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 - Funding Information:
This work was supported in part by NSF grant CCF-1439465.

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 -