This paper is focused on a process of identification socio-economic factors affecting mobility of the inhabitants of the South Bohemia region. For the purpose of screening methodology of the classification trees was used. It could be stated that the main factors affecting mobility are economic activity, housing conditions, emotional attitude to place, and satisfaction with traffic connection. For numeric evaluation programming environment R with rpart routine was used. This routine implements methodology is closer to the traditional CART version of trees due to Brieman et al. (1998).
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