Method, medium and device for extracting causal relationship from medical knowledge graph

By converting triple data of the medical knowledge graph into two-dimensional tabular data, and using Bootstrap sampling layer by layer optimization skeleton algorithm and mountain climbing search strategy, the inefficiency and accuracy of causal relationship discovery in the medical knowledge graph in the existing technology is solved, and more efficient and accurate causal relationship extraction is achieved.

CN118839020BActive Publication Date: 2025-03-25HEFEI UNIV OF TECH
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Patent Information

Application Number
CN202411310647.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-20
Publication Date
2025-03-25
Estimated Expiration
2044-09-20

AI Technical Summary

Technical Problem

Existing causal relationship discovery algorithms are difficult to effectively learn causal relationships on graph structure data of medical knowledge graphs, and are easily affected by noise and sample size, resulting in inaccurate learning.

Method used

By converting triple data from the medical knowledge graph into two-dimensional tabular data, the layer-by-layer optimization skeleton algorithm based on Bootstrap sampling, combined with the mountain climbing search strategy, the final directed acyclic graph is learned in a directional manner.

Benefits of technology

It improves the accuracy of causal extraction, overcomes the inefficiency and accuracy of existing algorithms in high-dimensional data and noise environments, and can guide clinical decision-making more scientifically.

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Abstract

The present invention discloses a method, medium and device for extracting causal relationships from a medical knowledge graph, and relates to the field of data mining. The method for extracting causal relationships from a medical knowledge graph mainly includes: constructing a set of medical knowledge triples according to medical knowledge graph data; removing and merging the set of medical knowledge triples, extracting relations and entities therefrom, and obtaining a set of relations and entities; converting the set of relations and entities into two-dimensional table data; according to the two-dimensional table data, using a layer-by-layer optimization skeleton algorithm based on Bootstrap sampling to obtain a sample data set and an optimized skeleton; according to the sample data set, orienting the optimized skeleton to obtain a final directed acyclic graph. The method, medium and device for extracting causal relationships from a medical knowledge graph provided by the present invention can improve the accuracy of causal relationship extraction.
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