John Riedl

About

Professor John Riedl was a renowned figure in the field of recommender systems and interactive intelligent systems. He was instrumental in creating and nurturing these fields, making significant contributions that bridged research and practical application. Riedl co-founded the company Net Perceptions in 1996 to commercialize his research, growing it to over 300 employees and influencing the industry substantially. His work has been widely adopted, with software derived from his research being used by tens of thousands of businesses today. In addition to his industry impact, Riedl was a dedicated educator and mentor. He created and led practice-focused courses that provided undergraduate students with hands-on experience in designing and building interactive intelligent systems for the Web, which supported thousands of users. He was recognized with several teaching awards, including an Outstanding Teacher Award from his department, the George Taylor Award for Exceptional Contributions to Teaching from the College of Science and Engineering, and the University’s McKnight Distinguished Professorship. Riedl was deeply concerned about student welfare and was a sought-after mentor for junior faculty, contributing significantly to the academic community. His research and leadership brought invaluable visibility to his department and the University, leaving a lasting legacy in his field.

Research topics

• Sociology
• Computer Science
• Anthropology
• Electrical engineering
• Engineering
• Reliability engineering
• Electronic engineering
• Cognitive psychology
• Social psychology
• Operating system

Selected publications

• An Algorithmic Framework for Performing Collaborative Filtering

  ACM SIGIR Forum · 2017-08-02 · 2555 citations

  articleSenior author

  column Share on An Algorithmic Framework for Performing Collaborative Filtering Authors: Jonathan L. Herlocker University of Minnesota University of MinnesotaView Profile , Joseph A. Konstan University of Minnesota University of MinnesotaView Profile , Al Borchers University of Minnesota University of MinnesotaView Profile , John Riedl University of Minnesota University of MinnesotaView Profile Authors Info & Claims ACM SIGIR ForumVolume 51Issue 2July 2017 pp 227–234https://doi.org/10.1145/31303…

  PublisherDOI

• The Rise and Decline of an Open Collaboration System

  American Behavioral Scientist · 2012-12-28 · 351 citations

  articleSenior author

  Open collaboration systems, such as Wikipedia, need to maintain a pool of volunteer contributors to remain relevant. Wikipedia was created through a tremendous number of contributions by millions of contributors. However, recent research has shown that the number of active contributors in Wikipedia has been declining steadily for years and suggests that a sharp decline in the retention of newcomers is the cause. This article presents data that show how several changes the Wikipedia community mad…

  PublisherDOI

• The identification of deviance and its impact on retention in a multiplayer game

  2014-02-07 · 138 citations

  articleSenior author

  Deviant behavior in online social systems is a difficult problem to address. Consequences of deviance include driving off users and tarnishing the system's public image. We present an examination of these concepts in a popular online game, League of Legends. Using a large collection of game records and player-given feedback, we develop a metric, toxicity index, to identify deviant players. We then look at the effects of interacting with deviant players, including effects on retention. We find th…

  PublisherDOI

• The Impact and Evolution of Group Diversity in Online Open Collaboration

  Management Science · 2015-08-28 · 106 citations

  articleSenior author

  Online open collaboration efforts, such as Wikipedia articles and open source software development, often involve a large crowd with diverse experiences and interests. Diversity, on the one hand, facilitates the access to and integration of a wide variety of information; on the other hand, it may cause conflict and hurt group performance. Although diversity’s effects have been the subject of many studies in offline work groups (with the results remaining inconclusive), its effects in online self…

  PublisherDOI

• Tell me more

  2013-08-05 · 106 citations

  articleSenior author

  In this paper we address the problem of developing actionable quality models for Wikipedia, models whose features directly suggest strategies for improving the quality of a given article. We first survey the literature in order to understand the notion of article quality in the context of Wikipedia and existing approaches to automatically assess article quality. We then develop classification models with varying combinations of more or less actionable features, and find that a model that only co…

  PublisherDOI

Recent grants

• Helping Hands: Computer Support for Community-Maintained Artifacts of Lasting Value

  NSF · $642k · 2005–2009

Frequent coauthors

• Joseph A. Konstan

  University of Minnesota

  62 shared

• Shyong K. Lam

  University of Minnesota

  28 shared

• Ernest F. Retzel

  University of Minnesota Medical Center

  19 shared

• Al Mamunur Rashid

  18 shared

• Bharat Bhargava

  Purdue University West Lafayette

  17 shared

• Shilad Sen

  Microsoft (United States)

  15 shared

• Elizabeth Shoop

  Macalester College

  14 shared

• John V. Carlis

  University of Minnesota

  14 shared

Labs

• In Memoriam: John RiedlPI

Awards & honors

• 2010 ACM Software System Award
• George Taylor Award for Exceptional Contributions to Teachin…
• McKnight Distinguished Professorship

Similar researchers at University of Minnesota

• Dan Knightsh-97
• Yousef Saadh-81