Featured Research

We publish research articles in conferences and journals primarily in the field of computer science, but also in other fields including psychology, sociology, and medicine. See our blog for research highlights and our publications page for a comprehensive view of our research contributions. Here are excerpts from recent articles:

Human-Aided Information Retrieval to Create a Peer Support Group Meeting List

Can you think of someone familiar who has been affected by alcoholism in some way? For many of you probably the answer is yes, since about 6% of US adults ages 18 and older suffers from Alcohol Use Disorder. For many of these affected people, the Alcoholics Anonymous (AA) program has been providing a venue where they can get social support. They can share any problems they experience along the way as well as get inspired from other individuals who have built a successful recovery. Many people continue going to the meetings even though they have been sober for many years. More…

System Design to Reduce Social Cost of Question Asking

Many of us have used social media to ask questions, but there are times when we are hesitant to do so. For example, when we are dealing with personal struggles that we don’t want others to know, we may end up searching online for help and advice, because we are not willing to ask questions that disclose our weaknesses and harm our social image that has been curated online. This psychological burden that prevents us from posting questions to social networks is called “social cost”. In addition to the concerns of harming social image, people are not willing to ask for help if it incurs obligation to reciprocate, discloses personal information, or bothers others. The great potential of social media in exchanging knowledge and support cannot be fully tapped if we do not reduce such social cost. More…

Featured Projects

We build and study real systems, going back to the release of MovieLens in 1997. See our projects page for a full list of active projects; see below for some featured projects.

MovieLens is a web site that helps people find movies to watch. It has hundreds of thousands of registered users. We conduct online field experiments in MovieLens in the areas of automated content recommendation, recommendation interfaces, tagging-based recommenders and interfaces, member-maintained databases, and intelligent user interface design.

Find bike routes that match the way you ride. Share your cycling knowledge with the community. Cyclopath is a geowiki: an editable map where anyone can share notes about roads and trails, enter tags about special locations, and fix map problems – like missing trails. Hundreds of Twin Cities cyclists are already doing this, making Cyclopath the most comprehensive and up-to-date bicycle information resource in the world.

LensKit is an open source toolkit for building, researching, and studying recommender systems. Do you need a recommender for your next project? LensKit provides high-quality implementations of well-regarded collaborative filtering algorithms and is designed for integration into web applications and other similarly complex environments.

More About GroupLens

GroupLens is headed by faculty from the department of computer science and engineering at the University of Minnesota, and is home to a variety of students, staff, and visitors.