I am a Computer Science 4th year undergraduate student @ University of Cyprus, graduating in June 2026.
Email: akosti02 [at] ucy (dot) ac (dot) cyGithub
Google Scholar
Interests.
My main interests are natural language processing, artificial intelligence, machine learning, and distributed systems. Particularly, I am interested in:- Optimization methods for machine learning, including scalable, distributed, and collaborative training approaches
- Energy and resource efficiency in training and deployment of large-scale machine learning and AI systems
Experience.
Full Stack Engineering Intern @NetU, Nicosia, Cyprus [July 2025 - September 2025]
Contributed to numerous governmental and private sector projects, implementing new features, webpages, and APIs (React, Typescript, .NET, SQL, JSP)
Research Intern (UGRIP) @MBZUAI, Abu Dhabi, UAE [June 2025 - July 2025]
Under the supervision of Dr. Maxim Panov explored whether introducing Chain-of-Thought prompting into QA tasks can enhance the performance of Uncertainty Quantification techniques on LLM responses, contributed to the open-source lm-polygraph library
Part-time Student researcher @LInC, UCY [July 2023 - Present]
Focused on developing LLM pipelines leveraging prompt engineering, and HPC infrastructure for multiple domains,
trained ML, DL models for large-scale text classification and sentiment analysis.
AI Summer Scholar @TAMUQ, Doha, Qatar [May 2024 - June 2024] (2 weeks)
Attended lectures on AI foundations, trained a Stable Diffusion model for image generation, delivered a presentation on its theoretical foundations.
Research Intern @LInC, UCY [May 2023 - July 2023]
Explored gender bias in LLM startup sponsorship recommendations, conducted comparative analysis with BERT for sponsorship offer classification
Publications and Preprints.
Arina Kostina, Marios D. Dikaiakos, Dimosthenis Stefanidis, George Pallis. (2024). Large Language Models For Text Classification: Case Study And Comprehensive Review. 6th Summit GEC '24. Available as arxiv preprint. [PDF]
Antonia Voutouri, Arina Kostina, Panagiotis Menelaou, Michaella Bratsa, Spyridon Sachmpazidis. (2024). Overview of AI and Machine Learning in Healthcare. [PDF]