Zero-state Markov switching count-data models: An empirical assessment
نویسندگان
چکیده
منابع مشابه
Zero-state Markov switching count-data models: an empirical assessment.
In this study, a two-state Markov switching count-data model is proposed as an alternative to zero-inflated models to account for the preponderance of zeros sometimes observed in transportation count data, such as the number of accidents occurring on a roadway segment over some period of time. For this accident-frequency case, zero-inflated models assume the existence of two states: one of the ...
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In this study, two-state Markov switching count data models are proposed as an alternative to zero-inflated models, in order to account for preponderance of zeros typically observed in accident frequency data. Similar to zero-inflated models, two-state Markov switching models assume an existence of two states of roadway safety. One of the states is a zero-accident state, which is safe. The othe...
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ژورنال
عنوان ژورنال: Accident Analysis & Prevention
سال: 2010
ISSN: 0001-4575
DOI: 10.1016/j.aap.2009.07.012