no code implementations • 4 Nov 2021 • Konstantin Makarychev, Liren Shan
Our randomized bi-criteria algorithm constructs a threshold decision tree that partitions the data set into $(1+\delta)k$ clusters (where $\delta\in (0, 1)$ is a parameter of the algorithm).
no code implementations • ICML 2020 • Jafar Jafarov, Sanchit Kalhan, Konstantin Makarychev, Yury Makarychev
In the Correlation Clustering problem, we are given a weighted graph $G$ with its edges labeled as "similar" or "dissimilar" by a binary classifier.
no code implementations • 11 Aug 2021 • Jafar Jafarov, Sanchit Kalhan, Konstantin Makarychev, Yury Makarychev
In the Correlation Clustering problem, we are given a complete weighted graph $G$ with its edges labeled as "similar" and "dissimilar" by a noisy binary classifier.
no code implementations • 2 Jul 2021 • Konstantin Makarychev, Liren Shan
This is an improvement over the previous guarantees of $O(k)$ and $O(k^2)$ by Dasgupta et al (2020).
no code implementations • NeurIPS 2020 • Konstantin Makarychev, Aravind Reddy, Liren Shan
In this paper, we study k-means++ and k-means++ parallel, the two most popular algorithms for the classic k-means clustering problem.
no code implementations • NeurIPS 2019 • Sanchit Kalhan, Konstantin Makarychev, Timothy Zhou
Classically, we are tasked with producing a clustering that minimizes the number of disagreements: an edge is in disagreement if it is a similar edge and is present across clusters or if it is a dissimilar edge and is present within a cluster.
no code implementations • 8 Nov 2018 • Konstantin Makarychev, Yury Makarychev, Ilya Razenshteyn
Further, the cost of every clustering is preserved within $(1+\varepsilon)$.
no code implementations • 8 Nov 2018 • Sepideh Mahabadi, Konstantin Makarychev, Yury Makarychev, Ilya Razenshteyn
We introduce and study the notion of an outer bi-Lipschitz extension of a map between Euclidean spaces.
no code implementations • NeurIPS 2017 • Cyrus Rashtchian, Konstantin Makarychev, Miklos Racz, Siena Ang, Djordje Jevdjic, Sergey Yekhanin, Luis Ceze, Karin Strauss
We provide empirical justification of the accuracy, scalability, and convergence of our algorithm on real and synthetic data.
no code implementations • 10 Nov 2015 • Konstantin Makarychev, Yury Makarychev, Aravindan Vijayaraghavan
Many algorithms exist for learning communities in the Stochastic Block Model, but they do not work well in the presence of errors.
no code implementations • 22 Jun 2014 • Konstantin Makarychev, Yury Makarychev, Aravindan Vijayaraghavan
In this paper, we propose and study a semi-random model for the Correlation Clustering problem on arbitrary graphs G. We give two approximation algorithms for Correlation Clustering instances from this model.
no code implementations • 22 Jun 2014 • Konstantin Makarychev, Yury Makarychev, Aravindan Vijayaraghavan
Let $G$ be an arbitrary graph on $V$ with no edges between $L$ and $R$.