| Presentation | 2022-01-24 Study on a Correlation Controlling Method to Realize Correlation-used Calculations Sequentially in Stochastic Computing Shu Zhang, Shigeru Yamashita, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Stochastic Computing (SC) is an approximation calculation method using Stochastic Number (SN), which represents the existence probability of 1 in a bit string. Generally, when performing SC operations, if there is a correlation between SNs, a large error will occur. However, since a large circuit area is required to generate independent SNs, a method using correlated SNs has been proposed in recent years. Although operations using such correlated SNs are attracting attention, the following two problems exist. The first is that the correlation between output SNs changes in some operations. As a result, if the correlated operations are performed continuously, the SN correlation is affected, which in turn affects the calculation accuracy. The second problem is that some operations such as multiplication cannot be realized by correlated operations, so when performing complicated operations, it is necessary to use them together with uncorrelated operations. In this paper, in order to solve the above problems, we first propose a method of maintaining the correlation between output SNs by scaling addition by sharing the selection signal of the multiplexer. Next, by adding a method to reduce the correlation (RRRD) and a method to strengthen the correlation (SYNC) between the image processing operations, to control the correlation between SNs, and evaluate the effect. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | |
| Paper # | VLD2021-49,CPSY2021-18,RECONF2021-57 |
| Date of Issue | 2022-01-17 (VLD, CPSY, RECONF) |
| Conference Information | |
| Committee | RECONF / VLD / CPSY / IPSJ-ARC / IPSJ-SLDM |
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| Conference Date | 2022/1/24(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | FPGA Applications, etc. |
| Chair | Kentaro Sano(RIKEN) / Kazutoshi Kobayashi(Kyoto Inst. of Tech.) / Michihiro Koibuchi(NII) / Hiroshi Inoue(Kyushu Univ.) / Yuichi Nakamura(NEC) |
| Vice Chair | Yoshiki Yamaguchi(Tsukuba Univ.) / Tomonori Izumi(Ritsumeikan Univ.) / Minako Ikeda(NTT) / Kota Nakajima(Fujitsu Lab.) / Tomoaki Tsumura(Nagoya Inst. of Tech.) |
| Secretary | Yoshiki Yamaguchi(NEC) / Tomonori Izumi(Tokyo Inst. of Tech.) / Minako Ikeda(Osaka Univ.) / Kota Nakajima(NEC) / Tomoaki Tsumura(JAIST) / (Hitachi) / (Univ. of Tokyo) |
| Assistant | Yukitaka Takemura(INTEL) / Yasunori Osana(Ryukyu Univ.) / / Ryohei Kobayashi(Tsukuba Univ.) / Takaaki Miyajima(Meiji Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Reconfigurable Systems / Technical Committee on VLSI Design Technologies / Technical Committee on Computer Systems / Special Interest Group on System Architecture / Special Interest Group on System and LSI Design Methodology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on a Correlation Controlling Method to Realize Correlation-used Calculations Sequentially in Stochastic Computing |
| Sub Title (in English) | |
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| 1st Author's Name | Shu Zhang |
| 1st Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 2nd Author's Name | Shigeru Yamashita |
| 2nd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| Date | 2022-01-24 |
| Paper # | VLD2021-49,CPSY2021-18,RECONF2021-57 |
| Volume (vol) | vol.121 |
| Number (no) | VLD-342,CPSY-343,RECONF-344 |
| Page | pp.pp.1-6(VLD), pp.1-6(CPSY), pp.1-6(RECONF), |
| #Pages | 6 |
| Date of Issue | 2022-01-17 (VLD, CPSY, RECONF) |