Report summary

For Harvard University Department of Statistics in 2015-2026, the graph shows 44 visible PIs and 35 internal PI collaborations. The main research signal is Mathematics as the leading field (16% of slots across 14 PIs; 14 labels), Statistics and Probability as the leading subfield (13% of slots across 13 PIs; 13 labels), and Statistical Methods and Inference as the leading topic (6% of slots across 7 PIs; 7 labels). The network looks reasonably well-rounded, with visible collaboration groups but not so much concentration that one field explains the whole department. The most prominent PIs by weighted works are Joel Schwartz (73.6 weighted works; Air Quality and Health Impacts, Climate Change and Health Impacts). The clearest collaboration lines are Joel Schwartz and Andrea Baccarelli (17 shared works, weight 5.8). The strongest breakdown groups are group 1 with 10 PIs, 11 internal connections, weight 28.9, around Health, Toxicology and Mutagenesis, Statistics and Probability, Genetics, led by Joel Schwartz, Xihong Lin, Tamar Sofer.