METHOD AND SYSTEM FOR ANSWERING MULTI-DIMENSIONAL ANALYTICAL QUERIES UNDER LOCAL DIFFERENTIAL PRIVACY

WIPO Patent Application WO/2020/248150

A1

Systems and methods for answering a multi-dimensional analytical query under local differential privacy including receiving a query for an analytical result of user data in at least a first range over a first data dimension; determining a plurality of sub-intervals associated with the at least first range; decomposing the query into a plurality of sub-queries, each of the plurality of sub-queries corresponding to one of the plurality of first sub-intervals; fetching, from user devices, first user data in the plurality of sub-intervals; and computing the analytical result of user data in at least the first range over the first data dimension in accordance with the first user data in the plurality of sub-intervals.

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DING BOLIN (US)
ZHOU JINGREN (CN)
WANG TIANHAO (US)

PCT/CN2019/090837

December 17, 2020

June 12, 2019

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ALIBABA GROUP HOLDING LTD (CN)

G06F16/2455

CN109726225A	2019-05-07
US20180113902A1	2018-04-26
US20170235779A1	2017-08-17
US20190057133A1	2019-02-21
CN109299436A	2019-02-01
CN108388579A	2018-08-10
CN1588358A	2005-03-02
CN102682118A	2012-09-19

BEIJING TSINGYUANHUI INTELLECTUAL PROPERTY LAW FIRM (CN)

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