KNOWLEDGE GRAPH ENHANCEMENT BY PRIORITIZING CARDINAL NODES

This document describes knowledge graph systems that determine cardinal nodes in a knowledge graph that provide the most impact on target nodes of a system and improves the system by adjusting the impact of the actual elements represented by the cardinal nodes. In one aspect, a method includes obtaining a knowledge graph that represents a given system and that includes multiple nodes that each represent an element of the given system. One or more target nodes are identified in the knowledge graph based on a value parameter for each node in the knowledge graph. A cardinal value that represents an impact that the node has on the one or more target nodes is determined for each node in the knowledge graph. A priority order of the nodes is determined for improvement based on the cardinal values. Data indicating one or more of the nodes is provided based on the order.