Bhagyesh Kumar (@invi-bhagyesh)

I am currently a sophomore in Department of Mathematics at MIT Manipal, majoring in Mathematics and Computing. I am working as a student researcher with Mars Rover Manipal (MRM) AI Research.


I’ve previously worked on adversarial attacks, which led to my interest in trustworthy machine learning. I’m especially curious about how robustness and reliability connect to AI safety. I’m still new to the AI safety space, but I’m actively learning and building a solid foundation in the area.

Publications

Computer Vision • AAAI 2026
TopoReformer: Mitigating Adversarial Attacks Using Topological Purification in OCR Models

Bhagyesh Kumar*, A S Aravinthakshan*, Akshat Satyanarayan*, Ishaan Gakhar, Ujjwal Verma
AAAI 2026 Workshop on AI for Cyber Security

TopoReformer Architecture

Experience

Research
MRM Research

Student Researcher working on Adversarial Robustness and Mechanistic Interpretability.

Research
EleutherAI: Summer of Open AI Research

Worked on ShareLM project under PhD candidate Shachar Don-Yehiya (Hebrew University).

Volunteer

Community
Perplexity

Growth

Community
Notion

Campus Leader

Selected Work

LLMs
Adaptive Safety Calibration via Representation Engineering

A representation-engineering framework that probes and intervenes on internal harmfulness and refusal signals in LLMs to calibrate safety behavior

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LLMs
LM-quant

Benchmarking SLMs on quantization and RLHF effects to measure bias and fairness across standard evaluation datasets.

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LLMs
LM-collusion

Simulation of LLM agent collusion under Cournot competition strategies.

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How I fail

  • Nov 2025, AAAI Undergraduate Consortium Proposal not accepted
  • Oct 2025, Toporeformer(v1) rejected from NeurIPS Workshop 2025

Recent highlights

  • Nov 2025, Received $1000 scholarship to present my work at AAAI
  • Nov 2025, TopoReformer(v2) accepted at AAAI Workshop 2026