İbrahim Bahadır Altun

University at Buffalo
ialtun@buffalo.edu

About Me

My research combines temporal network analysis with statistical modeling to study the evolution of complex systems.

Research Interests

Temporal Networks: temporal link prediction, stochastic processes, graph neural networks
Computational Social Science: social networks, fraud detection, misinformation spread

Publications

ASONAM

Temporal motifs for financial networks: A study on Mercari, JPMC, and Venmo platforms

Penghang Liu, Bahadir Altun, Rupam Acharyya, Robert E. Tillman, Shunya Kimura, Naoki Masuda, and Ahmet Erdem Sarıyüce

IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), 2025.

PDF Code

arXiv

GenTREC: The First Test Collection Generated by Large Language Models for Evaluating Information Retrieval Systems

Mehmet Deniz Türkmen, Mucahid Kutlu, Bahadir Altun, and Gokalp Cosgun

arXiv preprint arXiv:2501.02408, 2025.

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CLEF

Fight Against Misinformation on Social Media: Detecting Attention-Worthy and Harmful Tweets and Verifiable and Check-Worthy Claims

Ahmet Bahadir Eyuboglu, Bahadir Altun, Mustafa Bora Arslan, Ekrem Sonmezer, and Mucahid Kutlu

International Conference of the Cross-Language Evaluation Forum for European Languages (CLEF), 2023.

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ICWSM

Catch Me If You Can: Deceiving Stance Detection and Geotagging Models to Protect Privacy of Individuals on Twitter

Dilara Dogan, Bahadir Altun, Muhammed Said Zengin, Mucahid Kutlu, and Tamer Elsayed

Proceedings of the International AAAI Conference on Web and Social Media (ICWSM), 2023.

PDF Code ICWSM Student Travel Grant

CIKM

Building test collections using bandit techniques: a reproducibility study

Bahadir Altun and Mucahid Kutlu

Proceedings of the 29th ACM International Conference on Information & Knowledge Management (CIKM), 2020.

PDF Code SIGIR Student Travel Grant

CLEF

TOBB-ETU at CLEF 2019: Prioritizing claims based on check-worthiness

Bahadır Altun and Mücahid Kutlu

CEUR Workshop Proceedings, 2019.

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Teaching Experience

Graduate Teaching Assistant, University at Buffalo (2023–Present)

Algorithm Analysis and Design
Algorithms for Modern Computing Systems
Introduction to Machine Learning

Instructor, TÜBİTAK National Olympiad Camps (2018–2021)

Advanced Algorithms and Data Structures

Services

Web Co-Chair, International AAAI Conference on Web and Social Media (ICWSM), 2024
Problem Setter and Exam Invigilator, TÜBİTAK National Olympiads in Informatics, 2018–2021

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