• Publications
  • Influence
Evaluating collaborative filtering recommender systems
TLDR
The key decisions in evaluating collaborative filtering recommender systems are reviewed: the user tasks being evaluated, the types of analysis and datasets being used, the ways in which prediction quality is measured, the evaluation of prediction attributes other than quality, and the user-based evaluation of the system as a whole.
Building Member Attachment in Online Communities: Applying Theories of Group Identity and Interpersonal Bonds
TLDR
This research illustrates how theory from the social science literature can be applied to gain a more systematic understanding of online communities and how theory-inspired features can improve their success.
Creating, destroying, and restoring value in wikipedia
TLDR
The notion of the impact of an edit, measured by the number of times the edited version is viewed, is introduced, and it is shown that an overwhelming majority of the viewed words were written by frequent editors and that this majority is increasing.
Using social psychology to motivate contributions to online communities
TLDR
Social psychology theories of social loafing and goal-setting can provide mid-level design principles to address under-contribution in online communities, and these principles were tested in two field experiments.
"Blissfully Happy" or "Ready toFight": Varying Interpretations of Emoji
TLDR
This work analyzes the variance in interpretation of the emoji, quantifying which emoji are most (and least) likely to be misinterpreted, and finds significant potential for miscommunication.
Social matching: A framework and research agenda
TLDR
The scope of social matching systems is clarified by distinguishing them from other recommender systems and related systems and techniques and shows how existing systems explore different points within the design space.
Using Social Psychology to Motivate Contributions to Online Communities
TLDR
Design principles derived from social psychology theories of social loafing and goal-setting were tested in four field experiments involving members of an online movie recommender community, finding that individuals contributed when they was reminded of their uniqueness and when they were given specific and challenging goals.
Foundational issues in artificial intelligence and cognitive science - impasse and solution
TLDR
This treatise discusses Interactivism and Connectionism, an alternative to Encodingism, and the implications for Foundational Mathematics of AI and Cognitive Science.
Wikipedians are born, not made: a study of power editors on Wikipedia
TLDR
The results suggest a design opportunity: customizing the initial user experience to improve retention and channel new users' intense energy over the course of their career.
...
...