2017  |  2016  |  2015  |  2014  |  2013  |  2012  |  2011  |  2010  |  2009  |  2008  |  2007  |  2006  |  2005  |  2004  |  2003  |  2002  |  2001  |  2000

Research Projects

Anti-social behavior such as flaming and griefing is pervasive and problematic in many online venues. This behavior breaks established norms and unsettles the well-being and development of online communities. In a popular online game, Riot Games's League of Legends, the game company received tens of thousands of complaints about others every day. To regulate what they call "toxic" behavior, Riot devised the "Tribunal" system as a way of letting the community to police itself. The Tribunal is a crowdsoucing system that empowers players to identify and judge misbehavior.

Project Dates: 
April 2012

One method of facilitating developers to understand the complex inner nature of software that we have employed is the use of information visualization. Software is often so complex that even the developers who initially created it cannot understand all of the possible runtime behaviors that it can exhibit --- specifically, all of the bugs that it may contain. In order to present large code bases with innumerable characteristics and relationships of its components (e.g., instructions, variables, values, and timings) we have developed a number of novel visualizations of software.

Research Area(s): 
Project Dates: 
May 2001

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

When a live site is down or time is of the essence, software teams mobilize to fix bugs as fast as possible. How might such important bugs be fixed more quickly? One answer is through crowdsourcing, where ad-hoc participants are each given small, self-contained microtasks that are then aggregated into an overall solution. To explore this idea, we are currently designing new techniques and tools for crowd debugging.

Research Area(s): 
Project Dates: 
January 2013

The development of a software system is now ever more frequently a part of a larger development effort, including multiple software systems that co-exist in the same environment: a software ecosystem. Though most studies of the evolution of software have focused on a single software system, there is much that we can learn from the analysis of a set of interrelated systems. Topic modeling techniques show promise for mining the data stored in software repositories to understand the evolution of a system.

Project Dates: 
September 2012

Spacetime is a framework for developing time-stepped, multi-worker applications based on the tuplespace model. Workers compute within spacetimed frames -- a fixed portion of the shared data during a fixed period of time. The locally modified data may be pushed back to the shared store at the end of each step.

Research Area(s): 
Project Dates: 
January 2015

Research shows that sharing one’s location can help people stay connected, coordinate daily activities, and provide a sense of comfort and safety [1]. Recently, smartphones and location-based services (LBS) have become widely available in developed countries [7], but only a small percentage of smartphone users have ever tried sharing lo­cation with other people [8]. Our work aims to understand real-world factors shaping behaviors and attitudes towards social location-sharing, especially in regards to why people avoid or abandon the technology, or limit their usage.

Research Area(s): 
Project Dates: 
May 2009

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

Pages