Constructing measures of sparsity

Giancarlo Pastor Figueroa, Inmaculada Mora-Jiménez, Riku Jäntti, Antonio J. Caamaño

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
177 Downloads (Pure)

Abstract

This paper presents a rigorous but tractable study of sparsity. We postulate a definition of sparsity that is as broad as possible, so that it generates all the various measures that are useful in practice, but narrow enough that the fundamental properties of generalized sparsity still hold. As we work through the various ways of demonstrating the advantageous properties of sparsity, we illustrate its meaning from geometrical and operational perspectives. Thereafter, we construct specific measures of sparsity which are successfully qualified in complexity analysis and sparse optimization scenarios. Overall, our main objective is to construct measures of sparsity that will facilitate and enhance the design of the next innovative sensing technologies.
Original languageEnglish
Pages (from-to)3643 - 3654
Number of pages12
JournalIEEE Transactions on Knowledge and Data Engineering
Volume34
Issue number8
Early online date2020
DOIs
Publication statusPublished - 1 Aug 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • axioms
  • complexity
  • concentration
  • diversity
  • effective
  • entropy
  • fairness
  • generalized convexity
  • inequality
  • information
  • sparsity
  • uncertainty

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