- Ph.D., University of Illinois at Urbana-Champaign, 1985
- M.S., in Electrical Engineering, State University of New York at StonyBrook, 1982
- B.Tech., in Electronics & Electrical Communication Engineering, Indian Institute of Technology, Kharagpur, India, 1981
Professor of Electrical and Computer Engineering
I joined the department in 1987 and have been a full professor since 1998. Our research interests include smart healthcare, algorithms and architectures for machine learning, counterfactual reasoning, artificial general intelligence, Internet-of-Things (IoT), energy-efficient computing, and cybersecurity. Our current research projects are in the areas of:
- Use of machine learning for predictive, proactive, preventive, and personalized smart healthcare
- Transformer synthesis and acceleration for the edge and cloud
- Synthetic control and intervention: Applications to randomized control trials
- Neuro-symbolic algorithms and architectures
- Optimization through reinforcement learning and transformers
- IoT and cyber-physical system security
The Internet-of-Things (IoT) era promises hundreds of billions of devices or physical objects connected to the Internet. These objects include sensors, actuators, and processing elements that help us gather data, make intelligent decisions, and optimize processes. IoT is expected to have a potential economic impact of $3-6 trillion per year by 2025, with $1-2.5 trillion of this economic impact (its largest fraction) coming from smart healthcare applications. These applications will be enabled by wearable medical sensors (WMSs) that will transmit their information to a personal health hub, such as a smartphone or smartwatch. The sensors and the health hub form a body-area network (BAN). The BAN will communicate with a health server over the Internet, making a complete personal healthcare system possible. The physicians can communicate with the health server to keep track of an individual’s health. However, many challenges remain in making this vision a reality. Our group is exploring the possibility of detecting various diseases in a multi-faceted fashion: (i) using WMSs and machine learning ensembles, (ii) image/video based detection, and (iii) neuro-symbolically.
Transformers have begun to have a pervasive impact in diverse areas like computer vision and natural language processing. However, synthesis of transformers remains an art. We are developing methodologies and tools to automatically synthesize them for the edge while reducing computational resources by several orders of magnitude.
Synthetic control and intervention have wide applications in medicine, policy, sociology, economics, etc. We are using transformers to model synthetic control/intervention spatiotemporally and apply this new approach in the above areas for personalized decision-making and making randomized control trials much more data-efficient.
Neural networks and symbolic AI have complementary advantages. Bringing them together promises learning and reasoning accurately with very small amounts of data. We are developing algorithms and architectures for neuro-symbolic AI.
Many design optimization problems become very challenging because of the combinatorial explosion in the number of design choices available. We are using a combination of reinforcement learning and transformers to address this issue.
We are also investigating IoT and cyber-physical system security from both attack and defense perspectives. The approach covers the complete IoT spectrum: sensor, edge, and cloud.
I have served as the Editor-in-Chief of IEEE Transactions on VLSI Systems. I am currently serving as an Associate Editor of IEEE Transactions on Computer-Aided Design. In the past, I have served as an Associate Editor of IEEE Transactions on Circuits and Systems I & II, IEEE Transactions on Computers, IEEE Transactions on VLSI Systems, IEEE Transactions on Multi-Scale Computing Systems, Journal of Low-Power Electronics, Journal of Nanotechnology, and Journal of Electronic Testing: Theory and Applications. I have served as the Program Chairman of the 1992 Workshop on Fault-Tolerant Parallel and Distributed Systems, the 2004 International Conference on Embedded and Ubiquitous Computing, and the 2010 International Conference on VLSI Design. I have also served as the Director of the Center for Embedded System-on-a-Chip Design funded by the New Jersey Commission on Science and Technology, and as the Associate Director of the Andlinger Center for Energy and the Environment. I have co-authored or co-edited five books: Testing and Reliable Design of CMOS Circuits (Springer, 1990), High-Level Power Analysis and Optimization (Springer, 1998), Testing of Digital Systems (Cambridge University Press, 2003), Switching and Finite Automata Theory, 3rd ed. (Cambridge University Press, 2009), and Nanoelectronic Circuit Design (Springer, 2010). I have also authored or co-authored 15 book chapters and more than 480 technical papers. 21 of my co-authored papers have won various awards or award nominations. These include a paper selected for “The Best of ICCAD: A collection of the best IEEE International Conference on Computer-Aided Design papers of the past 20 years,” two papers by IEEE Micro Magazine as top picks from the 2005 and 2007 Computer Architecture conferences, and two papers as being among the most influential papers of the last 10 years at the IEEE Design Automation and Test in Europe Conference. I have received 25 U.S. patents.
- H. Yin and N. K. Jha, ``A health decision support system based on wearable medical sensors and machine learning ensembles,” IEEE Trans. on Multi-Scale Computing Systems, Oct.-Dec. 2017.
- S. Tuli, B. Dedhia, S. Tuli, and N. K. Jha, ``FlexiBERT: Are current transformer architectures too homogeneous and rigid?” Journal of Artificial Intelligence Research, 2023.
- S. Tuli, C.-H. Li, R. Sharma, and N. K. Jha, ``CODEBench: A neural architecture and hardware accelerator co-design framework,” ACM Trans. on Embedded Computing Systems, 2023.
- T. Saha, N. Aaraj, and N. K. Jha, ``Machine learning assisted security analysis of 5G-network-connected systems,” IEEE Trans. on Emerging Topics in Computing, Oct.-Dec. 2022.
- B. Dedhia, R. Balasubramanian, and N. K. Jha, `` SCouT: Synthetic counterfactuals via spatiotemporal transformers for actionable healthcare,” arXiv:2207.04208v2
Honors and Awards:
- Distinguished Alumnus Award, I.I.T., Kharagpur, India (2014)
- Princeton University Graduate Mentoring Award (2004)
- ACM Fellow (2003)
- IEEE Fellow (1998)
- NEC Preceptorship Award for Research Excellence, School of Engineering & Applied Science, Princeton University (1992)
- NCR Award for Teaching Excellence, Princeton University (1990)
- AT&T Foundation Award for Research Excellence (1990)
- NSF Engineering Initiation Award (1987)
- 21 Best Paper Awards and Nominations