Denys is a Visiting Research Fellow at NYU, advised by Dr. Julia Stoyanovich and working closely with Falaah Arif Khan. He graduated from Ukrainian Catholic University with a B.S. in Computer Science in 2023. His primary research focus revolves around the development of fair, stable, and trustworthy machine learning systems, which strive to consistently bring value to people through effective decision-making processes. In particular, he is interested in responsible artificial intelligence, trustworthy machine learning, distributed systems, and data-processing architectures. Beyond academia, Denys finds solace in staying physically active at the gym, embracing the joy of running, and relishing his passion for reading.
Selected publications
VirnyFlow: A Design Space for Responsible Model Development
Denys Herasymuk, Nazar Protsiv, and Julia Stoyanovich
@article{herasymuk2025virnyflow,title={{VirnyFlow}: A Design Space for Responsible Model Development},author={Herasymuk, Denys and Protsiv, Nazar and Stoyanovich, Julia},year={2025},eprint={2506.01584},archiveprefix={arXiv},journal={CoRR},primaryclass={cs.LG},keywords={working,RAIforUkraine,data}}
Still More Shades of Null: An Evaluation Suite for Responsible Missing Value Imputation
Falaah Arif Khan, Denys Herasymuk, Nazar Protsiv, and Julia Stoyanovich
@article{shades,title={Still More Shades of {Null}: An Evaluation Suite for Responsible Missing Value Imputation},author={{Arif Khan}, Falaah and Herasymuk, Denys and Protsiv, Nazar and Stoyanovich, Julia},year={2025},journal={Proc. {VLDB} Endow.},volume={18},number={9},doi={14778/3746405.3746416},keywords={journal,RAIforUkraine,data}}
Responsible Model Selection with Virny and VirnyView
Denys Herasymuk, Falaah Arif Khan, and Julia Stoyanovich
In Companion of the International Conference on Management of Data,
SIGMOD/PODS, Santiago, Chile 2024
@inproceedings{DBLP:conf/sigmod/HerasymukKS24,author={Herasymuk, Denys and Khan, Falaah Arif and Stoyanovich, Julia},editor={Barcel{\'{o}}, Pablo and Pi, Nayat S{\'{a}}nchez and Meliou, Alexandra and Sudarshan, S.},title={Responsible Model Selection with Virny and VirnyView},booktitle={Companion of the International Conference on Management of Data,
{SIGMOD/PODS}, Santiago, Chile},pages={488--491},publisher={{ACM}},year={2024},url={https://doi.org/10.1145/3626246.3654738},doi={10.1145/3626246.3654738},keywords={conference,demo,RAIforUkraine,data},author+an={1=self;2=self;3=self}}
On Fairness and Stability: Is Estimator Variance a Friend or a Foe?
Falaah Arif Khan, Denys Herasymuk, and Julia Stoyanovich
@article{DBLP:journals/corr/abs-2302-04525,author={Khan, Falaah Arif and Herasymuk, Denys and Stoyanovich, Julia},title={On Fairness and Stability: Is Estimator Variance a Friend or a Foe?},journal={CoRR},volume={abs/2302.04525},year={2023},doi={10.48550/arXiv.2302.04525},eprinttype={arXiv},eprint={2302.04525},keywords={working,fairness,stability,RAIforUkraine},}
