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Paper · 2203.04370 · 2022

New Coresets for Projective Clustering and Applications

arXiv · PDF · Open in the Atlas

Code that ran

We lifted 7 functions out of this paper's own repositories and ran 5 of them in a sandbox. "Ran" means the function executed on a synthesized input and returned a value. It is not a reproduction of the paper's results.

RepositoryRoleRan
muradtuk/projectiveclusteringcoresets canonical 5 of 7
FunctionStatusWhere it lives
Caratheodory Ran muradtuk/projectiveclusteringcoresets/helper_functions.py
code served (permissive licence) · get_code("e8784985ae3af9e7")
Fast_Caratheodory Ran muradtuk/projectiveclusteringcoresets/helper_functions.py
code served (permissive licence) · get_code("012c7aeb7fed5a55")
determineUpperBound Ran muradtuk/projectiveclusteringcoresets/Utils.py
code served (permissive licence) · get_code("dab47e37b68503e7")
getIdxsOfEllements Ran muradtuk/projectiveclusteringcoresets/Utils.py
code served (permissive licence) · get_code("c4352b587af8f394")
isPD Ran muradtuk/projectiveclusteringcoresets/ProjectiveClusteringCoreset.py
code served (permissive licence) · get_code("b34bc45e5b7b9ea1")
computeInitialWeightVector Not yet run muradtuk/projectiveclusteringcoresets/ProjectiveClusteringCoreset.py
code served (permissive licence) · get_code("1e65f9a565b504a6")
train_model Not yet run muradtuk/projectiveclusteringcoresets/helper_functions.py
code served (permissive licence) · get_code("3f99d68cc2c85872")

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Abstract

$(j,k)$-projective clustering is the natural generalization of the family of $k$-clustering and $j$-subspace clustering problems. Given a set of points $P$ in $\mathbb{R}^d$, the goal is to find $k$ flats of dimension $j$, i.e., affine subspaces, that best fit $P$ under a given distance measure. In this paper, we propose the first algorithm that returns an $L_\infty$ coreset of size polynomial in $d$. Moreover, we give the first strong coreset construction for general $M$-estimator regression. Specifically, we show that our construction provides efficient coreset constructions for Cauchy, Welsch, Huber, Geman-McClure, Tukey, $L_1-L_2$, and Fair regression, as well as general concave and power-bounded loss functions. Finally, we provide experimental results based on real-world datasets, showing the efficacy of our approach.

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