• 2007
• Domain Map
• Exhibit map

This is a similarity-based cluster map of all grants awarded by the National Institutes of Health (NIH) in 2007. Approximately 60,000 grants are represented as dots, color-coded by NIH Institute. To generate the map, the content of each grant was assessed using topic modeling, an unsupervised machine learning method based on statistics of co-occurring words in the grants’ abstracts. Grants were placed on the map using a layout algorithm that clusters grants with similar topic mixtures near each other. Clusters are labeled by the computationally derived topics with the highest word allocations in the underlying grants. The result is a cluster map that provides a global view of the NIH funding landscape that can be interactively explored at multiple levels, see zooms for Cardiac Diseases Research and Neural Circuit Research. Shown on the right are funding portfolios of four institutes together with their top-10 topics. By exploring this map, one can see what topics of research are being heavily pursued, how the topics relate to one another, and what research topics each institute is interested in. The interactive version of the map is shown on the left and is available online at http://www. nihmaps.org.