Search Results for author: Alexander Hvatov

Found 11 papers, 5 papers with code

Towards stable real-world equation discovery with assessing differentiating quality influence

no code implementations9 Nov 2023 Mikhail Masliaev, Ilya Markov, Alexander Hvatov

This paper explores the critical role of differentiation approaches for data-driven differential equation discovery.

Towards true discovery of the differential equations

1 code implementation9 Aug 2023 Alexander Hvatov, Roman Titov

Differential equation discovery, a machine learning subfield, is used to develop interpretable models, particularly in nature-related applications.

Directed differential equation discovery using modified mutation and cross-over operators

1 code implementation9 Aug 2023 Elizaveta Ivanchik, Alexander Hvatov

The discovery of equations with knowledge of the process origin is a tempting prospect.

Comparison of Single- and Multi- Objective Optimization Quality for Evolutionary Equation Discovery

1 code implementation29 Jun 2023 Mikhail Maslyaev, Alexander Hvatov

Evolutionary differential equation discovery proved to be a tool to obtain equations with less a priori assumptions than conventional approaches, such as sparse symbolic regression over the complete possible terms library.

Symbolic Regression

On the balance between the training time and interpretability of neural ODE for time series modelling

no code implementations7 Jun 2022 Yakov Golovanev, Alexander Hvatov

The only interpretation that could be extracted is the eigenspace of the operator, which is an ill-posed problem for a large system.

Time Series Time Series Analysis

Automated differential equation solver based on the parametric approximation optimization

1 code implementation11 May 2022 Alexander Hvatov, Tatiana Tikhonova

Only a few "cheap and dirty" numerical methods converge on a wide class of equations without parameter tuning with the lower approximation order price.

Multi-objective discovery of PDE systems using evolutionary approach

no code implementations11 Mar 2021 Mikhail Maslyaev, Alexander Hvatov

However, this approach restricts the application to the real cases, where, for example, the form of the external forcing is of interest.

Hybrid and Automated Machine Learning Approaches for Oil Fields Development: the Case Study of Volve Field, North Sea

1 code implementation3 Mar 2021 Nikolay O. Nikitin, Ilia Revin, Alexander Hvatov, Pavel Vychuzhanin, Anna V. Kalyuzhnaya

We focused on the problem of wells location optimization and two tasks within it: improving the quality of oil production estimation and estimation of reservoir characteristics for appropriate wells allocation and parametrization, using machine learning methods.

BIG-bench Machine Learning Decision Making

The data-driven physical-based equations discovery using evolutionary approach

no code implementations3 Apr 2020 Alexander Hvatov, Mikhail Maslyaev

The selected terms pass to the evolutionary algorithm, which is used to evolve the selection.

regression

Data-driven PDE discovery with evolutionary approach

no code implementations19 Mar 2019 Michail Maslyaev, Alexander Hvatov, Anna Kalyuzhnaya

The data-driven models allow one to define the model structure in cases when a priori information is not sufficient to build other types of models.

regression Symbolic Regression

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