PRSI splits user interaction vectors into random shares relayed through peers so the server can reconstruct and train on them, but the privacy guarantee rests on the unproven assumption that no party ever collects all shares.
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PRSI: Privacy-Preserving Recommendation Model Based on Vector Splitting and Interactive Protocols
PRSI splits user interaction vectors into random shares relayed through peers so the server can reconstruct and train on them, but the privacy guarantee rests on the unproven assumption that no party ever collects all shares.