Unsupervised Learning of Overlapping Image Components Using Divisive Input Modulation

Table 1

Summary of the algorithms tested in this article.

Acronym	Description	Definition
1/8	Fyfe's algorithm for negative feedback	Equations (1), (2), and (3)
𝚗𝚖𝚏𝚍𝚒𝚟	Harpur's algorithm for negative feedback	Equations (4), (5), and (6)
𝑠	Nonnegative matrix factorisation with divergence objective	Equations (8) and (9)
𝑠	Sequential nonnegative matrix factorisation	Equations (13), (14), and (18)
[𝑝1,𝑝2]	Divisive input modulation	Equations (19), (20), and (22)