A new mortality model based on a mixture distribution function is proposed. We mix a half-normal distribution with a generalization of the skew-normal distribution. As a result, we get a six-parameter distribution function that has a good fit with a wide variety of mortality patterns. This mixture model is fitted to several mortality data schedules and compared with the Siler (five-parameter) and Heligman-Pollard (eight-parameter) models. Our proposal serves as a convenient compromise between the Heligman-Pollard model (which ensures a good fit with data but is often overparameterized) and the Siler model (which is more compact but fails to capture accident humps').
Stefano Mazzuco (Corresponding)
|Data di pubblicazione:||2018|
|Titolo:||A mortality model based on a mixture distribution function|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1080/00324728.2018.1439519|
|Appare nelle tipologie:||2.1 Articolo su rivista |
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