• Publications
  • Influence
He says, she says: conflict and coordination in Wikipedia
TLDR
The growth of non-direct work in Wikipedia is examined and the development of tools to characterize conflict and coordination costs in Wikipedia are described, which may inform the design of new collaborative knowledge systems.
Power of the Few vs . Wisdom of the Crowd : Wikipedia and the Rise of the Bourgeoisie
TLDR
Although Wikipedia was driven by the influence of “elite” users early on, more recently there has been a dramatic shift in workload to the “common” user, and this is shown in del.icio.us, a very different type of social collaborative knowledge system.
Lifting the veil: improving accountability and social transparency in Wikipedia with wikidashboard
TLDR
A social dynamic analysis tool called WikiDashboard is described which aims to improve social transparency and accountability on Wikipedia articles, and early reactions from users suggest that the increased transparency afforded by the tool can improve the interpretation, communication, and trustworthiness of Wikipedia articles.
Herding the cats: the influence of groups in coordinating peer production
TLDR
Examination of Wikipedia, a highly successful peer production system, finds a significant and growing influence of group structure, and suggests that group influence can play an important role in maintaining the health of online communities, even when such communities are putatively self-directed peer production systems.
Modeling Content from Human-Verified Blacklists for Accurate Zero-Hour Phish Detection
TLDR
The key insight behind the algorithms is to leverage existing human-verified whitelists and blacklists, and relax them via probabilistic methods to attain high true positive rates while maintaining extremely low false positive rates.
Us vs. Them: Understanding Social Dynamics in Wikipedia with Revert Graph Visualizations
TLDR
Revert Graph is constructed, a tool that visualizes the overall conflict patterns between groups of users and enables visual analysis of opinion groups and rapid interactive exploration of those relationships via detail drill- downs.
Augmented Social Cognition
TLDR
It is found that analyses of conflicts and coordination in Wikipedia have shown the scientific need to understand social sensemaking environments and information theoretic analyses of social tagging behavior in del.icio.us shows the need to understanding human vocabulary systems.
Smartening the crowds: computational techniques for improving human verification to fight phishing scams
TLDR
Novel techniques for combating the phishing problem using computational techniques to improve human effort are explored, and it is found that these techniques could increase coverage over and were significantly faster than existing blacklists used today.
WebTicket: account management using printable tokens
TLDR
WebTicket is introduced, a low cost, easy-to-use and reliable web account management system that uses "tickets", which are tokens that contain a two-dimensional barcode that can be printed or stored on smartphones.
A Hierarchical Adaptive Probabilistic Approach for Zero Hour Phish Detection
TLDR
The key insight behind the detection algorithm is to leverage existing human-verified blacklists and apply the shingling technique, a popular near-duplicate detection algorithm used by search engines, to detect phish in a probabilistic fashion with very high accuracy.
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