| Paper Abstract and Keywords |
| Presentation |
2019-09-19 15:10
Secure sparse representations in L0 norm minimization
Takayuki Nakachi (NTT), Hitoshi Kiya (Tokyo Metro. Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
In this paper, we propose a method to estimate secure sparse representations in L0 norm minimization, and evaluate the effectiveness of the proposed scheme. With the advent of the big data era, digital content continues to increase. Sparse coding is attracting attention as an information processing model for extracting significant information from a large amount of data. It has been applied to a number of fields including image processing and data analysis, and its effectiveness is recognized. On the other hand, cloud computing is spreading in many fields including image processing and data analysis. However, the cloud computing has some serious issues for end users, such as unauthorized use and leak of data, and privacy compromise, due to unreliability of providers and some accident. We propose a method to estimate secure sparse coefficients from encrypted observed signals while keeping them secure. Simulation results show that it can estimate the encrypted sparse coefficients and unauthorized users can not decode observed signals even in leaking of dictionaries. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Sparse Coding / Sparse Representation / L0 Norm / Random Unitary Transform / Secure Computation / / / |
| Reference Info. |
ITE Tech. Rep. |
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| Download PDF |
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| Conference Information |
| Committee |
IEICE-IE IEICE-EMM IEICE-LOIS IEE-CMN ME IPSJ-AVM |
| Conference Date |
2019-09-19 - 2019-09-20 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Tokimeito, Niigata University |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
IEICE-EMM |
| Conference Code |
2019-09-IE-EMM-LOIS-CMN-ME-AVM |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Secure sparse representations in L0 norm minimization |
| Sub Title (in English) |
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| Keyword(1) |
Sparse Coding |
| Keyword(2) |
Sparse Representation |
| Keyword(3) |
L0 Norm |
| Keyword(4) |
Random Unitary Transform |
| Keyword(5) |
Secure Computation |
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| 1st Author's Name |
Takayuki Nakachi |
| 1st Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
| 2nd Author's Name |
Hitoshi Kiya |
| 2nd Author's Affiliation |
Tokyo Metropolitan University (Tokyo Metro. Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2019-09-19 15:10:00 |
| Presentation Time |
25 minutes |
| Registration for |
IEICE-EMM |
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| Volume (vol) |
vol.43 |
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