Research

🔬 Research Experience

Online Facility Assignment with Nonuniform Capacities
April 2025 - Present
Tools: Python, Pandas, NumPy, SciPy, Matplotlib
Investigated the online facility assignment problem with nonuniform facility capacities in metric spaces. Established a reduction from the general setting to the unit-capacity case, simplifying the analysis of greedy algorithms. Derived tighter competitive ratio bounds for algorithms on Euclidean planes and unweighted graphs, extending prior results on uniform capacities. Manuscript under review.
Supervisors: Dr. Reyan Ahmed, Dr. Md. Saidur Rahman
Semantic Search Engine using an Ontology
January 2023 - 2025
Tools: Protege, Neo4j, Django, Python, NumPy, Pandas
Developed a novel ontology for social media influencers to categorize them by audience location, interaction rates, and content types. Later work refined assumptions from the original study by fine-tuning LLaMA2 and applying prompt engineering techniques.
Supervisor: Dr. Muhammad Masroor Ali

📄 Published Papers

Leveraging the Domain Adaptation of Retrieval Augmented Generation Models for Question Answering and for Hallucination Reduction

Published in ITNG 2025

This paper investigates the performance of diverse RAG and RAG-like architectures through domain adaptation and evaluates their ability to generate accurate and relevant responses grounded in contextual knowledge base, with a focus on reducing hallucinations in specialized domains such as customer service.

Recommended citation: Rakin, S., Shibly, M.A.R., Hossain, Z.M., Akbar, M.M., Khan, Z. (2025). Leveraging the Domain Adaptation of Retrieval Augmented Generation Models for Question Answering and for Hallucination Reduction. In: Latifi, S. (eds) The 22nd International Conference on Information Technology-New Generations (ITNG 2025). ITNG 2025. Advances in Intelligent Systems and Computing, vol 1463. Springer, Cham.
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