no code implementations • 17 Dec 2024 • Konstantin Avrachenkov, Vivek S. Borkar, Pratik Shah
In particular, we compare the performance of LIP with the performance of the Whittle Index Policy (WIP), both heuristic policies known to be asymptotically optimal under certain natural conditions.
no code implementations • 4 Jun 2024 • Francisco Robledo Relaño, Vivek Borkar, Urtzi Ayesta, Konstantin Avrachenkov
The Whittle index policy is a heuristic that has shown remarkably good performance (with guaranteed asymptotic optimality) when applied to the class of problems known as Restless Multi-Armed Bandit Problems (RMABPs).
no code implementations • 3 Jun 2024 • Francisco Robledo, Urtzi Ayesta, Konstantin Avrachenkov
This paper introduces the Lagrange Policy for Continuous Actions (LPCA), a reinforcement learning algorithm specifically designed for weakly coupled MDP problems with continuous action spaces.
no code implementations • 7 Apr 2023 • Tejas Pagare, Vivek Borkar, Konstantin Avrachenkov
We extend the provably convergent Full Gradient DQN algorithm for discounted reward Markov decision processes from Avrachenkov et al. (2021) to average reward problems.
no code implementations • 27 Jan 2023 • Kalle Alaluusua, Konstantin Avrachenkov, B. R. Vinay Kumar, Lasse Leskelä
We consider the community recovery problem on a multilayer variant of the hypergraph stochastic block model (HSBM).
no code implementations • 23 Sep 2020 • Konstantin Avrachenkov, Andrei Bobu, Maximilien Dreveton
While the standard spectral clustering is often not effective for geometric graphs, we present an effective generalization, which we call higher-order spectral clustering.
no code implementations • 17 Sep 2020 • Konstantin Avrachenkov, Kishor Patil, Gugan Thoppe
We provide three novel schemes for online estimation of page change rates, all of which have extremely low running times per iteration.
no code implementations • 4 Sep 2020 • Yuzhou Chen, Yulia R. Gel, Konstantin Avrachenkov
Due to high utility in many applications, from social networks to blockchain to power grids, deep learning on non-Euclidean objects such as graphs and manifolds, coined Geometric Deep Learning (GDL), continues to gain an ever increasing interest.
1 code implementation • 11 Aug 2020 • Konstantin Avrachenkov, Maximilien Dreveton, Lasse Leskelä
This article studies the estimation of latent community memberships from pairwise interactions in a network of $N$ nodes, where the observed interactions can be of arbitrary type, including binary, categorical, and vector-valued, and not excluding even more general objects such as time series or spatial point patterns.
1 code implementation • 29 Jul 2020 • Konstantin Avrachenkov, Maximilien Dreveton
Graph-based semi-supervised learning methods combine the graph structure and labeled data to classify unlabeled data.
no code implementations • 8 Jul 2020 • Konstantin Avrachenkov, Vivek S. Borkar, Sharayu Moharir, Suhail M. Shah
We introduce a model of graph-constrained dynamic choice with reinforcement modeled by positively $\alpha$-homogeneous rewards.
no code implementations • 5 Apr 2020 • Konstantin Avrachenkov, Kishor Patil, Gugan Thoppe
Specifically, we provide two novel schemes for online estimation of page change rates.
no code implementations • 25 Sep 2019 • Yuzhou Chen, Yulia R. Gel, Konstantin Avrachenkov
Due to high utility in many applications, from social networks to blockchain to power grids, deep learning on non-Euclidean objects such as graphs and manifolds continues to gain an ever increasing interest.
1 code implementation • 7 Oct 2018 • Xutong Liu, Yu-Zhen Janice Chen, John C. S. Lui, Konstantin Avrachenkov
The number of each graphlet, called graphlet count, is a signature which characterizes the local network structure of a given graph.
no code implementations • 10 Nov 2016 • Arun Kadavankandy, Konstantin Avrachenkov, Laura Cottatellucci, Rajesh Sundaresan
In this work, we tackle the problem of hidden community detection.
no code implementations • 19 Oct 2015 • Konstantin Avrachenkov, Bruno Ribeiro, Jithin K. Sreedharan
Online social networks (OSN) contain extensive amount of information about the underlying society that is yet to be explored.
no code implementations • 4 Sep 2015 • Konstantin Avrachenkov, Vivek Borkar, Krishnakant Saboo
It is based onsampling of nodes by performing a random walk on the graph.
no code implementations • 20 Aug 2015 • Konstantin Avrachenkov, Pavel Chebotarev, Alexey Mishenin
We study a semi-supervised learning method based on the similarity graph and RegularizedLaplacian.