About me

I am a senior researcher in the Systems Research group at NEC Laboratories America. My research spans the areas of networking and distributed systems and (r)evolves around the duality of data analytics and system design. I enjoy measuring and analyzing networked systems to understand their operation and identify opportunities for improvement. I then use the results of measurements to design better systems or better manage existing ones. 


Research summary
   Analytics and measurement  Design and management
 Software-defined networking  PAM'16, PAM'15, HotSDN'14, PAM'13  SOSR'17SOSR'15, HotSDN'14, DSN'14
 Security  ICWSM'12IMC'12, ICLR'18  Sigcomm'15
 Internet economics  Sigcomm'11, NetEcon'08  NSDI'09
 Internet/cloud  performance  SoCC'17IMC'09PAM'09  NSDI'09, HotNets'07


Selected publications (full list)

Learning IP Network Representations
Mingda Li, Cristian Lumezanu, Bo Zong, Haifeng Chen
ACM Sigcomm Workshop on Big Data Analytics and Machine Learning for Data Communication Networks (Big-DAMA), 2018

Deep Autoencoding Gaussian Mixture Model for Unsupervised Anomaly Detection
Bo Zong, Qi Song, Martin Renqiang Min, Wei Cheng, Cristian Lumezanu, Daeki Cho, Haifeng Chen
International Conference on Learning Representations (ICLR), 2018 [pdf]

Polygravity: Traffic Usage Accountability via Coarse-grained Measurements in Multi-tenant Data Centers
Hyunwook Baek, Cheng Jin, Guofei Jiang, Cristian Lumezanu, Jacobus Van der Merwe, Ning Xia, Qiang Xu
Symposium on Cloud Computing (SoCC), 2017 [pdf]

Magneto: Unified Fine-grained Path Control in Legacy and OpenFlow Hybrid Networks
Cheng Jin, Cristian Lumezanu, Qiang Xu, Hesham Mekky, Zhi-Li Zhang, Guofei Jiang
Symposium on SDN Research (SOSR), 2017 [pdf]

Characterizing Rule Compression Mechanisms in Software-defined Networks
Curtis Yu, Cristian Lumezanu, Harsha Madhyastha, Guofei Jiang
Passive and Active Measurement Conference (PAM), 2016 [pdf]

Telekinesis: Controlling Legacy Switch Routing with OpenFlow in Hybrid Networks
Cheng Jin, Cristian Lumezanu, Qiang Xu, Zhi-Li Zhang, Guofei Jiang
Symposium on SDN Research (SOSR), 2015 [pdf]

Transparent and Efficient Network Management for Big Data Processing in the Cloud
Anupam Das, Cristian Lumezanu, Yueping Zhang, Vishal Singh, Guofei Jiang, Curtis Yu
Usenix Workshop on Hot Topics in Cloud Computing (HotCloud), 2013 [pdf]

FlowSense: Monitoring Network Utilization with Zero Measurement Cost
Curtis Yu, Cristian Lumezanu, Vishal Singh, Yueping Zhang, Geoff Jiang, Harsha V. Madhyastha
Passive and Active Measurement Conference (PAM), 2013 [pdf]

#bias: Measuring the Tweeting Behavior of Propagandists
Cristian Lumezanu, Nick Feamster, Hans Klein
AAAI International Conference on Weblogs and Social Media (ICWSM), 2012 [pdf]

How Many Tiers? Pricing in the Internet Transit Market
Vytautas Valancius, Cristian Lumezanu, Nick Feamster, Ramesh Johari, Vijay Vazirani
ACM Sigcomm, 2011 [pdf]

Symbiotic Relationships in Internet Routing Overlays
Cristian Lumezanu, Randy Baden, Dave Levin, Neil Spring, Bobby Bhattacharjee
Usenix Symposium on Networked Systems Design and Implementation (NSDI), 2009  [pdf] [www]