We are the Graph Exploration and Mining at Scale (GEMS) lab at the University of Michigan, founded and led by Danai Koutra. Our team researches important data mining and machine learning problems involving interconnected data: in other words, graphs or networks.

From airline flights to traffic routing to neuronal interactions in the brain, graphs are ubiquitous in the real world. Their properties and complexities have long been studied in fields ranging from mathematics to the social sciences. However, many pressing problems involving graph data are still open. One well-known problem is scalability. With continual advances in data generation and storage capabilities, the size of graph datasets has dramatically increased, making scalable graph methods indispensible. Another is the changing nature of data. Real graphs are almost always dynamic, evolving over time. Finally, many important problems in the social and biological sciences involve analyzing not one but multiple networks.

So, what do we do?

The problems described above call for principled, practical, and highly scalable graph mining methods, both theoretical and application-oriented. As such, our work connects to fields like linear algebra, distributed systems, deep learning, and even neuroscience. Some of our ongoing projects include:

We’re grateful for funding from Adobe, Amazon, the Army Research Lab, the Michigan Institute for Data Science (MIDAS), Microsoft Azure, the National Science Foundation (NSF), and Trove.


If you’re interested in joining our group, send an email with your interests and CV to gemslab-opportunities@umich.edu.


January 2020
Danai named Morris Wellman Professor!

January 2020
Research Fellow Fatemeh Vahedian joins the group!

December 2019
Carol gets an honorable mention in CRA's Outstanding Undergraduate Research Program.

November 2019
Danai receives a Precision Health Investigator Award!

November 2019
Arya Farahi returns to UMich

October 2019
1 paper accepted to WSDM

October 2019
Mark and Tara receive the Best Student Paper Award at ICDM 2019

September 2019
Caleb passes his prelim

August 2019
2 papers accepted at ICDM

June 2019
1 paper accepted at ASONAM

June 2019
1 paper accepted at PKDD

May 2019
Welcome new PhDs!

May 2019
Tara passes her prelim

April 2019
3 papers accepted to KDD 2019

March 2019
Danai receives NSF CAREER award

See all news →