A Geowiki for Participatory Mobility

In this paper we present MoNa-map, a collaborative mapping system for monitoring temporary mobility barriers. This type of temporary data is known to exhibit a high change rate and, as a consequence, some existing barriers will not be mapped (false negatives) while some barrier which ceased to exist will still appear on the map (false positives). Our approach addresses the problem of balancing the two types of errors with a state-based data model that supports data aging and provides mechanisms to actively inform users about mobility barriers needing validation. The approach is evaluated in a simulation study which compares MoNa-map to simpler models.