Self-Organization of Early Vocal Development in Infants and Machines: The Role of Intrinsic Motivation

We bridge the gap between two issues in infant development: vocal development and intrinsic motivation. We propose and experimentally test the hypothesis that general mechanisms of intrinsically motivated spontaneous exploration, also called curiosity-driven learning, can self-organize developmental...

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Main Authors: Clément eMoulin-Frier, Sao Mai eNguyen, Pierre-Yves eOudeyer
Format: Article
Language:English
Published: Frontiers Media S.A. 2014-01-01
Series:Frontiers in Psychology
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.01006/full
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author Clément eMoulin-Frier
Sao Mai eNguyen
Pierre-Yves eOudeyer
author_facet Clément eMoulin-Frier
Sao Mai eNguyen
Pierre-Yves eOudeyer
author_sort Clément eMoulin-Frier
collection DOAJ
description We bridge the gap between two issues in infant development: vocal development and intrinsic motivation. We propose and experimentally test the hypothesis that general mechanisms of intrinsically motivated spontaneous exploration, also called curiosity-driven learning, can self-organize developmental stages during early vocal learning. We introduce a computational model of intrinsically motivated vocal exploration, which allows the learner to autonomously structure its own vocal experiments, and thus its own learning schedule, through a drive to maximize competence progress. This model relies on a physical model of the vocal tract, the auditory system and the agent's motor control as well as vocalizations of social peers. We present computational experiments that show how such a mechanism can explain the adaptive transition from vocal self-exploration with little influence from the speech environment, to a later stage where vocal exploration becomes influenced by vocalizations of peers. Within the initial self-exploration phase, we show that a sequence of vocal production stages self-organizes, and shares properties with data from infant developmental psychology: the vocal learner first discovers how to control phonation, then focuses on vocal variations of unarticulated sounds, and finally automatically discovers and focuses on babbling with articulated proto-syllables. As the vocal learner becomes more proficient at producing complex sounds, imitating vocalizations of peers starts to provide high learning progress explaining an automatic shift from self-exploration to vocal imitation.<br/>
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spelling doaj.art-f00de497cba44d9c9bf13024f3c40f932022-12-22T03:57:21ZengFrontiers Media S.A.Frontiers in Psychology1664-10782014-01-01410.3389/fpsyg.2013.0100661678Self-Organization of Early Vocal Development in Infants and Machines: The Role of Intrinsic MotivationClément eMoulin-Frier0Sao Mai eNguyen1Pierre-Yves eOudeyer2INRIAINRIAINRIAWe bridge the gap between two issues in infant development: vocal development and intrinsic motivation. We propose and experimentally test the hypothesis that general mechanisms of intrinsically motivated spontaneous exploration, also called curiosity-driven learning, can self-organize developmental stages during early vocal learning. We introduce a computational model of intrinsically motivated vocal exploration, which allows the learner to autonomously structure its own vocal experiments, and thus its own learning schedule, through a drive to maximize competence progress. This model relies on a physical model of the vocal tract, the auditory system and the agent's motor control as well as vocalizations of social peers. We present computational experiments that show how such a mechanism can explain the adaptive transition from vocal self-exploration with little influence from the speech environment, to a later stage where vocal exploration becomes influenced by vocalizations of peers. Within the initial self-exploration phase, we show that a sequence of vocal production stages self-organizes, and shares properties with data from infant developmental psychology: the vocal learner first discovers how to control phonation, then focuses on vocal variations of unarticulated sounds, and finally automatically discovers and focuses on babbling with articulated proto-syllables. As the vocal learner becomes more proficient at producing complex sounds, imitating vocalizations of peers starts to provide high learning progress explaining an automatic shift from self-exploration to vocal imitation.<br/>http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.01006/fullImitationself-organizationcuriosity-driven learningintrinsic motivationgoal babblingVocal Development
spellingShingle Clément eMoulin-Frier
Sao Mai eNguyen
Pierre-Yves eOudeyer
Self-Organization of Early Vocal Development in Infants and Machines: The Role of Intrinsic Motivation
Frontiers in Psychology
Imitation
self-organization
curiosity-driven learning
intrinsic motivation
goal babbling
Vocal Development
title Self-Organization of Early Vocal Development in Infants and Machines: The Role of Intrinsic Motivation
title_full Self-Organization of Early Vocal Development in Infants and Machines: The Role of Intrinsic Motivation
title_fullStr Self-Organization of Early Vocal Development in Infants and Machines: The Role of Intrinsic Motivation
title_full_unstemmed Self-Organization of Early Vocal Development in Infants and Machines: The Role of Intrinsic Motivation
title_short Self-Organization of Early Vocal Development in Infants and Machines: The Role of Intrinsic Motivation
title_sort self organization of early vocal development in infants and machines the role of intrinsic motivation
topic Imitation
self-organization
curiosity-driven learning
intrinsic motivation
goal babbling
Vocal Development
url http://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.01006/full
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AT pierreyveseoudeyer selforganizationofearlyvocaldevelopmentininfantsandmachinestheroleofintrinsicmotivation