Nilavra Bhattacharya   |   নীলাভ্র ভট্টাচার্য্য 

 How to pronounce my names?     NILAVRA      BHATTACHARYA (Voice Courtesy: Google Translate)

Selfie at the Lakefront Trail, Chicago, IL, USA
Lakefront Trail, Chicago, IL, USA

I am a PhD student in the Information eXperience lab (IX Lab) at The University of Texas at Austin. I am supervised by Dr. Jacek Gwizdka.

I study how people find, evaluate, and consume information online; and how we can improve this overall information experience. I use eye-tracking, EEG, and GSR (which fall under the umbrella of Neuro-Physiological methods) to observe people’s behaviour as they interact with online information. These bio-signals help us to understand, model, and predict various aspects of human information-behaviour, such as relevance-judgement, knowledge-gain, and mental workload. My broader vision is to use these bio-signals as real-time, implicit-feedback mechanisms for next-generation interactive computing systems.

My research interests span human-computer interaction (HCI), interactive information retrieval (IIR), and machine learning, and Neuro-Information Science.

Google Scholar has the most up-to-date list of my publications. You can also find them in my CV.


  • 2019.12: My photograph of the Casa Milà in Barcelona is selected for UT Austin’s “2020 Texas Global Calendar” (UT News report).


  • 2019.12: Our paper Relevance Prediction from Eye-movements Using Semi-interpretable Convolutional Neural Networks accepted at 2020 ACM Conference on Human Information Interaction Retrieval (CHIIR 2020) at Vancouver, Canada.


  • 2019.07: Our paper titled Why Does a Visual Question Have Different Answers? accepted at 2019 IEEE Internation Conference on Computer Vision (ICCV 2019) at Seoul, Korea.


  • 2019.03: Our paper Analyzing Gaze Transition Behavior Using Bayesian Mixed Effects Markov Models accepted at 2019 ACM Symposium on Eye Tracking Research & Applications (ETRA 2019) at Denver, Colorado, USA. Best Short Paper Award.



  • 2018.11: Our paper Measuring Learning During Search: Differences in Interactions, Eye-Gaze, and Semantic Similarity to Expert Knowledge accepted at 2019 ACM Conference on Human Information Interaction Retrieval (CHIIR 2019) at Glasgow, Scotland, UK.

The institutions I have called ‘Home’ over the years:

Texas iSchool
PhD Student
Aug ’17 – present

IT Dept., CESC Limited
Software Engineer
Aug ’15 – Jul ’17

(India’s first power utility. Registered in 1897 in London)

IIEST Shibpur
BE (Comp. Sci. & Tech.)
Jul ’11 – May ’15

(arguably India’s second oldest engineering college)

M. H. Memorial School
ICSE (Std X), ISC (Std XII)
Apr ’99 – Mar ’11