At the Artificial Intelligence Department, a public presentation of the dissertation by Roman Mykolaiovych Lavrynenko took place.

11 April 2026

April 10, 2025, the Artificial Intelligence Department of the Kharkiv National University of Radio Electronics hosted another scientific seminar dedicated to the public presentation of the dissertation results by Roman Mykolaiovych Lavrynenko.

Topic and Scientific Novelty

The candidate presented research on the topic:
“Methods of Intelligent Time Series Analysis with Properties of Fractional Brownian Motion,”
submitted for obtaining the Doctor of Philosophy (PhD) degree in specialty 122 “Computer Science.”

The scientific advisor is PhD in Technical Sciences, Associate Professor, Professor of the AI Department — Nataliia Volodymyrivna Riabova.

During the presentation, Roman Lavrynenko раскрыed the essence of five developed and improved methods. Particular attention was given to:

A differentiable neural network layer HurstEE for estimating the Hurst exponent
A modification of the Hosking method for generating time series continuations
An ensemble method for correcting systematic bias in small-sample estimates

Discussion and Expert Evaluation

The seminar was chaired by the Head of the AI Department,
PhD in Technical Sciences, Associate Professor — Larysa Ernestivna Chala,
with the participation of 21 researchers from the department and invited leading specialists from other universities.

Department experts, PhD, Associate Professors Vadym Leonidovych Sherhin and Oleksandra Valeriivna Vitko, noted the high level of scientific maturity of the candidate. In particular, they emphasized:

The relevance of the work in the context of Explainable AI
Successful validation of results in four publications in Q1 and Q2 journals (Scopus and Web of Science)

Professors V.O. Filatov and Ye.V. Bodyanskyi also supported the work, highlighting its theoretical and practical value.

Seminar Results

Based on the discussion, the department concluded that the work demonstrates scientific novelty and practical significance and recommended the dissertation for defense.

It was also proposed to approve the composition of a one-time specialized academic council:

Chair of the Council:
Kyrylo Serhiiovych Smeliakov — Doctor of Technical Sciences, Professor, Head of the Department of Software Engineering, Kharkiv National University of Radio Electronics, Ministry of Education and Science of Ukraine

Reviewers:

Oleksandra Valeriivna Vitko — PhD, Associate Professor, Artificial Intelligence Department, Kharkiv National University of Radio Electronics
Vadym Leonidovych Sherhin — PhD, Associate Professor, Artificial Intelligence Department, Kharkiv National University of Radio Electronics

Opponents:

Ivan Viktorovych Izonin — Doctor of Technical Sciences, Associate Professor, Artificial Intelligence Department Systems, Lviv Polytechnic National University
Serhii Ihorovych Vladov — Doctor of Technical Sciences, Leading Researcher, Department of Scientific Activity Organization, Professor of the Department of Cybercrime Counteraction, Kharkiv National University of Internal Affairs
Conclusion

We congratulate Roman Mykolaiovych and his scientific advisor on the successful presentation of the research results and wish them a successful dissertation defense!