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European Transport Research Review

An Open Access Journal

Fig. 4 | European Transport Research Review

Fig. 4

From: On how to incorporate public sources of situational context in descriptive and predictive models of traffic data

Fig. 4

Multi-dimensional schema where each context data source is stored in a dedicated dimension, and traffic records are stored in fact tables. Associations between a fact entry and the corresponding entries for each context dimension are efficiently established by assessing the location (trajectory) and timestamp (time interval) of a traffic record against the spatiotemporal footprint of a context entry (e.g. public event, weather record, interdiction)

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