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Figure 3 | EPJ Data Science

Figure 3

From: Spatiotemporal correlations of handset-based service usages

Figure 3

Schematic diagram for deriving temporal boundaries from a sequence of cell records. Temporal boundaries {( c k , t k ( s ) , t k ( e ) )} (colored boxes) are derived from a sequence of cell records {( c k , t k )} (vertical black lines). It is assumed that the user stays in the cell c k from the moment of t k ( s ) to t k ( e ) . See the text for details.

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