4 papers · 1 filter
Spectral Dual Fitting for -Means
Aditya Anand, Moses Charikar, Vincent Cohen-Addad +5
We give a new dual fitting algorithm which gives improved approximation ratios of and for -Means in (high-dimensional) Euclidean and genera…
An Improved Greedy Approximation for (Metric) -Means
Moses Charikar, Vincent Cohen-Addad, Ruiquan Gao +3
Clustering is a basic task in data analysis and machine learning, and the optimization of clustering objectives are well-studied optimization problems; amongst these, the -Means…
Correlation Clustering Beyond the Pivot Algorithm
Soheil Behnezhad, Moses Charikar, Vincent Cohen-Addad +2
We study the classic correlation clustering in the dynamic setting. Given objects and a complete labeling of the object-pairs as either similar or dissimilar, the goal is to pa…
A Quasi-Monte Carlo Data Structure for Smooth Kernel Evaluations
Moses Charikar, Michael Kapralov, Erik Waingarten
In the kernel density estimation (KDE) problem one is given a kernel and a dataset of points in a Euclidean space, and must prepare a data structure that can quickly…