(19)

(11)

EP 3 931 724 A1

(12)

(43) Date of publication: 05.01.2022 Bulletin 2022/01 (21) Application number: 20829399.3 (22) Date of filing: 23.11.2020

(51) International Patent Classification (IPC):  G06F 16/957(2019.01) (52) Cooperative Patent Classification (CPC): G06F 16/9538; G06F 16/9577; G06N 20/00; H04L 67/2823 (86) International application number: PCT/US2020/061767 (87) International publication number: WO 2021/221718 (04.11.2021 Gazette 2021/44)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 27.04.2020 RO 202010018 22.05.2020 RO 202000282 (71) Applicant: Google LLC Mountain View, CA 94043 (US)	(72) Inventors: CARBUNE, Victor 8002 Zürich (CH) SHARIFI, Matthew 8002 Zurich (CH) (74) Representative: Harden, Henry Simon et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)