TY - GEN
T1 - Lossy compression with privacy constraints
T2 - IEEE Information Theory Workshop, ITW 2015
AU - Mokhtarinezhad, Farshid
AU - Kliewer, Jorg
AU - Simeone, Osvaldo
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/12/17
Y1 - 2015/12/17
N2 - A lossy source coding problem with privacy constraint is studied in which two correlated discrete sources X and Y are compressed into a reconstruction X with some prescribed distortion D. In addition, a privacy constraint is specified as the equivocation between the lossy reconstruction X and Y. This models the situation where a certain amount of source information from one user is provided as utility (given by the fidelity of its reconstruction) to another user or the public, while some other correlated part of the source information Y must be kept private. In this work, we show that polar codes are able, possibly with the aid of time sharing, to achieve any point in the optimal rate-distortion-equivocation region identified by Yamamoto, thus providing a constructive scheme that obtains the optimal tradeoff between utility and privacy in this framework.
AB - A lossy source coding problem with privacy constraint is studied in which two correlated discrete sources X and Y are compressed into a reconstruction X with some prescribed distortion D. In addition, a privacy constraint is specified as the equivocation between the lossy reconstruction X and Y. This models the situation where a certain amount of source information from one user is provided as utility (given by the fidelity of its reconstruction) to another user or the public, while some other correlated part of the source information Y must be kept private. In this work, we show that polar codes are able, possibly with the aid of time sharing, to achieve any point in the optimal rate-distortion-equivocation region identified by Yamamoto, thus providing a constructive scheme that obtains the optimal tradeoff between utility and privacy in this framework.
UR - http://www.scopus.com/inward/record.url?scp=84962712950&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84962712950&partnerID=8YFLogxK
U2 - 10.1109/ITWF.2015.7360759
DO - 10.1109/ITWF.2015.7360759
M3 - Conference contribution
AN - SCOPUS:84962712950
T3 - ITW 2015 - 2015 IEEE Information Theory Workshop
SP - 182
EP - 186
BT - ITW 2015 - 2015 IEEE Information Theory Workshop
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 11 October 2015 through 15 October 2015
ER -