Figure 8
Cumulative Distribution Function (CDF) of the difference of the future probability 
to the past probability 
of the near likely node under the case of the average number of neighbors is 15 in walking scenario. Positive difference (0.2, 0.2)Positive difference (0.4, 0.2)Negative difference (0.2, 0.2)Negative difference (0.4, 0.2)