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Research Projects

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

TrimDroid is a novel combinatorial approach for generating GUI system tests for Android apps.

TrimDroid is comprised of four major components: Model Extraction, Dependency Extraction, Sequence Generation, and Test-Case Generation. Together, these components produce a significantly smaller number of test cases than exhaustive combinatorial technique, yet achieve a comparable coverage.

Research Area(s): 
Project Dates: 
March 2015

The rising popularity of mobile apps deployed on battery-constrained devices underlines the need for effectively evaluating their energy properties. However, currently there is a lack of testing tools for evaluating the energy properties of apps. As a result, for energy testing, developers are relying on tests intended for evaluating the functional correctness of apps. Such tests may not be adequate for revealing energy defects and inefficiencies in apps.

Research Area(s): 
Project Dates: 
January 2017

Software designers frequently sketch when they design, particularly during the early phases of exploration of a design problem and its solution. In so doing, they shun formal design tools, opting for the whiteboard of pen/paper instead.  Calico is a sketch-based distributed software design tool that supports software designers with a variety of features that improve over the use of just pen-and-paper or a regular whiteboard, and are tailored specifically for early software design on tablets and electronic whiteboards.

Project Dates: 
January 2007

The dynamic nature of markets wherein business relationships are established and dissolved continuously demands systems that can cope with constant change, and do so with security paramount. These relationships are reified as services  that are offered by organizations and used  within a spectrum of domains and use contexts. Current service technologies fail to meet the requirements, however; interfaces are rigid, non-secure, and “one-size-fits-all solutions” which hardly meet the demands of any of its users.

Project Dates: 
July 2007

We developed a token-based approach for large scale code clone detection which is based on a filtering heuristic that reduces the number of token comparisons when the two code blocks are compared. We also developed a MapReduce based parallel algorithm that uses the filtering heuristic and scales to thousands of projects. The filtering heuristic is generic and can also be used in conjunction with other token-based approaches. In that context, we demonstrated how it can increase the retrieval speed and decrease the memory usage of the index-based approaches.

Project Dates: 
July 2011 to January 2014

This research addresses challenges in understanding and developing lightweight, Web-based informal music education environments that bring the complexity and joy of orchestral music to diverse audiences. The challenges span from providing awareness and appreciation of different classical music genres through creation of multi-instrument musical compositions, in ways that are fun and interactive.

Project Dates: 
January 2011

Trust remains a key challenge for globally distributed teams despite decades of research. Awareness, a key component of collaboration, has even more research around it. However, detailed accounts of the interrelationship of awareness and trust are still lacking in the literature, particularly in the setting of software teams. The gap we seek to fill with this article is to examine how software tool support for awareness can engender trust among globally distributed software developers.

Project Dates: 
January 2013

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