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Shahan Ahmed

Computational Social Science · Data-Centric AI and World Models · Complex Systems

My research draws on sociology, political science, computational social science, and social network analysis to study complex social systems and public policy. I am increasingly focused on integrating data from multiple sources to develop multidimensional datasets for world models.

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Upcoming Conference Presentations

Reddit Community Interventions and Cross-Platform Response: Migration and Policy-Response Discourse on Voat

Accepted at IDeaS 2026 · Carnegie Mellon University · October 12–14, 2026

Preprint →

Threat Amplified, Blame Restrained: LLM-Assisted Media Framing Analysis of the 2026 Bangladesh Measles Outbreak

Accepted at CSS 2026 · Santa Fe, New Mexico · October 29–November 1, 2026

Preprint →

Research Interests

  • •Computational Social Science
  • •Natural Language Processing & Text Classification
  • •Adversarial Machine Learning & Robustness
  • •Healthcare & Public Health Analytics
  • •Data Infrastructure for Social Research
  • •Social and Information Networks

some recent projects

Social Engineering & Adversarial Obfuscation in BEC Attacks

2026 · 95.4% detection accuracy

A character-level classifier flagging Business Email Compromise attempts obfuscated with Unicode homoglyphs and zero-width characters.

[View results]

Robustness of Phishing Detection Under Adversarial Unicode Obfuscation

2026 · 99.8% accuracy

An evaluation of a TF-IDF and logistic regression classifier's robustness to adversarially obfuscated phishing emails at test time.

[View results]

OCR Text Classification: DistilBERT vs Longformer-DeBERTa

2026 · Model Benchmarking

A comparison of transformer architectures on OCR-extracted document classification by F1 score, latency, and memory footprint.

[View results]

Ongoing Projects

  • OpenDataBD: An open data initiative building research infrastructure for public government data on Bangladesh. This is a philanthropic project and accepting help from volunteers.[Visit]

Publications & Presentations