Fig. 4
From: Geolocation of covert communication entity on the Internet for post-steganalysis
The CDF (cumulative distribution function) of geolocation error under different training set sizes and thresholds. The red dashed line, blue dot line, and the black solid line indicate the cumulative error distribution of all neural networks formed by the training sets with the landmarks greater than 100,300 and 500 in each training set for the corresponding entities geolocation, respectively. a Threshold is 0.9. b Threshold is 0.8. c Threshold is 0.7