Lei Zhao

Efficient secure similarity computation on encrypted trajectory data

2015

Outsourcing database to clouds is a scalable and cost-effective way for large scale data storage, management, and query processing. Trajectory data contain rich spatio-temporal relationships and reveal many forms of individual sensitive information (e.g., home …

A Novel Practical Method to Classify Scholars Based on Research Subjects

2016

We develop a practical technique in this paper to classify the scholars in different disciplines, organizations according to their research interests. The scholar classification is important to the scholars, research organizations,, government for research, evaluation, …

Defending against ROP Attacks with Nearly Zero Overhead

2019

Return-Oriented Programming (ROP) is a sophisticated exploitation technique that is able to drive target applications to perform arbitrary unintended operations by constructing a gadget chain reusing existing small code sequences (gadgets) collected across the entire …

TKGF-NTP: Temporal Knowledge Graph Forecasting via Neural Temporal Point Process

2023

Knowledge graphs (KGs) with real-world facts are vital for various downstream applications. However, the incomplete nature of KGs has brought lots of problems to them, and probing missing facts via reasoning or forecasting has become …

Learnability Boundary: How Complex Can Neural Networks Learn Pseudo-Random Sequences?

2026 · Zenodo (CERN European Organization for Nuclear Research)

Classical information theory assumes observers have unlimited computational power, making pseudo-random numbers "low entropy." However, for computationally bounded neural networks, the same data may be completely unlearnable noise. This paper experimentally explores the boundary of …