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Research Projects

The fantasy genre has captivated our attention in popular media for decades, providing us with inspiring imagery of valiant fighters and enchanting spell casters.  Guild Wars 2, a massively multiplayer online game (MMO), introduces a range of races and characters not found in the traditional fantasy genre.  When first experiencing a new fantasy world, does knowledge and information gained from previously consumed media influence players’ interpretations of new fantasy environments?

Research Area(s): 
Project Dates: 
January 2013

Android is the dominant mobile platform with 85% market share, as of the first quarter of 2017. At the same time, the number and sophistication of malicious Android apps are increasin.

Research Area(s): 
Project Dates: 
July 2017

Socio-emotional content is vital for building trusting, productive relationships that go beyond task-oriented communication in teams. But for distributed collaborators, it is challenging to communicate emotional status because of working over a distance. We propose to use non-work-related, non-competitive, and playful drawing online to encourage nonverbal expressions of emotions and interactions.

Project Dates: 
January 2015

The rising popularity of mobile apps deployed on battery-constrained devices has motivated the need for effective energy-aware testing techniques. Energy testing is generally more labor intensive and expensive than functional testing, as tests need to be executed in the deployment environment, specialized equipment needs to be used to collect energy measurements, etc. Currently, there is a dearth of automatic mobile testing techniques that consider energy as a program property of interest.

Research Area(s): 
Project Dates: 
September 2015

Yelp reviews and ratings are important source of information to make informed decisions about a venue. We conjecture that further classification of yelp reviews into relevant categories can help users to make an informed decision based on their personal preferences for categories. Moreover, this aspect is especially useful when users do not have time to read many reviews to infer the popularity of venues across these categories.

Research Area(s): 
Project Dates: 
January 2011 to February 2019

In addition to the dynamic nature of software while executing, this dynamism extends to the evolution of the software's code itself. The software's evolution is often captured in its entirety by revision-control systems (such as CVS, Subversion, and Git). By utilizing this rich artifact, as well as other historical artifacts (e.g., bug-tracking systems and mailing lists), we can offer a number of techniques for recommending future actions to developers.

Project Dates: 
August 2011

Previous studies have shown that there is a non-trivial amount of duplication in source code. We analyzed a corpus of 2.6 million non-fork projects hosted on GitHub representing over 258 million files written in Java, C++ Python and JavaScript. We found that this corpus has a mere 54 million unique files. In other words, 79% of the code on GitHub consists of clones of previously created files. There is considerable variation between language ecosystems. JavaScript has the highest rate of file duplication, only 7% of the files are distinct.

Project Dates: 
January 2017

Scientists are always working to determine which articles are interesting to them, timely, and relevant to their research. If working in an unfamiliar research area, searching for papers becomes even more difficult. By allowing users to vote on the prominence of links, social news sites like Slashdot, Digg, and reddit.com have addressed the issue of surfacing new and interesting content from across the internet. Moreover, they provide opportunities to provide context and comment on the content.

Research Area(s): 
Project Dates: 
October 2013

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