A MapReduce-Based Parallel Frequent Pattern Growth Algorithm for Spatiotemporal Association Analysis of Mobile Trajectory Big Data

Figure 1

Distribution of the GPS points (1,232,048 records) generated by 12,000 taxicabs in Beijing at 00:14:35 AM-01:14:34 AM on 1 November 2012, where the color denotes the density of the points. (a) Data overview in Beijing. (b) Within the 5th Ring Road and (c) the 4th Ring Road of Beijing. Figure reproduced from Xia et al. (2016) [13]. Copyright ©2016 IEEE, with permission.

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