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Figure 9 | EPJ Data Science

Figure 9

From: Measuring economic activity in China with mobile big data

Figure 9

Box office fraud detection. We selected 30 POI of suspected cinemas (A) and another 30 cinema POI as a control group (B). The forecasting error for the control group was small and stable, whereas for the suspected cinema set, there was a sharp increase in the forecasting error from August 25 to September 16 (marked by the grey box). Such an anomaly indicates a high probability of box office fraud.

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