The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12626139 B1

Date of Patent:

May. 12, 2026

Filed:

Aug. 14, 2019

Secret softmax function calculation system, secret softmax function calculation apparatus, secret softmax function calculation method, secret neural network calculation system, secret neural network learning system, and program

Applicant:

Ntt, Inc., Tokyo, JP;

Inventors:

Ibuki Mishina, Musashino, JP;

Dai Ikarashi, Musashino, JP;

Koki Hamada, Musashino, JP;

Assignee:

NTT, Inc., Tokyo, JP;

Attorney:

XSENSUS LLP

Primary Examiner:

Miranda M Huang

Assistant Examiner:

Sidney Vincent Bostwick

Int. Cl.

CPC ...

G06N 3/084 (2023.01); G06F 21/57 (2013.01);

U.S. Cl.

CPC ...

G06N 3/084 (2013.01); G06F 21/57 (2013.01);

Abstract

Techniques for performing secure computing of softmax functions at high speed and with high accuracy are provided. A secure softmax function calculation system that calculates a share ([[softmax (u)]], . . . , [[softmax (u)]]) from a share ([[u]], . . . , [[u]]) includes a subtraction means for calculating a share ([[u−u]], [[u−u]], . . . , [[u−u]]), a first secure batch mapping calculation means for calculating, [[exp (u−u)]], [[exp (u−u)]], . . . , [[exp (u−u)]], an addition means for calculating a share and a second secure batch mapping calculation means for calculating a share ([[softmax (u)], . . . , [[softmax (u)]]).

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