Two‐part models are quite well established in the economic literature, since they resemble
accurately a principal‐agent type model, where homogeneous, observable, counted …

The negative binomial (NB) model and the generalized Poisson (GP) model are common
alternatives to Poisson models when overdispersion is present in the data. Having …

For longitudinal data where the response and time‐dependent predictors within each
individual are measured at distinct time points, traditional longitudinal models such as …

Count data often exhibit overdispersion and/or require an adjustment for zero outcomes with
respect to a Poisson model. Zero-modified Poisson (ZMP) and zero-modified generalized …

The aim of this work was to model the vertical location and number of branch primordia
(buds) on the leader of lodgepole pine (Pinus contorta Doug. ex Loud.) trees in central …

For longitudinal data where the response and time-dependent predictors within each
individual are measured at distinct time points, traditional longitudinal models such as …

The concept of zero-inflation is now well established, and several software packages exist
that fit zero-inflated models. Whilst there is some mention of zero-deflation in the literature …

While discrete zero-inflated and zero-deflated models are fairly well known, continuous zero-
modified models are mostly limited to the zeroinflated case in the literature, where they are …