A Knowledge Graph Construction System Based on Digital Elevation Model

In recent years, Integration of knowledge graph technology into various domains has become a prominent trend, fostering the emergence of domain-specific knowledge graph tailored to particular fields. Digital Elevation Model (DEM), as fundamental data for terrain analysis, has widespread applications in surveying, hydrology, geomorphology, and Geographic Information Systems (GIS). However, research on constructing knowledge graph based on DEM remains relatively limited. This study presents a system for constructing knowledge graph based on DEM. In this system, valley and ridge lines are delineated and organized into slope units with distinct boundaries and semantic clarity, refined from DEM. These slope units serve as entities, and their spatial relationships form the connections within the knowledge graph. This system features a user-friendly interface, enabling users to intuitively view terrain data and the knowledge graph. Additionally, it supports natural language Question and Answer (Q&A) functionality, allowing users to query terrain information, explore relationships between slope units, and calculate the shortest paths. By providing new perspectives and tools, this system advances the research and application of terrain data. Continuous improvement and expansion are expected to enhance terrain analysis technology and create innovative opportunities in related disciplines.