scholarly journals An Application of the Generalized Poisson Model for Over Dispersion Data on The Number of Strikes Between 1984 and 2017

2020 ◽  
Author(s):  
Öznur İŞÇİ GÜNERİ ◽  
Burcu DURMUŞ
Keyword(s):  
Poisson Model ◽  
Generalized Poisson ◽  
Dispersion Data ◽  
Over Dispersion ◽  
Generalized Poisson Model

Migration Models Incorporating Interdependence of Movers

1995 ◽  
Vol 27 (9) ◽  
pp. 1493-1502 ◽  
Author(s):  
R Flowerdew ◽  
P J Boyle
Keyword(s):  
Goodness Of Fit ◽  
Spatial Interaction ◽  
Local Level ◽  
Poisson Model ◽  
Data Set ◽  
Generalized Poisson ◽  
Spatial Interaction Models ◽  
Generalized Poisson Model ◽  
Generalized Cost ◽  
Number Of Individuals

Models of migration between regions are often based on the assumption that individual moves can be modelled by a Poisson distribution whose parameter is a function of origin and destination characteristics, and generalized cost; this is true of Poisson regression models and spatial interaction models. The Poisson assumption is that each individual acts independently from others making the same move. In fact, migration is usually engaged in by household groups, not independent individuals, making the Poisson assumption invalid. It is possible instead to construct a model in which the probability of a household moving is given by a Poisson model and the number of individuals in a moving household is given by an observed household-size distribution. This generalized Poisson model is explained and fitted to a set of data on local-level migration within the English county of Hereford and Worcester. However, the sparse nature of the data set raises problems in assessing goodness of fit because the deviance value is unusually low. This is tackled here with a simulation methodology.

Testing Approaches for Overdispersion in Poisson Regression versus the Generalized Poisson Model

2007 ◽  
Vol 49 (4) ◽  
pp. 565-584 ◽  
Author(s):  
Zhao Yang ◽  
James W. Hardin ◽  
Cheryl L. Addy ◽  
Quang H. Vuong
Keyword(s):  
Poisson Regression ◽  
Poisson Model ◽  
Generalized Poisson ◽  
Generalized Poisson Model
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