This network graph visualizes character relationships from Les Misérables, with nodes representing characters colored by group membership and link thickness reflecting interaction strength. The SVG visualization uses d3.forceSimulation with forceLink, forceManyBody, and forceCenter to position nodes, while d3.select and data joins render circles and lines. Node colors come from a d3.scaleOrdinal with schemeCategory10, and the simulation tick event updates element positions dynamically.