방법 비교

	Zero-Inflated Model	음이항 회귀
분야	통계학	계량경제학
계열	Regression model	Regression model
기원 연도	1992	2011
창시자	Diane Lambert	Hilbe (textbook treatment); generalized linear model framework
유형	Count regression with excess zeros	Generalized linear model for count data
원전	Lambert, D. (1992). Zero-inflated Poisson regression, with an application to defects in manufacturing. Technometrics, 34(1), 1–14.	Hilbe, J. M. (2011). Negative Binomial Regression (2nd ed.). Cambridge University Press.
별칭	ZIP model, ZINB model, zero-inflated Poisson, zero-inflated negative binomial	NB regression, NB2 regression, negatif binom regresyonu
관련	6	4
요약	A zero-inflated model is a two-component mixture regression designed for count outcomes that contain more zero values than a standard Poisson or negative binomial distribution can accommodate. One component is a binary process that generates structural zeros; the other is a count process that generates both zeros and positive counts.	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.