activity
20132025
most citedRectangular maximum-volume submatrices and their applications

56 citations · 82 across the 8 of their papers we have counts for

collaborators

9 papers

cs.LG2025

NNTile: a machine learning framework capable of training extremely large GPT language models on a single node

Aleksandr Mikhalev, Aleksandr Katrutsa, Konstantin Sozykin +1

This study presents an NNTile framework for training large deep neural networks in heterogeneous clusters. The NNTile is based on a StarPU library, which implements task-based para…

cs.LG2024★ 1 cited

Quantization of Large Language Models with an Overdetermined Basis

Daniil Merkulov, Daria Cherniuk, Alexander Rudikov +4

In this paper, we introduce an algorithm for data quantization based on the principles of Kashin representation. This approach hinges on decomposing any given vector, matrix, or te…

cs.CL2024★ 1 cited

LoTR: Low Tensor Rank Weight Adaptation

Daniel Bershatsky, Daria Cherniuk, Talgat Daulbaev +2

In this paper we generalize and extend an idea of low-rank adaptation (LoRA) of large language models (LLMs) based on Transformer architecture. Widely used LoRA-like methods of fin…

cs.LG2023

Run LoRA Run: Faster and Lighter LoRA Implementations

Daria Cherniuk, Aleksandr Mikhalev, Ivan Oseledets

LoRA is a technique that reduces the number of trainable parameters in a neural network by introducing low-rank adapters to linear layers. This technique is used both for fine-tuni…

math.NA2022★ 9 cited

Linear scaling computation of forces for the domain-decomposition linear Poisson--Boltzmann method

Abhinav Jha, Michele Nottoli, Aleksandr Mikhalev +2

The Linearized Poisson--Boltzmann (LPB) equation is a popular and widely accepted model for accounting solvent effects in computational (bio-) chemistry. In the present article we…

cs.LG2022

Memory-Efficient Backpropagation through Large Linear Layers

Daniel Bershatsky, Aleksandr Mikhalev, Alexandr Katrutsa +3

In modern neural networks like Transformers, linear layers require significant memory to store activations during backward pass. This study proposes a memory reduction approach to…

physics.chem-ph2020

An approximation strategy to compute accurate initial density matrices for repeated self-consistent field calculations at different geometries

E. Polack, A. Mikhalev, Geneviève Dusson +2

Repeated computations on the same molecular system, but with different geometries, are often performed in quantum chemistry, for instance, in ab-initio molecular dynamics simulatio…

math.NA2015★ 56 cited

Rectangular maximum-volume submatrices and their applications

A. Mikhalev, I. V. Oseledets

We introduce a definition of the volume for a general rectangular matrix, which for square matrices is equivalent to the absolute value of the determinant. We generalize results fo…

math.NA2013★ 15 cited

Iterative representing set selection for nested cross approximation

A. Yu Mikhalev, I. V. Oseledets

A new fast algebraic method for obtaining an -approximation of a matrix from its entries is presented. The main idea behind the method is based on the nested represe…