The invention provides a retrieval recall method and
system fusing document fragmentation and
authority control, and relates to the technical field of
artificial intelligence and information retrieve.The method comprises the steps that a role of a user is obtained according to the identity of the user, and a corresponding authority strategy is determined in combination with a preset multi-level authority mapping relation; the permission strategy comprises a
label allowed to be accessed, a
data set and a document set; the query request is converted into a
semantic vector, and initial candidate document fragments are retrieved from a vector
database in combination with an associated
data set or tag identifier; according to the method, the candidate results are subjected to
access control filtering on the basis of the authority strategy, and the final retrieval recall result is generated, so that role-based fine-grained
access control is realized while high retrieval precision is ensured, the problems of rough authority management and weak
context processing capability in traditional retrieval are solved, and the security and efficiency of retrieval are remarkably improved.