Results 21 to 30 of about 227,019 (268)

Alleviating Class Imbalance in Actuarial Applications Using Generative Adversarial Networks

Risks, 2021
To build adequate predictive models, a substantial amount of data is desirable. However, when expanding to new or unexplored territories, this required level of information is rarely always available.
Kwanda Sydwell Ngwenduna, Rendani Mbuvha
doaj   +1 more source

Sex‐dependent effects of parental age on offspring fitness in a cooperatively breeding bird

Evolution Letters, Volume 6, Issue 6, Page 438-449, December 2022., 2022
Abstract Parental age can have considerable effects on offspring phenotypes and health. However, intergenerational effects may also have longer term effects on offspring fitness. Few studies have investigated parental age effects on offspring fitness in natural populations while also testing for sex‐ and environment‐specific effects.
Alexandra M. Sparks, Martijn Hammers, Jan Komdeur, Terry Burke, David S. Richardson, Hannah L. Dugdale   +5 more
wiley   +1 more source

Modelling Motor Insurance Claim Frequency and Severity Using Gradient Boosting

Risks, 2023
Modelling claim frequency and claim severity are topics of great interest in property-casualty insurance for supporting underwriting, ratemaking, and reserving actuarial decisions. Standard Generalized Linear Models (GLM) frequency–severity models assume
Carina Clemente, Gracinda R. Guerreiro, Jorge M. Bravo   +2 more
doaj   +1 more source

Robust heavy-tailed versions of generalized linear models with applications in actuarial science [PDF]

Computational Statistics & Data Analysis, 194, 1-16 (2024), 2023
Generalized linear models (GLMs) form one of the most popular classes of models in statistics. The gamma variant is used, for instance, in actuarial science for the modelling of claim amounts in insurance. A flaw of GLMs is that they are not robust against outliers (i.e., against erroneous or extreme data points).
arxiv   +1 more source

Long‐term follow‐up and health‐related quality of life among cancer survivors with stage IEA orbital‐type lymphoma after external photon‐beam radiotherapy: Results from a longitudinal study

Hematological Oncology, Volume 40, Issue 5, Page 922-929, December 2022., 2022
Abstract We assessed the long‐term outcomes and treatment‐related adverse effects of patients with Stage I, “orbital‐type” lymphomas that were uniformly treated with photons. All consecutive patients diagnosed with low‐grade, Ann Arbor Stage IEA orbital lymphoma treated between 1999 and 2020 at our department were retrospectively reviewed.
Christian Hoffmann, Philipp Rating, Nikolaos Bechrakis, Anja Eckstein, Ekaterina Sokolenko, Leyla Jabbarli, Henrike Westekemper, Christopher Mohr, Claus Schmeling, Andreas Huettmann, Julia von Tresckow, Sophia Göricke, Cornelius Deuschl, Patricia Johansson, Christoph Poettgen, Thomas Gauler, Nika Guberina, Sourour Moliavi, Martin Stuschke, Maja Guberina   +19 more
wiley   +1 more source

Modeling Vehicle Insurance Loss Data Using a New Member of T-X Family of Distributions

Journal of Statistical Theory and Applications (JSTA), 2020
In actuarial literature, we come across a diverse range of probability distributions for fitting insurance loss data. Popular distributions are lognormal, log-t, various versions of Pareto, log-logistic, Weibull, gamma and its variants and a generalized ...
Zubair Ahmad, Eisa Mahmoudi, Sanku Dey, Saima K. Khosa   +3 more
doaj   +1 more source

Machine Learning in P&C Insurance: A Review for Pricing and Reserving

Risks, 2020
In the past 25 years, computer scientists and statisticians developed machine learning algorithms capable of modeling highly nonlinear transformations and interactions of input features.
Christopher Blier-Wong, Hélène Cossette, Luc Lamontagne, Etienne Marceau   +3 more
doaj   +1 more source

The development of an extended Weibull model with applications to medicine, industry and actuarial sciences [PDF]

Sci Rep
Muhammad Imran, Najwan Alsadat, M. H. Tahir, Farrukh Jamal, Mohammed Elgarhy, Hijaz Ahmad, Arne Johannssen   +6 more
openalex   +2 more sources

Age patterns of net migration and urbanisation dynamics across European municipalities

Population, Space and Place, Volume 29, Issue 1, January 2023., 2023
Abstract Across the European Union (EU) Local Administrative Units (LAUs), populations are experiencing persisting differences in their age structures that can only be interpreted accounting for migration and mobility components. Yet, in the absence of census data, migration patterns of local populations are not available from EU‐official statistics ...
Daniela Ghio, Claudio Bosco, Fabrizio Natale, Jan Loeschner, Anne Goujon   +4 more
wiley   +1 more source

Modelling Customs Revenue in Ghana Using Novel Time Series Methods

Applied Computational Intelligence and Soft Computing, 2022
Governments across the world rely on their Customs Administration to provide functions that include border security, intellectual property rights protection, environmental protection, and revenue mobilisation amongst others.
Diana Ayorkor Agbenyega, John Andoh, Samuel Iddi, Louis Asiedu   +3 more
doaj   +1 more source