Buzzwords! by Icaro Bernardes
This work sprung from a database on the titles of papers of NBER programs. I kept only papers between 1980 and 2020, removed stopwords, and unified some terms. Then, I obtained the 5 most used words yearly and their frequency among the programs. Finally, these frequencies were normalized by year and term and presented in a heatmap.
The heatmap shows the evolution of usage of terms and which program was most responsible for it. The rows that contain the programs were arranged by similarity. The separation by departments appeared organically.