Patent SG-11201910061R-A (SG)
Title: A distributed multi-party security model training framework for privacy protection
Inventor: WANG HUAZHONG
IPC: G16B20/40
Filed: 2019-01-11
Abstract: 8 108k 104 Model Configuration Random Number Provider Security Management Agent Node Management Agent Secure Computation Node A 114 Secure Computation Node B f 112 Privacy Data FIG. 1 100 M 11 M N O ON 11 O C (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 111111111111110111111111111111101111101001111111111101110111011111111111101111001111 (10) International Publication Number WO 2019/072316 A3 (51) International Patent Classification: GOOF 21/60 (2013.01) GOON 20/00 (2019.01) (21) International Application Number: PCT/CN2019/071402 (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, Yuhang District, Hangzhou, Zhejiang 311121 (CN). YIN, Shan; Alibaba Group Legal Department 5/F, Building 3, No.969 West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang 311121 (CN). YING, Pengfei; Alibaba Group Le- gal Department 5/F, Building 3, No.969 West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang 311121 (CN). (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP- ERTY LAW CORPORATION; Room 409, Tower B, Ka With 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, 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, (54) Title: A DISTRIBUTED MULTI-PARTY SECURITY MODEL TRAINING FRAMEWORK FOR PRIVACY PROTECTION (57) : Methods, systems, and apparatus, including computer programs encoded on computer storage media, for training a multi-party secure logistic regression model (SLRM). One of the methods includes receiving, at a plurality of secure computation nodes (SCNs), a plurality of random numbers from a random number provider; encrypting, at each SCN, data stored at the SCN using the received random numbers; iteratively updating a secure logistic regression model (SLRM) by using the encrypted data from each SCN; and after iteratively updating the SLRM, outputting a result of the SLRM, wherein the result is configured to enable a service to be performed by each SCN. [Continued on next page] WO 2019/072316 A3 111111 I 01111I 0111010111111110111110 1 0 01 IMMOMMIONIMENHE 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: with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) upon request of the applicant, before the expiration of the time limit referred to in Article 21(2)(a) (88) Date of publication of the international search report: 24 October 2019 (24.10.2019)