Social network-based recommendation model training method and apparatus

Abstract

The application provides a social network-based recommendation model training method and device, wherein the social network-based recommendation model training method comprises the following steps: determining a target user and a reference user cluster of the target user; obtaining local object information of the target user and public object information of the reference user cluster, wherein the public object information is object information disclosed by a reference user; constructing an object hypergraph based on the local object information and the public object information, and determining user preference information of the target user based on the object hypergraph; training a local recommendation model according to the user preference information to obtain a local training gradient, wherein the local training gradient is a model gradient after encryption coding; and uploading the local training gradient to a server, so that the server updates a target recommendation model according to the local training gradient.

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