Yizheng ChenRobust Trees for SecurityTree models are widely used for security, such as detecting malicious autonomous system, social engineering, malware distribution…4 min read·Feb 28, 2021--1--1
Yizheng ChenMonotonic Malware ClassifiersMicrosoft has deployed their first monotonic classifier to detect malware attacks since late 2018. The attacker cannot evade the model by…5 min read·Dec 18, 2020----
Yizheng ChenGmail’s Malicious Document Classifier Can Still Be Trivially EvadedGmail has improved its malicious document classifier using deep learning recently. It can now detect many insertion-only attacks that…3 min read·Dec 10, 2020----
Yizheng ChenZ3 timed out? Try GurobiSAT problem is a particular case of 0–1 Integer Linear Program (ILP). It can be formulated as a 0-1 ILP feasibility problem, with no…1 min read·Nov 21, 2020----
Yizheng ChenHow XGBoost Enforces Global Monotonicity for FeaturesXGBoost can train global monotonically nondecreasing or nonincreasing prediction function for user-specified features, in the Gradient…2 min read·Nov 19, 2020----