Repository: Freie Universit├Ąt Berlin, Math Department

Minimum-overlap clusterings and the sparsity of overcomplete decompositions of binary matrices

Mireles, Victor and Conrad, T. O. F. (2015) Minimum-overlap clusterings and the sparsity of overcomplete decompositions of binary matrices. Procedia Computer Science, 51 . pp. 2967-2971. ISSN 1877-0509

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

Given a set of n binary data points, a widely used technique is to group its features into k clusters. In the case where n < k, the question of how overlapping are the clusters becomes of interest. In this paper we approach the question through matrix decomposition, and relate the degree of overlap with the sparsity of one of the resulting matrices. We present analytical results regarding bounds on this sparsity, and a heuristic to estimate the minimum amount of overlap that an exact grouping of features into k clusters must have. As shown below, adding new data will not alter this minimum amount of overlap.

Item Type:Article
Subjects:Mathematical and Computer Sciences > Mathematics > Numerical Analysis
Divisions:Department of Mathematics and Computer Science > Institute of Mathematics > Comp. Proteomics Group
Department of Mathematics and Computer Science > Institute of Mathematics
Department of Mathematics and Computer Science > Institute of Mathematics > BioComputing Group
ID Code:1529
Deposited By: Admin Administrator
Deposited On:02 Apr 2015 10:35
Last Modified:08 Jan 2016 12:26

Repository Staff Only: item control page