The invention discloses a multi-source feature
collaborative knowledge mining and
semantic association method, and belongs to the technical field of full-life-cycle
knowledge processing of railway track
engineering. According to the method, field-related documents are screened, an element range and a
processing sequence are limited in combination with a
knowledge graph, the documents are customized to generate a term candidate set, term statistical weights are calculated based on a full-life-cycle corpus, dynamic semantic vectors are generated by utilizing a field self-adaptive pre-training model, and composite concept representation is obtained through fusion of an attention mechanism. And linking the
knowledge graph to construct a heterogeneous graph, mining association through a graph
attention network, analyzing, querying and verifying
sequential logic, and then outputting structured knowledge. According to the method, the problems of railway track
engineering data islands and cross-stage semantic segmentation can be solved, low-frequency
key terms are accurately recognized, the result
interpretability is enhanced, applications such as design optimization and
construction management and control are directly supported, and the method is adaptive to multiple
engineering professions and high in practicability.