A method for calculating weights of evaluation indexes for site selection of large-span underground powerhouse

Abstract

The application provides a kind of large-span underground powerhouse site selection evaluation index weight calculation method, belong to the intersection technical field of geology engineering and artificial intelligence, including the following steps: define the ontology model of geological risk knowledge graph;Based on BERT model, model fine-tuning is carried out to generate GEO-KG-BERT model, so that GEO-KG-BERT model can accurately identify the core entity and key relationship in geological text;The core entity and key relationship are extracted using the GEO-KG-BERT model, and the key relationship of the ontology model of "node-edge-attribute" is constructed;Based on the geological risk knowledge graph, the number of relationships, path intensity and importance are calculated;The importance of all geological indicators is normalized to generate an initial weight vector;The initial weight vector is corrected to obtain the final weight vector.The application calculates the weight of the large-span underground powerhouse site selection evaluation index based on the knowledge graph and GEO-KG-BERT model, and dynamically corrects the semantic support parameters based on the GEO-KG-BERT model, which improves the objectivity and accuracy of the risk evaluation result.

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