Slavomír Hanzely

Slavomír Hanzely

PhD student, Optimization in Machine Learning

King Abdullah University of Science and Technology

About me

Currently, I am a Ph.D. student enrolled in the program Applied Mathematics and Computational Science at KAUST. I work under the supervision of Peter Richtárik.

I am from the Slovak Republic; I lived there until I received a bachelor’s degree in Informatics on FMPH UK. With a background in Mathematics and Computer Science, I wanted to contribute to research as soon as possible. Hence I enrolled in an MSc./Ph.D. program at KAUST.

In my spare time, I like to play collective sports. My favorite is ultimate frisbee due to the fair play spirit of the game. Back in Slovakia, I represented the Slovak national team.

Download my resumé.

Interests
  • Machine Learning
  • Stochastic Algorithms
  • Federated Learning
Education

  • PhD in Applied Mathematics and Computational Science, 2020-present

    King Abdullah University of Science and Technology

  • MSc/PhD in Applied Mathematics and Computational Science, 2020

    King Abdullah University of Science and Technology

  • BSc in Informatics, 2019

    Comenius University, Faculty of Mathematics, Physics and Informatics

Recent Publications

ZeroSARAH: Efficient Nonconvex Finite-Sum Optimization with Zero Full Gradient Computation
We propose ZeroSARAH – a novel variant of the variance-reduced method SARAH (Nguyen et al., 2017) – for minimizing the …
Zhize Li, Slavomír Hanzely, Peter Richtárik
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Lower Bounds and Optimal Algorithms for Personalized Federated Learning
In this work, we consider the optimization formulation of personalized federated learning recently introduced by Hanzely and Richtárik …
Filip Hanzely, Slavomír Hanzely, Samuel Horváth, Peter Richtárik
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Adaptive Learning of the Optimal Mini-Batch Size of SGD
Recent advances in the theoretical understandingof SGD (Gower et al., 2019) led to a formula for the optimal mini-batch size minimizing …
Motasem Alfarra, Slavomír Hanzely, Alyazeed Albasyoni, Bernard Ghanem, Peter Richtárik
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Accomplish­ments

Vojtěch Jarník International Mathematical Competition
Apr 2017
8-10th place in category 1 (first place within Czech and Slovak contestants)
International Mathematical Olympiad
Jul 2016 – Jul 2016
Participation on International Mathematical Olympiad (IMO)
Middle European Mathematical Olympiad
Aug 2015 – Aug 2015
18-20th place (bronze medal) on Middle European Mathematical Olympiad (MEMO)

Experience

 
 
 
 
 
Nozdormu (Crypto-trading company)
Research Intern
Nozdormu (Crypto-trading company)
May 2020 – Aug 2020 Bratislava
Main goal was to analyze, model and design practical algorithms to optimize resource allocation of the company and implement the developed methods under various constraints.
 
 
 
 
 
Iuventa (Slovak Youth Institute)
Organizer to the events related to the Mathematical Olympiad
Iuventa (Slovak Youth Institute)
Oct 2017 – Jun 2019 Slovakia

Responsibilities included:

  • Marking problems at the national round of Mathematical Olympiad (3 times)
  • Organizing a day at the national selection camp for International Mathematical Olympiad — creating problem set and marking the solutions (3 times)
  • preparing new format of selection camp for International Mathematical Olympiad and creating problem sets for the whole camp (team of 4 people)
 
 
 
 
 
Trojsten
Volunteer
Trojsten
Aug 2016 – Aug 2019 Slovakia

Responsibilities included:

  • Marking solutions of the competitions for talented high school students KMS, KSP and iKS (approximately 600 solutions, 150 hours of work)
  • Organizing camps for talented high school students in Mathematics and Computer Science - up to this day, I have organized 11 camps (4 of them as the main organizer)
  • Delivering 36 lectures (including a half-day lecture on the camp iKS)

Skills

Programming

Python
Java
C/C++

Hobbies

Sports

Ultimate frisbee

I was representing Slovak national youth team on two European tournaments

Ice-hockey
Floorball