Verdict community

Our primary goal is to build a usable system. We are committed to stay as an open-source project, which is possible since we are a government-funded research group at university.

Verdict has received much attention from the industry as well as from the academia. Our plan is to turning this project into an Apache project within a few months.

Mailing lists

For debug issues, bugs, feature requests, opinions, etc., it is recommended you to use the mailing list. Anyone can join the mailing list at this website. Some people found it to be more convenient to open issues in this Github page. We are notified your feedbacks immediately via email.


Verdict is developed and maintained primarily by the database group at the University of Michigan, Ann Arbor. However, anyone is welcome to join and contribute to this project. You can simply fork our Github repository, make any changes you want, and send a pull request. We will merge your changes after a review. Thus far, the following people have contributed to this project.

Name Organization
Yongjoo Park University of Michigan, Ann Arbor
Barzan Mozafari University of Michigan, Ann Arbor
Joseph Sorenson University of Michigan, Ann Arbor
Junhao Wang University of Michigan, Ann Arbor
Li-yin Young University of Colorado
Xiaoran Xu University of Michigan, Ann Arbor
Shahab Tajik Apple

Research discussions

If you are a researcher, you are welcome to discuss your ideas with us. Send an email to either,, or This will help us find possible improvements for Verdict and change our development plans or module dependencies considering your ideas.

We are a leading research group in the area of approximate query processing and are tracking most of the relevant academic papers published in major database conferences, such as SIGMOD, VLDB, CIDR, ICDE, and so on. Find our research contributions in this page.