Search Results for author: Yury Maximov

Found 25 papers, 8 papers with code

Cascading Blackout Severity Prediction with Statistically-Augmented Graph Neural Networks

no code implementations22 Mar 2024 Joe Gorka, Tim Hsu, Wenting Li, Yury Maximov, Line Roald

Higher variability in grid conditions, resulting from growing renewable penetration and increased incidence of extreme weather events, has increased the difficulty of screening for scenarios that may lead to catastrophic cascading failures.

severity prediction

CMIP X-MOS: Improving Climate Models with Extreme Model Output Statistics

no code implementations24 Oct 2023 Vsevolod Morozov, Artem Galliamov, Aleksandr Lukashevich, Antonina Kurdukova, Yury Maximov

Climate models are essential for assessing the impact of greenhouse gas emissions on our changing climate and the resulting increase in the frequency and severity of natural disasters.

Long-term drought prediction using deep neural networks based on geospatial weather data

no code implementations12 Sep 2023 Vsevolod Grabar, Alexander Marusov, Yury Maximov, Nazar Sotiriadi, Alexander Bulkin, Alexey Zaytsev

The problem of high-quality drought forecasting up to a year in advance is critical for agriculture planning and insurance.

Decision Making

GP CC-OPF: Gaussian Process based optimization tool for Chance-Constrained Optimal Power Flow

no code implementations16 Feb 2023 Mile Mitrovic, Ognjen Kundacina, Aleksandr Lukashevich, Petr Vorobev, Vladimir Terzija, Yury Maximov, Deepjyoti Deka

The developed tool presents a novel data-driven approach based on the GP regression model for solving the CC-OPF problem with a trade-off between complexity and accuracy.

Long-term hail risk assessment with deep neural networks

no code implementations31 Aug 2022 Ivan Lukyanenko, Mikhail Mozikov, Yury Maximov, Ilya Makarov

But there are no machine learning models for data-driven forecasting of changes in hail frequency for a given area.

Time Series Analysis

Ranking-Based Physics-Informed Line Failure Detection in Power Grids

no code implementations31 Aug 2022 Aleksandra Burashnikova, Wenting Li, Massih Amini, Deepjoyti Deka, Yury Maximov

Climate change increases the number of extreme weather events (wind and snowstorms, heavy rains, wildfires) that compromise power system reliability and lead to multiple equipment failures.

Data-Driven Chance Constrained AC-OPF using Hybrid Sparse Gaussian Processes

1 code implementation30 Aug 2022 Mile Mitrovic, Aleksandr Lukashevich, Petr Vorobev, Vladimir Terzija, Yury Maximov, Deepjyoti Deka

The alternating current (AC) chance-constrained optimal power flow (CC-OPF) problem addresses the economic efficiency of electricity generation and delivery under generation uncertainty.

Gaussian Processes

Data-Driven Stochastic AC-OPF using Gaussian Processes

1 code implementation21 Jul 2022 Mile Mitrovic, Aleksandr Lukashevich, Petr Vorobev, Vladimir Terzija, Semen Budenny, Yury Maximov, Deepjoyti Deka

Unfortunately, the most accessible renewable power sources, such as wind and solar, are highly fluctuating and thus bring a lot of uncertainty to power grid operations and challenge existing optimization and control policies.

Gaussian Processes

Learning over No-Preferred and Preferred Sequence of Items for Robust Recommendation (Extended Abstract)

1 code implementation26 Feb 2022 Aleksandra Burashnikova, Yury Maximov, Marianne Clausel, Charlotte Laclau, Franck Iutzeler, Massih-Reza Amini

This paper is an extended version of [Burashnikova et al., 2021, arXiv: 2012. 06910], where we proposed a theoretically supported sequential strategy for training a large-scale Recommender System (RS) over implicit feedback, mainly in the form of clicks.

Recommendation Systems

Self-Training: A Survey

no code implementations24 Feb 2022 Massih-Reza Amini, Vasilii Feofanov, Loic Pauletto, Lies Hadjadj, Emilie Devijver, Yury Maximov

Semi-supervised algorithms aim to learn prediction functions from a small set of labeled observations and a large set of unlabeled observations.

