- Tytuł:
- The Complex-Number Mortality Model (CNMM) based on orthonormal expansion of membership functions
- Autorzy:
-
Szymański, Andrzej
Rossa, Agnieszka - Powiązania:
- https://bibliotekanauki.pl/articles/1827532.pdf
- Data publikacji:
- 2021-09-06
- Wydawca:
- Główny Urząd Statystyczny
- Tematy:
-
exponential membership functions
Legendre’s polynomials
mortality modelling
orthonormal system - Opis:
- The paper deals with a new fuzzy version of the Lee-Carter (LC) mortality model, in which mortality rates as well as parameters of the LC model are treated as triangular fuzzy numbers. As a starting point, the fuzzy Koissi-Shapiro (KS) approach is recalled. Based on this approach, a new fuzzy mortality model - CNMM - is formulated using orthonormal expansions of the inverse exponential membership functions of the model components. The paper includes numerical findings based on a case study with the use of the new mortality model compared to the results obtained with the standard LC model.
- Źródło:
-
Statistics in Transition new series; 2021, 22, 3; 31-57
1234-7655 - Pojawia się w:
- Statistics in Transition new series
- Dostawca treści:
- Biblioteka Nauki
Artykuł