Lei Xu

Affinity and Conflict-Aware Placement of Virtual Machines in Heterogeneous Data Centers

2015

Virtual machine placement (VMP) problem has been a key issue in IaaS/PaaS cloud infrastructures. Many recent works on VMP prove that inter-VM relations such as memory share, traffic dependency and resource competition should be seriously …

MTLH: Video QoE Monitoring for Encrypted Traffic via Multi-Task Learning with Hierarchy

2020

With the continuous growth of video traffic on the whole Internet, it is of vital importance for content providers to provide high-quality service. Monitoring the QoE (Quality of Experience) of video can help them to …

Synthesizing Public Opinions with LLMs: Role Creation, Impacts, and the Future to eDemorcacy

2025 · arXiv (Cornell University)

This paper investigates the use of Large Language Models (LLMs) to synthesize public opinion data, addressing challenges in traditional survey methods like declining response rates and non-response bias. We introduce a novel technique: role creation …

Joint learning of character and word embeddings

2015 · International Conference on Artificial Intelligence

Most word embedding methods take a word as a basic unit and learn embeddings according to words' external contexts, ignoring the internal structures of words. However, in some languages such as Chinese, a word is …