This interactive force-directed network diagram visualizes weighted connections between firms, with edges filtered to show only those with a weight of 5 or greater. Users can double-click nodes or edges to delete them, triggering smooth opacity transitions that animate the network’s reorganization. The implementation uses `d3.layout.force` for physics simulation, SVG for rendering, and mouseover/mouseout handlers to temporarily highlight nodes and edges. Data loads from the `firm.csv` file, and circle radii adjust in real time based on node weight during each tick update.