p.

1. Cálculo actuarial . 2. Modelos estadísticos . 3. Big data . 4. Inteligencia artificial . 5. Siniestralidad . 6. Machine learning . I. Tzougas, George . II. Title.