This is the kind of research that helps to make the internet censorship in China (i.e. the Great Fire Wall) possible...
Here is another recent work published by the first author, "Identifying Tor Anonymous Traffic Based on Gravitational Clustering Analysis", http://ieeexplore.ieee.org/document/8048117/
I just do not understand what good such researches would do to regular people living in China? And yet, it has been funded by the public money.
