讲演摘要

 

Distributed storage systems (DSS) are widely employed at data centers and in sensor networks, where storage node failures are inevitable. With the increasing utilization of inexpensive commodity storage hardware, failures of storage nodes are often treated as a norm rather than unexpected accidents. Structured redundancy is thereby introduced to DSS via various coding schemes. While efficiently accounting for storage node failures, such redundancy often leads to high storage overhead. Additionally, the storage allocation could also impact the data reliability in DSS. In this talk, we will review the fundamentals of DSS and explore the benefit of coding across multiple data objects. In addition to the mathematical investigation on the reliability of the cross-object coding and allocation (COCA), we will also discuss the tradeoff between data reliability and data retrieval complexity associated with COCA.

 

讲演者简介

 

Dr. Liuqing Yang received her Ph.D. degree in Electrical and Computer Engineering from the University of Minnesota, Minneapolis, in 2004. She is presently a Professor with Colorado State University. Her general interests are in signal processing with applications to communications, networking and power systems – subjects on which she has published more than 250 journal and conference papers, 4 book chapters and 2 books. Dr. Yang was the recipient of the Best Dissertation Award in the Physical Sciences & Engineering from the University of Minnesota in 2004, the Best Paper Award at the IEEE ICUWB’06, ICCC’13, ITSC’14, Globecom’14, ICC’16, and WCSP’16, the ONR Young Investigator Program (YIP) award in 2007, and the NSF Faculty Early Career Development (CAREER) award in 2009. She has served as an active reviewer for more than 10 journals, as TPC chair/member for a number of conferences, and as an associate editor for IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Intelligent Transportation Systems, IEEE Intelligent Systems, and PHYCOM: Physical Communication. Dr. Yang is an IEEE Fellow, and has been the co-chair of the Mobile Communication Networks technical committee of the IEEE ITSS since 2006.