2017
Accepted into Google's ML Ninja Rotation program - One among 30 Googlers selected from applications across the company.
2015
Winner of the Data Mining Challenge, Qualcomm Technologies Inc.
ROCStar Award for Outstanding Contributions to the design of LTE/Wi-Fi Coexistence Algorithms, Qualcomm Technologies Inc.
2010
Best Final Year Thesis Award, Department of ECE, Anna University
Best Outgoing Student, Department of ECE, Anna University
Engineering College Gold Medal for Outstanding Academic Achievement, Anna University
Stood 1st among 300+ students in the ECE undergraduate program, Anna University
2009
Certificate of Excellence for Outstanding Academic Achievement, Anna University
2005
Secured State Rank #3 and awarded Gold Medal in the LG 8th National Science Olympiad
30+ patents granted: go/nachi-filed-patents
40+ patents pending: go/nachi-pending-patents
P. Li, J. He, G. Li, R. Bhargava, S. Shen, N. Valliappan, Y. Liang, H. Gu, V. Ramachandran, G. Farhadi, Y. Li, K. Kohlhoff, V. Navalpakkam, "UniAR: Unifying Human Attention and Response Prediction on Visual Content", NeurIPS, Dec 2024.
S. Chen, N. Valliappan, S. Shen, X. Ye, K. Kohlhoff, J. He, "Learning From Unique Perspectives: User-Aware Saliency Modeling", IEEE/CVF Conference on Computer Vision and Pattern Recognition, June 2023.
B. Ghazi, J. He, K. Kohlhoff, Ravi Kumar, P. Manurangsi, V. Navalpakkam, N. Valliappan, "Differentially Private Heatmaps", Proceedings of the AAAI Conference on Artificial Intelligence, Nov 2022.
V. W-S. Tseng, N. Valliappan, V. Ramachandran, T. Choudhury & V. Navalpakkam. "Digital biomarker of mental fatigue", Nature Digital Medicine, Mar 2021.
N. Valliappan, N. Dai, E. Steinberg, J. He, K. Rogers, V. Ramachandran, P. Xu, M. Shojaeizadeh, L. Guo, K. Kohlhoff & V. Navalpakkam. "Accelerating eye movement research via accurate and affordable smartphone eye tracking", Nature Communications, Sept 2020.
J. He, K. Pham, N. Valliappan, P. Xu, C. Roberts, D. Lagun, & V. Navalpakkam, 2019. On-device few-shot personalization for real-time gaze estimation. In Proceedings of the IEEE/CVF International Conference on Computer Vision Workshops (pp. 0-0).
N. Valliappan, A. Lozano, R. W. Heath, Jr. “Antenna Subset Modulation for Secure Millimeter-Wave Wireless Communication”, IEEE Transactions on Communications, May 2013.
N. Valliappan, A. Lozano, R. W. Heath, Jr. “Antenna Subset Modulation for Secure Millimeter-Wave Wireless Communication”, GLOBECOM Workshop on Trusted Communications with Physical Layer Security (TCPLS), Dec 2013.