An overview of properties and extensions of FOBI

K. Nordhausen*, J. Virta

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)
116 Downloads (Pure)


Recently, Spurek, Tabor, Struksi and Smieja (2018) suggested an independent component analysis method that is obtained via a generalized eigenvalue decomposition and stated that their estimator enjoys several useful properties. The estimator is however already known since 1989 as FOBI (Fourth order blind identification), and it indeed has many nice properties, even outside the independent component model. As there seems to be interest in the readers of Knowledge-Based Systems in the estimator, we shortly review it and various of its properties not mentioned by Spurek et al. (2018), along with some recent extensions of FOBI.

Original languageEnglish
Pages (from-to)113-116
Number of pages4
Publication statusPublished - 1 Jun 2019
MoE publication typeA1 Journal article-refereed


  • Independence property
  • Independent component analysis
  • Invariant coordinate selection


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