The research context of this paper refers to bottom-up approaches to crowd dynamics that is, the study of how and where crowds form and move [1]. Several phenomena like crowd aggregation, dispersion and self-organized movement have been observed and studied by multiple disciplines interested to crowds (e.g. physics, sociology, ethology, social and behavioral psychology, building design, urban planning, security management, among others), each one with its specific viewpoint and ontological setting. SCA4CR0WDS is an interdisciplinary research within this context that aims at contributing towards the development of a unifying ontology on crowds allowing the integration of contributions coming from several disciplines and that could be exploited for scientific and applicative issues (e.g. model comparison, validation, calibration).
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