{"ID":2888430,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2507.23646","arxiv_id":"2507.23646","title":"Information geometry of Lévy processes and financial models","abstract":"We develop the information geometry of Lévy processes. Deriving $α$-divergences directly in terms of the Lévy triplets of the Lévy processes, we identify Fisher information matrix and $α$-connection on the statistical manifold. In addition, we discuss statistical implications of this information geometry, including bias reduction estimation and Bayesian predictive priors. Several Lévy processes, broadly used for financial modeling such as tempered stable processes, the CGMY model, variance gamma processes, and the Merton model, are investigated through their differential-geometric structures as illustrative examples.","short_abstract":"We develop the information geometry of Lévy processes. Deriving $α$-divergences directly in terms of the Lévy triplets of the Lévy processes, we identify Fisher information matrix and $α$-connection on the statistical manifold. In addition, we discuss statistical implications of this information geometry, including bia...","url_abs":"https://arxiv.org/abs/2507.23646","url_pdf":"https://arxiv.org/pdf/2507.23646v3","authors":"[\"Jaehyung Choi\"]","published":"2025-07-31T15:24:16Z","proceeding":"math.ST","tasks":"[\"math.ST\",\"cs.IT\",\"math.DG\",\"math.PR\",\"q-fin.MF\"]","methods":"[]","has_code":false}