Patent SG-11201909946U-A (SG)
Title: Logistic regression modeling scheme using secrete sharing
Inventor: WANG HUAZHONG
IPC: G06N3/02
Filed: 2019-01-11
Abstract: Node Management Agent 114 108 Random Number Provider 1101 104 Security Management Agent FIG. 1 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 18 April 2019 (18.04.2019) WIPO I PCT 1111111111111101111111111111111011111010011111111111111111111111111111111111011110111111 (10) International Publication Number WO 2019/072315 A2 (51) International Patent Classification: Not classified (21) International Application Number: PCT/CN2019/071394 (74) (22) International Filing Date: 11 January 2019 (11.01.2019) (25) Filing Language: English (26) Publication Language: English (71) Applicant: ALIBABA GROUP HOLDING LIMITED [—/CN]; Fourth Floor, One Capital Place, P.O. BOX 847, George Town, Grand Cayman (KY). (72) Inventors: WANG, Huazhong; Alibaba Group Legal De- partment 5/F, Building 3, No.969 West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang 311121 (CN). LI, Lichun; Alibaba Group Legal Department 5/F, Building 3, No.969 West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang 311121 (CN). YIN, Shan; Alibaba Group Legal Department 5/F, Building 3, No.969 West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang 311121 (CN). Agent: BEIJING BESTIPR INTELLECTUAL PROP- ERTY LAW CORPORATION; Room 409, Tower B, Ka Wah Building, No. 9 Shangdi 3rd Street, Haidian District, Beijing 100085 (CN). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (54) Title: A LOGISTIC REGRESSION MODELING SCHEME USING SECRETE SHARING 102 — c 8 Model Configuration 112 Secure Computation Node A Secure Computation Node B W O 2019/07 23 15 A2 1 100 (57) : Methods, systems, and apparatus, including computer programs encoded on computer storage media, for training a multi-party secure logistic regression model (SLRM) by using secrete sharing (secret sharing) techniques. One of the methods includes dividing sample training data for a secure logistic regression model (SLRM) into a plurality of shares using secret sharing (SS), wherein each share is distributed to a secure computation node (SCN); iteratively updating parameters associated with the SLRM using each share of the sample training data, wherein the iterative updating continues until the occurrence of a predetermined condition; and after iteratively updating the parameters associated with the SLRM, outputting a training result configured for use by each SCN. [Continued on next page] WO 2019/072315 A2 111111 I II11111 H 111111111111111111111110111 II1111111111101110111 SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: upon request of the applicant, before the expiration of the time limit referred to in Article 21(2)(a) without international search report and to be republished upon receipt of that report (Rule 48.2(g))