HomeNewsListDr. Zhiying Wang visited on November 8th

Dr. Zhiying Wang visited on November 8th

Dr. Zhiying Wang visited our lab on November 8th. She gave a talk on "Coding for Information Storage" in Room 9-206, Rohm Building at 10:00 and then met with Professor Gu and students in the afternoon. 

 

Fig.1 Dr. Zhiying Wang is giving the talk

Fig. 2 Dr. Zhiying Wang is explaining the rebuilding constructions

 

Zhiying Wang is a postdoc at Stanford University. Dr. Wang received Ph.D.and M. Sc. degrees in Electrical Engineering from California Institute of Technology in 2013 and 2009, respectively. She got her B.Sc. degree in Information Electronics and Engineering from Tsinghua University, China, in 2007. Her research interests include information theory, theoretical and applied aspects of coding for storage devices, as well as efficient storage and processing of large amount of data.

 

 

Title:

Coding for Information Storage

Abstract:

We will present coding for information storage in both the device level and the system level. In the device level, we propose partial rank modulation for flash memory, which is a scheme based on the work by Jiang et al. but has lower decoding complexity. Partial rank modulation are induced from a group of flash cells such that overshoot errors for programming are eliminated. We also study the integration of RAID schemes and distributed storage in the system level. RAID schemes are based on MDS (maximum distance separable) array codes that enable optimal storage and efficient encoding and decoding algorithms. We ask the following question on rebuilding: what is the smallest fraction of information that one needs to access and transmit in order to rebuid a given number of erasures in a code? We will show explicit constructions that achieve optimal rebuilding.

Video:

Youku, Youtube