Figure 1

Inner composition of arxivPhysics2013 partitions. The color of each cell accounts for the fraction of articles of a given category belonging to a cluster (each column sums to 1). The articles of the same categories tend to incorporate into single clusters as justified by clearly visible block-diagonal structure of both idf and bp partitions. Nevertheless, the split of some categories into distinct clusters may be observed. For instance, the articles of nucl-th category are roughly equally split among hep- and cond-mat-dominated categories. On the right, the most representative concepts for each cluster are shown.