Rigoli, F;
Pezzulo, G;
Dolan, R;
Friston, K;
(2017)
A Goal-Directed Bayesian Framework for Categorization.
Frontiers in Psychology
, 8
, Article 408. 10.3389/fpsyg.2017.00408.
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Abstract
Categorization is a fundamental ability for efficient behavioral control. It allows organisms to remember the correct responses to categorical cues and not for every stimulus encountered (hence eluding computational cost or complexity), and to generalize appropriate responses to novel stimuli dependant on category assignment. Assuming the brain performs Bayesian inference, based on a generative model of the external world and future goals, we propose a computational model of categorization in which important properties emerge. These properties comprise the ability to infer latent causes of sensory experience, a hierarchical organization of latent causes, and an explicit inclusion of context and action representations. Crucially, these aspects derive from considering the environmental statistics that are relevant to achieve goals, and from the fundamental Bayesian principle that any generative model should be preferred over alternative models based on an accuracy-complexity trade-off. Our account is a step toward elucidating computational principles of categorization and its role within the Bayesian brain hypothesis.
| Type: | Article |
|---|---|
| Title: | A Goal-Directed Bayesian Framework for Categorization |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3389/fpsyg.2017.00408 |
| Publisher version: | https://doi.org/10.3389/fpsyg.2017.00408 |
| Language: | English |
| Additional information: | Copyright © 2017 Rigoli, Pezzulo, Dolan and Friston. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) (http://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
| Keywords: | Bayesian inference, goal-directed behavior, categorization, model comparison, accuracy complexity |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Imaging Neuroscience |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1551051 |
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