Distilling Meta Knowledge on Heterogeneous Graph for Illicit Drug Trafficker Detection on Social Media - Supplementary Material

In the supplementary material, we first introduce the details of data preparation. MetaHG and discuss the potential ethical issues as well as the limitation of our paper. Regular users are those who are irrelevant to drug trafficking activities. Note that mixture traffickers are those who sell at least two groups of drugs. Table 1: The different types of drug traffickers and their related drugs.Trafficker Type Drugs Stimulants trafficker cocaine, meth (crystal meth), amphetamine, methamphetamine, weed Hallucinogens trafficker LSD, MDT, MDMA, ketamine, magic mushrooms, mescaline, hoasca Opioids trafficker oxycodone, hydrocodone, codeine, morphine, fentanyl, meperidine Hidden trafficker advertise drugs mostly by leaving the contact information to others' posts Mixture trafficker sell at least two different groups of drugs (e.g., cocaine, codeine, and LSD) We employ five sets of baseline models (twenty) in this paper.