公开(公告)号：GB2599043A

公开(公告)日：2022-03-23

申请号：GB202117672

申请日：2020-07-23

Applicant: IBM

Inventor： TIM SCHEIDELER ,  ARJUN RAGHAVENDRA ,  MATTHIAS SEUL

IPC: G06F16/13

Abstract: A computer-implemented method for managing access rights to a knowledge graph is provided. The method comprises splitting, for each user system, its respective portion of the knowledge graph into a plurality of knowledge subgraphs, encrypting each of the knowledge subgraphs, and generating a plurality of private summary graphs. The method also comprises maintaining a collaboration graph comprising one vertex per user system and edges representing collaborations between the users, mapping all private subgraphs of all user systems to one public summary graph, each vertex of the public summary graph comprises less data than the related vertex of the related private summary graphs and wherein none of the vertices of the summary graph comprises any encryption or decryption key, and granting access to a selected knowledge subgraph from a first user system to a second user system.