Fig. 13From: Course-prerequisite networks for analyzing and understanding academic curriculaA heatmap visualization (left) and a network representation (right) of the division interdependence matrix \(R^{{\mathcal {D}}}\) for the LCC \({\mathcal {G}}\) of the Caltech CPN. In the network representation, nodes represent divisions, each link is directed and starts from the node of the same color. The thickness of a link from d to \(d'\) is proportional to the value of \(R^{{\mathcal {D}}}_{dd'}\). Self-links (from d to d) are not shownBack to article page