Shubhajit Roy

About

I am currently pursuing my PhD in Computer Science and Engineering at IIT Gandhinagar, working under the guidance of Prof. Anirban Dasgupta. My research focuses on Graph Neural Networks, particularly addressing challenges in expressivity and inference optimization.

During summer 2026, I am interning at IBM Research - Bangalore as a Research Intern in the Platforms in AI team, working on scalability and optimization of AI systems.

Prior to my PhD, I completed my M.Sc in Mathematics and Computing with a major in Computer Science from the Indian Association for the Cultivation of Science (IACS), and my B.Sc in Mathematics from Presidency University.

My current research involves developing novel approaches to improve GNN expressivity beyond the Weisfeiler-Leman hierarchy and creating efficient inference methods through graph coarsening techniques. I am particularly interested in applications of GNNs to weather prediction, social network analysis, and knowledge graph construction.

Employment

• IBM (India) Research Intern
  2026 - 2026

Education

• Indian Institute of Technology Gandhinagar PhD
  2022 - Present

Projects & Funding

Projects & funding information is unavailable.

Publications (3)

• 'Si'multaneous 'S'patial-'T'emporal Message Passing for Dynamic Graph Representation Learning
  2026 DOI: 10.48550/ARXIV.2605.25548
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• Local Fragments, Global Gains: Subgraph Counting using Graph Neural Networks
  ACM International Conference on Web Search and Data Mining 2026 DOI: 10.1145/3779211.3793168
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• FIT-GNN: Faster Inference Time for GNNs that 'FIT' in Memory Using Coarsening
  Transactions on Machine Learning Research 2026 DOI: 10.48550/ARXIV.2410.15001
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