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Releases: OpenActuarial/reservingmodels

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v0.1.0

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@github-actions github-actions released this 14 Jul 17:24

0.1.0

First release.

  • Re-export the deterministic reserving primitives from actuarialpy.reserving
    under the reservingmodels namespace (aliases, not copies): ChainLadder,
    completion_factors, apply_completion, develop_ultimate (chain-ladder,
    Bornhuetter-Ferguson, Benktander, Cape Cod), make_completion_triangle,
    Mack standard errors, and the supporting helpers.
  • Add BootstrapODP: the semiparametric over-dispersed-Poisson bootstrap
    (England & Verrall) of the predictive reserve distribution -- estimation
    error by Pearson-residual resampling, process error by a gamma draw.
    Validated against Mack on the Taylor-Ashe triangle (same reserve; dispersion
    phi = 52,601).
  • Add ReserveDistribution with predictive percentiles, VaR, TVaR (ecosystem
    empirical estimators), and a per-origin exhibit.
  • BootstrapODP.sample(size, rng) implements the risksim sampling seam, so a
    reserve model is a portfolio component with no dependency between packages.
  • Add residual diagnostics: pearson_residuals, residual_summary,
    calendar_year_effects.
  • Add integrations.actuarialpy to build a triangle (and a fitted bootstrap)
    from a claims-listing actuarialpy.Experience.
  • Add reference triangles datasets.taylor_ashe() and datasets.raa().