Research Results

The Caselaw Visualization Blog by João Marinotti (HLS, 2020) shares data visualizations about U.S. caselaw using CAP data.

"This post is about a research paper (preprint) on sentence retrieval for statutory interpretation that we presented at the International Conference on Artificial Intelligence and Law (ICAIL 2019) held in June at Montreal, Canada." - Jaromir Savelka, Huihui Xu, and Kevin D. Ashley

Research paper by Jonathan H. Choi, NYU Law Review, May 2020 (Forthcoming).

Michael Nelson and Steven Morgan at Pennsylvania State University summarize their research using CAP data.


Paul Gowder shares his work teaching data science to law students at the University of Iowa.

Fun Stuff

Generate rhymes using caselaw!

What's the color of caselaw?

See all instances of "!"



H2O uses the CAP API to provide free caselaw textbooks for anyone.

"This is a prototype interface designed for the Boston Desegregation Archive: Annotated Case Law and Digital Reference project, a collaboration between the Boston Research Center, University Libraries, and NuLawLab at Northeastern University."

See all instances of "witchcraft" charted out on the U.S. map.


Learn how to write case data from the Caselaw Access Project API to CSV.

Learn how to get opinion authors from cases with the CAP API and CourtListener.

This tutorial shares how to create a data analysis workspace with Voyant and the CAP API.

See some ways of getting started with the data! Examples are written in Python.