• Publications
  • Influence
Want to be Retweeted? Large Scale Analytics on Factors Impacting Retweet in Twitter Network
TLDR
It is found that, amongst content features, URLs and hashtags have strong relationships with retweetability and the number of followers and followees as well as the age of the account seem to affect retweetability, while, interestingly, thenumber of past tweets does not predict retweetability of a user's tweet.
Crowdsourcing user studies with Mechanical Turk
TLDR
Although micro-task markets have great potential for rapidly collecting user measurements at low costs, it is found that special care is needed in formulating tasks in order to harness the capabilities of the approach.
Tweets from Justin Bieber's heart: the dynamics of the location field in user profiles
TLDR
The first in-depth study of user behavior with regard to the location field in Twitter user profiles found that a user's country and state can in fact be determined easily with decent accuracy, indicating that users implicitly reveal location information, with or without realizing it.
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.
Automatic thumbnail cropping and its effectiveness
TLDR
This work studies the ability of computer vision systems to detect key components of images so that automated cropping, prior to shrinking, can render objects more recognizable, and evaluates automatic cropping techniques based on a general method that detects salient portions of images.
The singularity is not near: slowing growth of Wikipedia
TLDR
It is shown that recent editing activity suggests that Wikipedia growth has slowed, and perhaps plateaued, indicating that it may have come against its limits to growth.
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.
What's in Wikipedia?: mapping topics and conflict using socially annotated category structure
TLDR
A mapping technique is introduced that takes advantage of socially-annotated hierarchical categories while dealing with the inconsistencies and noise inherent in the distributed way that they are generated in Wikipedia.
Finding Credible Information Sources in Social Networks Based on Content and Social Structure
TLDR
The study indicates that both the topical content of information sources and social network structure affect source credibility, and designs a novel method of automatically identifying and ranking social network users according to their relevance and expertise for a given topic.
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