清华大学 | 信息学院 | 国家实验室 | English Version

重要公告

【转发】学术报告:Rapid Detection of Maintenance Induced Changes in Service...

Speaker: Zihui Ge(清华校友), Principal Manager, AT&T Labs – Research, USA

Title:  Rapid Detection of Maintenance Induced Changes in Service Performance

      CoNext 2011 Best Paper Winnner

Place:  东主楼10103

Time:   Dec 13, 2011, moroning, 10:00AM-11:00AM

Connect: 刘斌,62773441

Abstract:

Service quality in operational IP networks can be impacted due to

planned or unplanned maintenance. During any main-

tenance activity, the responsibility of the operations team is to

complete the work order and perform a check-up to ensure there are no

unexpected service disruptions. Once the maintenance is complete, it

is crucial to continuously monitor the network and look for any

performance impacts. What operators lack today are effective tools to

rapidly detect maintenance induced performance changes. The large

scale and heterogeneity of network elements and performance metrics

makes the problem extremely challenging.

In this talk, I'll present PRISM, a new tool for detecting maintenance

induced performance changes in a timely fashion. PRISM uses

association between maintenance and the network elements to identify

performance metrics for time-series analysis. It uses a new Multiscale

Robust Local Subspace algorithm (MRLS) to accurately identify changes

in performance even when the baseline is contaminated. We

systematically evaluate PRISM using data collected at four large

operational networks: a tier-1 backbone, VoIP, IPTV and 3G cellular

and show that it achieves good accuracy. We also demonstrate the

effectiveness of PRISM in real operational environments through

interesting case study findings.

Bio

Zihui Ge received his B.A. degree in computer science and technology

from Tsinghua University in 1998, his M.S. degree in computer science

from Boston University in 2000, and his Ph.D. degree in computer

science from University of Massachusetts at Amherst in 2003. Since May

2008, he has been a principal member of technical staff in the network

management and engineering department of AT&T Labs - Research. Prior

to that, he was the director of search engine research at Adverplex,

Inc. from 2007 to 2008, and a senior member of technical staff at AT&T

Labs - Research from 2004 to 2007. Zihui is very active in the

networking research and has published many papers in top ACM

conferences in areas of networking, measurement and performance

analysis. His recent paper "Rapid Detection of Maintenance Induced

Changes in Service Performance" has won the best paper award in ACM

CoNext 2011.

【发布时间:2012-01-18】【浏览次数: