A computational implementation of a Hebbian learning network and its application to configural forms of acquired equivalence
Robinson, Jasper; George, David N.; Heinke, Dietmar
Dr David George D.George@hull.ac.uk
We describe and report the results of computer simulations of the three-layer Hebbian network informally described by Honey, Close, and Lin (2010): A general account of discrimination that has been shaped by data from configural acquired equivalence experiments that are beyond the scope of alternative models. Simulations implemented a conditional principle components analysis (CPCA) Hebbian learning algorithm and were of four published experimental demonstrations of configural acquired equivalence. Experiments involved training rats on appetitive bi-conditional discriminations in which discrete cues, (w and x) signaled food delivery (+) or its absence (-) in four different contexts (A, B, C and D): Aw+ Bw- Cw+ Dw- Ax- Bx+ Cx- Dx+. Contexts A and C acquired equivalence. In three of the experiments acquired equivalence was evident from subsequent revaluation, from compound testing or from whole-/part-reversal training. The fourth experiment added concurrent bi-conditional discriminations with the same contexts but a pair of additional discrete cues (y and z). The congruent form of the discrimination, in which A and C provided the same information about y and z, was solved relatively readily. Parametric variation allowed the network to successfully simulate the results of each of the four experiments.
Robinson, J., George, D. N., & Heinke, D. (2019). A computational implementation of a Hebbian learning network and its application to configural forms of acquired equivalence. Journal of Experimental Psychology: Animal Learning and Cognition, 45(3), 356-371. https://doi.org/10.1037/xan0000203
|Journal Article Type||Note|
|Acceptance Date||Feb 15, 2019|
|Publication Date||Jul 1, 2019|
|Deposit Date||Mar 28, 2019|
|Publicly Available Date||Mar 28, 2019|
|Journal||Journal of Experimental Psychology: Animal Learning and Cognition|
|Publisher||American Psychological Association|
|Peer Reviewed||Peer Reviewed|
|Keywords||Acquired equivalence; Configural; Discrimination; Hebbian; Learning|
©American Psychological Association, 2019. This paper is not the copy of record and may not exactly replicate the authoritative document published in the APA journal. Please do not copy or cite without author's permission.
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