Research

On-going projects:


μEMA: Microinteractions-based ecological momentary assessment

μEMA (micro-EMA) is microinteractions-based ecological momentary assessment (EMA) tool for digital phenotyping where all the EMA prompts are reduced to single questions with a “Yes/No” type answer. These self-report prompts can be responded to using quick glanceable microinteractions that take ~2s (like checking the time on the watch). With this cognitive simplicity, μEMA could gather self-reported behavioral data with much higher temporal density than traditional EMA. Read more …

 


Human-computation game for sensor data annotation

In this project, we are designing human-computation games to crowdsource annotations on raw accelerometer data. These games could enable activity recognition researchers to generate training datasets from the real-world acceleration data with the help of casual game players. We are conducting pilot evaluations of these games on Amazon Mechanical Turk. Read more …

 

 

Past projects:


Mix-WILD: A freeware program for mixed model analysis with intensive longitudinal data

Mixed-WILD is a statistical software designed to perform multilevel modeling (with mixed effects) on longitudinal experience sampling data. MixWILD tests the effects of subject-level parameters (variance and slope) of time-varying variables, specifically in the context of studies using intensive sampling methods, such as Ecological Momentary Assessments. Instead of using programming interfaces such as SAS NLMIXED or R, MixWILD allows researchers to use a drag-and-drop GUI to build complex multilevel models. Read more …

 


Sideline: An in situ concussion assessment tool

Sideline allows parents, coaches of informal sports clubs, and players to assess the possibility of a concussion on the sports field. It is implemented on the Android platform using clinically approved symptom assessments, working memory tests, visual memory tests, reaction time tests, and physical balance tests. This app also generates image recognition friendly pupil images for more objective concussion assessment tools. Read more …

 


Finding Astro: Mobile exergame to promote physical activity

Finding Astro is an Android-based experimental exergame intended to promote small bouts of physical activity among young children. The player finds a missing astronaut in space by moving the smartphone in 3-D space. The direction of the motion is directed by specific exercise moves designed to induce exertion. Read more …

 

 


On the move: A social ride-sharing application for community organizers in Greater Boston

“On the move” is a social ridesharing web-application (optimized for mobile) that allows community organizers of Union Capital Boston to attend community events together. Union Capital Boston is a non-profit organization that rewards individuals for community involvement. This application is a part of a large study to understand the needs of community organizers in Boston Area. Read more …

 

 


User experience (UX) research at Samsung Electronics

As a UX researcher, I worked on a variety of projects at Samsung electronics in the areas of personal health, text input, media-multitasking, and smartphones for re-emerging markets. Here, I discuss briefly some of the work done during my stint there. Read more …

 

 


Digital chameleons: Investigating the effect of mimicry by a virtual agent

As part of my research internship at the Eindhoven University of Technology (TU/e), The Netherlands, I carried out a between-subject experiment to study the effect of mimicry by a virtual agent on user’s perceived trustworthiness. This study establishes that social mimicry (like mimicking the head movements) results in higher trust on the agent, which is mediated through the liking for that agent. Read more …