Vertaile menetelmiä

	Credibility Theory	Negatiivinen binomiregressio
Tieteenala	Vakuutusmatematiikka	Ekonometria
Menetelmäperhe	Regression model	Regression model
Syntyvuosi	1967	2011
Kehittäjä	Hans Bühlmann	Hilbe (textbook treatment); generalized linear model framework
Tyyppi	Weighted linear blend of individual and collective experience	Generalized linear model for count data
Alkuperäislähde	Bühlmann, H. (1967). Experience rating and credibility. ASTIN Bulletin, 4(3), 199–207.	Hilbe, J. M. (2011). Negative Binomial Regression (2nd ed.). Cambridge University Press.
Rinnakkaisnimet	Bühlmann Credibility, Experience Rating, Linear Credibility Estimator, Güvenilirlik Teorisi	NB regression, NB2 regression, negatif binom regresyonu
Liittyvät	3	4
Tiivistelmä	Credibility Theory is an actuarial framework for estimating the pure premium of an individual risk by blending its own observed loss experience with the collective (portfolio) mean. Introduced by Hans Bühlmann in 1967, the method derives the optimal linear combination—the credibility-weighted premium—that minimises mean squared error. It extends classical experience rating to a rigorous statistical footing rooted in Bayesian and linear estimation principles.	Negative Binomial Regression is a generalized linear model for count outcomes that extends Poisson regression to handle overdispersion, where the variance of the counts exceeds their mean. Developed in the GLM tradition and treated in depth by Hilbe (2011), it adds a dispersion parameter so that inference stays valid when Poisson would understate the spread of the data.