MIMR-DGSA: unsupervised hyperspectral band selection based on information theory and a modified discrete gravitational search algorithm

Julius Tschannerl, Jinchang Ren, Peter Yuen, Genyun Sun, Huimin Zhao, Zhijing Yang, Zheng Wang, Stephen Marshall

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Band selection plays an important role in hyperspectral data analysis as it can improve the performance of data analysis without losing information about the constitution of the underlying data. We propose a MIMR-DGSA algorithm for band selection by following the Maximum-Information-Minimum-Redundancy (MIMR) criterion that maximises the information carried by individual features of a subset and minimises redundant information between them. Subsets are generated with a modified Discrete Gravitational Search Algorithm (DGSA) where we definine a neighbourhood concept for feature subsets. A fast algorithm for pairwise mutual information calculation that incorporates variable bandwidths of hyperspectral bands called VarBWFastMI is also developed. Classification results on three hyperspectral remote sensing datasets show that the proposed MIMR-DGSA performs similar to the original MIMR with Clonal Selection Algorithm (CSA) but is computationally more efficient and easier to handle as it has fewer parameters for tuning.
Original languageEnglish
Pages (from-to)189-200
Number of pages12
JournalInformation Fusion
Volume51
Early online date15 Feb 2019
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • band selection
  • discrete optimisation
  • entropy
  • evolutionary computation
  • feature selection
  • gravitational search algorithm
  • hyperspectral imaging
  • maximum-information-minimum-redundancy
  • mutual information.

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  • Research Output

    • 19 Citations
    • 1 Article

    A dynamic neighborhood learning-based gravitational search algorithm

    Zhang, A., Sun, G., Ren, J., Li, X., Wang, Z. & Jia, X., 30 Jan 2018, In : IEEE Transactions on Cybernetics. 48, 1, p. 436-447 12 p.

    Research output: Contribution to journalArticle

    Open Access
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  • 40 Citations (Scopus)
    108 Downloads (Pure)

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    Zhijing Yang

    Jinchang Ren (Host)

    May 2017Jul 2018

    Activity: Hosting a visitor typesHosting an academic visitor

    Genyun Sun

    Jinchang Ren (Host)

    Dec 2016Dec 2017

    Activity: Hosting a visitor typesHosting an academic visitor

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