The invention discloses a
rare earth industry-oriented
big data semantic retrieval method and
system based on a
knowledge graph, and belongs to the technical field of
knowledge management and intelligent retrieval. In order to solve the problems that traditional keyword retrieval is insufficient in accuracy, incapable of understanding
semantics and high in use threshold, the method comprises the following steps: establishing a
rare earth industry field
knowledge graph, defining entities such as materials, processes, equipment and suppliers and association relationships thereof, and extracting data from a manufacturing execution platform, a
resource planning platform and a supplier
collaboration platform; carrying out intention recognition and entity extraction on the
natural language retrieval request by adopting a deep
language understanding model, and converting the intention recognition and entity extraction into a
graph query statement; semantic reasoning and associated query are performed based on the
knowledge graph, a related result is returned in combination with a vector retrieval technology, and intelligent recommendation is provided. According to the method, the retrieval accuracy is improved by more than six percent, a user can perform
natural language retrieval without knowing a
data structure, and the method is suitable for scenes such as
rare earth enterprise knowledge query,
data analysis assistance and intelligent question and answer.