The application provides a dynamic
knowledge retrieval and iterative generation method based on
time sensitivity quantification. The
system extracts the semantic features, time entities and historical answer update frequency of the user's question, calculates the time-sensitive sensitivity
score of 0~1, and calls the
large model API to assist calibration for complex or uncertain questions. The dynamic retrieval module assigns weights to the local
knowledge base and Internet documents according to the
score, constructs a
time sequence candidate document set, and prioritizes the latest Internet documents for high sensitivity questions, mainly uses the local
knowledge base supplemented by
the Internet for medium sensitivity questions, and only uses the local
knowledge base for low sensitivity questions. In the review stage, the
time sequence and version conflict are detected to form a preliminary review document set, and in the refine stage, the answer is optimized through dynamic time weight fusion, obsolete information filtering and time constraint, and a
closed loop is formed through secondary recall. Finally, the answer is generated with the source,
timestamp and time-sensitive confidence. The method effectively solves the problems of traditional static question and answer
system in time-sensitive
adaptation, fixed document weight and
time sequence conflict
processing difficulty, and improves the accuracy, timeliness and
system stability of the answer.