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Titel:

Zero-inflated generalized Poisson models with regression effects on the mean, dispersion and zero-inflation level applied to patent outsourcing rates

Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Czado, C.; V., Erhardt; A., Min; S., Wagner
Nicht-TUM Koautoren:
ja
Kooperation:
national
Abstract:
This paper focuses on an extension of zero-inflated generalized Poisson (ZIGP) regression models for count data. We discuss generalized Poisson (GP) models where dispersion is modelled by an additional model parameter. Moreover, zero-inflated models, in which overdispersion is assumed to be caused by an excessive number of zeros, are discussed. In addition to ZIGP models considered by several authors, we now allow for regression on the overdispersion and zero-inflation parameters. Consequently,...     »
Intellectual Contribution:
Discipline-based Research
Zeitschriftentitel:
Statistical Modelling
Jahr:
2007
Band / Volume:
7
Heft / Issue:
2
Seitenangaben Beitrag:
125-153
Reviewed:
ja
Sprache:
en
Semester:
SS 02
Format:
Text
Key publication:
Nein
Peer reviewed:
Ja
International:
Ja
Book review:
Nein
commissioned:
not commissioned
Professional Journal:
Nein
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