2. What is Sparsity?

By Masaaki Nagahara, The University of Kitakyushu, Japan, nagahara@kitakyu-u.ac.jp

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Published: 24 Sep 2020

© 2020 Masaaki Nagahara

Abstract

In this chapter, we explain the notion of sparsity, and introduce sparse representation of vectors and functions. The notion introduced in this chapter is important throughout this book, and hence do not omit this chapter.