The invention provides a multi-language law retrieval
system. The
system comprises three modules: an input understanding module, a sub-query execution module and a networking search module, the input understanding module is used for receiving questions input by a user, understanding the specific questions input by the user by using a large
language model, and finally decomposing user query into sub-query-national data pairs to form a sub-query
list; the sub-query execution module receives a query
list of the input understanding module, constructs a multi-language legal field retrieval
system, realizes fusion of vector retrieval and BM25 through an Elasticsearch query function, and provides related sub-law article sets for countries and questions in law article data; the networking search module calls a
search interface after understanding a user query, and searches related information on
the Internet through an Internet
search engine to realize knowledge expansion and information completion; and finally, jointly outputting the related sub-law article set and the related information on
the Internet as a search result. Therefore, the retrieval precision of legal retrieval is improved.