Items where Author is "Tzougas, George"

Zhang, Pengcheng, Chen, Zezhun, Tzougas, George, Calderín–Ojeda, Enrique, Dassios, Angelos ORCID: 0000-0002-3968-2366 and Wu, Xueyuan (2024) Multivariate zero-inflated INAR(1) model with an application in automobile insurance. North American Actuarial Journal. ISSN 1092-0277

Chen, Zezhun Chen, Dassios, Angelos ORCID: 0000-0002-3968-2366 and Tzougas, George (2024) EM estimation for bivariate mixed poisson INAR(1) claim count regression models with correlated random effects. European Actuarial Journal, 14 (1). 225 – 255. ISSN 2190-9733

Chen, Zezhun Chen, Dassios, Angelos ORCID: 0000-0002-3968-2366 and Tzougas, George (2023) INAR approximation of bivariate linear birth and death process. Journal of Applied Statistics, 26 (3). 459 - 497. ISSN 0266-4763

Chen, Zezhun Chen, Dassios, Angelos ORCID: 0000-0002-3968-2366 and Tzougas, George (2023) A first order binomial mixed poisson integer-valued autoregressive model with serially dependent innovations. Journal of Applied Statistics, 50 (2). 352 - 369. ISSN 0266-4763

Tzougas, George and Makariou, Despoina ORCID: 0000-0002-9001-2122 (2022) The multivariate Poisson-Generalized Inverse Gaussian claim count regression model with varying dispersion and shape parameters. Risk Management and Insurance Review, 25 (4). 401 - 417. ISSN 1098-1616

Chen, Zezhun, Dassios, Angelos ORCID: 0000-0002-3968-2366 and Tzougas, George (2022) Multivariate mixed Poisson Generalized Inverse Gaussian INAR(1) regression. Computational Statistics. ISSN 0943-4062

Chen, Zezhun, Dassios, Angelos ORCID: 0000-0002-3968-2366 and Tzougas, George (2022) EM estimation for the bivariate mixed exponential regression model. Risks, 10 (5). ISSN 2227-9091

Tzougas, George, Hong, Natalia and Ho, Ryan (2022) Mixed poisson regression models with varying dispersion arising from non-conjugate mixing distributions. Algorithms, 15 (1). ISSN 1999-4893

Tzougas, George and Pignatelli di Cerchiara, Alice (2021) The multivariate mixed Negative Binomial regression model with an application to insurance a posteriori ratemaking. Insurance: Mathematics and Economics, 101. pp. 602-625. ISSN 0167-6687

Tzougas, George and di Cerchiara, Alice Pignatelli (2021) Bivariate mixed Poisson regression models with varying dispersion. North American Actuarial Journal. ISSN 1092-0277

Makariou, Despoina ORCID: 0000-0002-9001-2122, Barrieu, Pauline ORCID: 0000-0001-9473-263X and Tzougas, George (2021) A finite mixture modelling perspective for combining experts’ opinions with an application to quantile-based risk measures. Risks, 9 (6). ISSN 2227-9091

Tzougas, George and Jeong, Himchan (2021) An expectation-maximization algorithm for the exponential-generalized inverse Gaussian regression model with varying dispersion and shape for modelling the aggregate claim amount. Risks, 9 (1). pp. 1-17. ISSN 2227-9091

Tzougas, George (2020) EM estimation for the Poisson-Inverse Gamma regression model with varying dispersion: an application to insurance ratemaking. Risks, 8 (3). pp. 1-23. ISSN 2227-9091

Tzougas, George and Karlis, Dimitris (2020) An EM algorithm for fitting a new class of mixed exponential regression models with varying dispersion. Astin Bulletin, 50 (2). 555 - 583. ISSN 0515-0361

Tzougas, George, Hoon, W. L. and Lim, J. M. (2019) The negative binomial-inverse Gaussian regression model with an application to insurance ratemaking. European Actuarial Journal, 9 (1). 323 - 344. ISSN 2190-9733

Tzougas, George, Yik, Woo Hee and Mustaqeem, Muhammad Waqar (2019) Insurance ratemaking using the Exponential-Lognormal regression model. Annals of Actuarial Science. 1 - 30. ISSN 1748-4995

Tzougas, George, Vrontos, Spyridon and Frangos, Nicholas (2018) Bonus-Malus systems with two component mixture models arising from different parametric families. North American Actuarial Journal. ISSN 1092-0277

Tzougas, George, Karlis, Dimitris and Frangos, Nicholas (2017) Confidence intervals of the premiums of optimal Bonus Malus Systems. Scandinavian Actuarial Journal, 2018 (2). pp. 129-144. ISSN 0346-1238

Tzougas, George, Vrontos, Spyridon D. and Frangos, Nickolaos E. (2015) Risk classification for claim counts and losses using regression models for location, scale and shape. Variance, 9 (1). pp. 140-157. ISSN 1940-6444

Tzougas, George, Vrontos, Spyridon and Frangos, Nicholas (2014) Optimal Bonus-Malus Systems using finite mixture models. Astin Bulletin, 44 (2). pp. 417-444. ISSN 0515-0361

Tzougas, George and Frangos, Nicholas (2014) The design of an optimal Bonus-Malus System based on the Sichel distribution. In: Silvestrov, Dmitrii and Martin-Löf, Anders, (eds.) Modern Problems in Insurance Mathematics. EAA Series. Springer International (Firm), Cham, Switzerland. ISBN 9783319066523