Image Classification Multi-class Classification +1

Recommender systems: when memory matters

no code implementations4 Dec 2021 Aleksandra Burashnikova, Marianne Clausel, Massih-Reza Amini, Yury Maximov, Nicolas Dante

In this paper, we study the effect of long memory in the learnability of a sequential recommender system including users' implicit feedback.

Recommendation Systems

Learning over no-Preferred and Preferred Sequence of items for Robust Recommendation

1 code implementation12 Dec 2020 Aleksandra Burashnikova, Marianne Clausel, Charlotte Laclau, Frack Iutzeller, Yury Maximov, Massih-Reza Amini

In this paper, we propose a theoretically founded sequential strategy for training large-scale Recommender Systems (RS) over implicit feedback, mainly in the form of clicks.

Recommendation Systems

Tractable Minor-free Generalization of Planar Zero-field Ising Models

no code implementations22 Oct 2019 Valerii Likhosherstov, Yury Maximov, Michael Chertkov

We present a new family of zero-field Ising models over $N$ binary variables/spins obtained by consecutive "gluing" of planar and $O(1)$-sized components and subsets of at most three vertices into a tree.

A New Family of Tractable Ising Models

no code implementations14 Jun 2019 Valerii Likhosherstov, Yury Maximov, Michael Chertkov

To illustrate the utility of the new family of tractable graphical models, we first build an $O(N^{3/2})$ algorithm for inference and sampling of the K5-minor-free zero-field Ising models - an extension of the planar zero-field Ising models - which is neither genus- nor treewidth-bounded.

Data Structures and Algorithms Statistical Mechanics Data Analysis, Statistics and Probability Computation

Sequential Learning over Implicit Feedback for Robust Large-Scale Recommender Systems

no code implementations21 Feb 2019 Alexandra Burashnikova, Yury Maximov, Massih-Reza Amini

This is to prevent from an abnormal number of clicks over some targeted items, mainly due to bots; or very few user interactions.

Recommendation Systems

Learning a Generator Model from Terminal Bus Data

no code implementations3 Jan 2019 Nikolay Stulov, Dejan J Sobajic, Yury Maximov, Deepjyoti Deka, Michael Chertkov

In this work we investigate approaches to reconstruct generator models from measurements available at the generator terminal bus using machine learning (ML) techniques.

BIG-bench Machine Learning

Inference and Sampling of $K_{33}$-free Ising Models

2 code implementations22 Dec 2018 Valerii Likhosherstov, Yury Maximov, Michael Chertkov

We call an Ising model tractable when it is possible to compute its partition function value (statistical inference) in polynomial time.

Gauges, Loops, and Polynomials for Partition Functions of Graphical Models

no code implementations12 Nov 2018 Michael Chertkov, Vladimir Chernyak, Yury Maximov

We show that the Gauge Function has a natural polynomial representation in terms of gauges/variables associated with edges of the multi-graph.

Belief Propagation Min-Sum Algorithm for Generalized Min-Cost Network Flow

no code implementations20 Oct 2017 Andrii Riazanov, Yury Maximov, Michael Chertkov

Belief Propagation algorithms are instruments used broadly to solve graphical model optimization and statistical inference problems.

Model Optimization

Efficient Rank Minimization to Tighten Semidefinite Programming for Unconstrained Binary Quadratic Optimization

1 code implementation5 Aug 2017 Roman Pogodin, Mikhail Krechetov, Yury Maximov

We propose a method for low-rank semidefinite programming in application to the semidefinite relaxation of unconstrained binary quadratic problems.

Optimization and Control

Representation Learning and Pairwise Ranking for Implicit Feedback in Recommendation Systems

1 code implementation29 Apr 2017 Sumit Sidana, Mikhail Trofimov, Oleg Horodnitskii, Charlotte Laclau, Yury Maximov, Massih-Reza Amini

The learning objective is based on three scenarios of ranking losses that control the ability of the model to maintain the ordering over the items induced from the users' preferences, as well as, the capacity of the dot-product defined in the learned embedded space to produce the ordering.

Collaborative Filtering Recommendation Systems +1

Rademacher Complexity Bounds for a Penalized Multiclass Semi-Supervised Algorithm

no code implementations2 Jul 2016 Yury Maximov, Massih-Reza Amini, Zaid Harchaoui

We propose Rademacher complexity bounds for multiclass classifiers trained with a two-step semi-supervised model.

Clustering

Cannot find the paper you are looking for? You can Submit a new open access paper.