Abstract
In many cases data analytics has to cope with the extremely high dimension of the input. Structures may be well hidden not only by the sheer amount of data but also by very high-dimensional noise added to relatively low-dimensional signals. The aim of this chapter is to introduce methods which represent high-dimensional data in a low-dimensional space in a way that only a minimum of core information is lost. Optimality will mostly refer to projections in Hilbert spaces. If dimension one, two or three is sufficient to represent the raw data, a computer aided graphical visualization may help to identify clusters or outlying objects.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this chapter
Cite this chapter
Mathar, R., Alirezaei, G., Balda, E., Behboodi, A. (2020). Dimensionality Reduction. In: Fundamentals of Data Analytics . Springer, Cham. https://doi.org/10.1007/978-3-030-56831-3_4
Download citation
DOI: https://doi.org/10.1007/978-3-030-56831-3_4
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-56830-6
Online ISBN: 978-3-030-56831-3
eBook Packages: Mathematics and StatisticsMathematics and Statistics (R0)