Jiří Ambros

3 Questions 51 Answers 0 Followers

Questions related from Jiří Ambros

How to estimate elasticity and marginal effects with Generalized Linear Model?

I am using Generalized Linear Models (GLM) to model influence of various explanatory variables on traffic crash frequency. After modelling, it is useful to interpret influence of these variables....

10 April 2015 3,718 6 View

How to assess impact of individual variables from generalized linear model?

I have been developing various regression models for road crash frequency. I use generalized linear models (SPSS GENLIN or SAS GENMOD procedures), negative binomial (NB) distribution, log link...

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How to plan sample size for a crash prediction model?

Can somebody help estimating how many analysis units (number of railway level crossings - RLCs) will I need to build a crash prediction model (safety performance function)? From some past analyses...

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