We argue that developmental robotics, in its integration of developmental psychology and robotics, has the potential to encounter unexpected and unexamined conceptual difficulties. In particular, the various uses of e...
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We argue that developmental robotics, in its integration of developmental psychology and robotics, has the potential to encounter unexpected and unexamined conceptual difficulties. In particular, the various uses of embodiment and shared intentionality single out certain robots and behaviors as more or less relevant for the modeling of social cognition. As these terms have relatively orthogonal histories, there is no account for how their use will interact to shape methodology. We provide a brief discussion of how they may do so. Moreover, theorists often avoid explicit endorsement of some use or another. Although this agnosticism is understandable, we use the model of Dominey and Warneken (2011) as an illustrative example of why it is potentially dangerous. While Dominey and Warneken have succeeded in encouraging theorists to adopt clearer formulations of shared intentionality, their model suffers from important difficulties in interpretation, which, we argue, are a consequence of their uses of embodiment and shared intentionality respectively. (C) 2013 Elsevier Ltd. All rights reserved.
Learning complex mappings between various modalities (typically articulatory, somatosensory and auditory) is a central issue in computationally modeling speech acquisition. These mappings are generally nonlinear and r...
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ISBN:
(纸本)9781629934433
Learning complex mappings between various modalities (typically articulatory, somatosensory and auditory) is a central issue in computationally modeling speech acquisition. These mappings are generally nonlinear and redundant, involving high dimensional sensorimotor spaces. Classical approaches consider two separate phases: a relatively pre-determined exploration phase analogous to infant babbling followed by an exploitation phase involving higher level communicative motivations. In this paper, we consider the problem as a developmental robotics one, in which an agent actively learns sensorimotor mappings of an articulatory vocal model. More specifically, we show how intrinsic motivations can allow the emergence of efficient exploration strategies, driving the way a learning agent will interact with its environment to collect an adequate learning set.
Most theories of learning would predict a gradual acquisition and refinement of skills as learning progresses, and while some highlight exponential growth, this fails to explain why natural cognitive development typic...
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Most theories of learning would predict a gradual acquisition and refinement of skills as learning progresses, and while some highlight exponential growth, this fails to explain why natural cognitive development typically progresses in stages. Models that do span multiple developmental stages typically have parameters to "switch" between stages. We argue that by taking an embodied view, the interaction between learning mechanisms, the resulting behavior of the agent, and the opportunities for learning that the environment provides can account for the stage-wise development of cognitive abilities. We summarize work relevant to this hypothesis and suggest two simple mechanisms that account for some developmental transitions: neural readiness focuses on changes in the neural substrate resulting from ongoing learning, and perceptual readiness focuses on the perceptual requirements for learning new tasks. Previous work has demonstrated these mechanisms in replications of a wide variety of infant language experiments, spanning multiple developmental stages. Here we piece this work together as a single model of ongoing learning with no parameter changes at all. The model, an instance of the Epigenetic robotics Architecture (Morse et al 2010) embodied on the iCub humanoid robot, exhibits ongoing multi-stage development while learning pre-linguistic and then basic language skills.
The modeling of utility is an important problem in many fields, including reinforcement learning. However, when considering a developmental approach to open-ended learning a new aspect arises. In these settings, the e...
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ISBN:
(纸本)9781728119854
The modeling of utility is an important problem in many fields, including reinforcement learning. However, when considering a developmental approach to open-ended learning a new aspect arises. In these settings, the efficiency of the modeling process becomes a key aspect, as these processes usually take place in real time and, to increase survivability, it is necessary for the robot to be able to produce utility models as fast as possible. In this paper, we address this issue by proposing a modulation-based approach to the adaptation of the robot's experience, in the form of previously obtained ANN based utility models, to new situations. These previous utility models are perceptually recalled from a Long-Term Memory and combined to produce an initial guess to the new utility model. After this, modulatory structures are created that lead to the fine adaptation of these initial guesses to the real utility model of the new situation. Some initial results of experiments using a real robot are presented to clarify the approach. Specifically, three realistic problems that a Baxter "cooking robot" must solve are faced with this modulating approach. With them, it is clearly shown the increase in efficiency of the utility model learning in real time.
Learning how to control arm joints for goal-directed reaching tasks is one of the earliest skills that need to be acquired by developmental robotics in order to scaffold into tasks of higher Intelligence. Motor Babbli...
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ISBN:
(纸本)9783642386787
Learning how to control arm joints for goal-directed reaching tasks is one of the earliest skills that need to be acquired by developmental robotics in order to scaffold into tasks of higher Intelligence. Motor Babbling seems as a promising approach toward the generation of internal models and control policies for robotic arms. In this paper we propose a mechanism for learning sensory-motor associations using layered arrangement of Self-Organizing Neural Network (SOINN) and joint-egocentric representations. The robot starts off by random exploratory motion, then it gradually shift into more coordinated, goal-directed actions based on the measure of error-change. The main contribution of this research is in the proposition of a novel architecture for online sensory-motor learning using SOINN networks without the need to provide the system with a kinematic model or a preprogrammed joint control scheme. The viability of the proposed mechanism is demonstrated using a simulated planar robotic arm.
The article discusses various reports published within the issue including a study on developmental psychology and robotics and a paper on object perception and motor development.
The article discusses various reports published within the issue including a study on developmental psychology and robotics and a paper on object perception and motor development.
In robotics, methods and softwares usually require optimizations of hyperparameters in order to be efficient for specific tasks, for instance industrial bin-picking from homogeneous heaps of different objects. We pres...
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ISBN:
(纸本)9781728173061
In robotics, methods and softwares usually require optimizations of hyperparameters in order to be efficient for specific tasks, for instance industrial bin-picking from homogeneous heaps of different objects. We present a developmental framework based on long-term memory and reasoning modules (Bayesian Optimisation, visual similarity and parameters bounds reduction) allowing a robot to use meta-learning mechanism increasing the efficiency of such continuous and constrained parameters optimizations. The new optimization, viewed as a learning for the robot, can take advantage of past experiences (stored in the episodic and procedural memories) to shrink the search space by using reduced parameters bounds computed from the best optimizations realized by the robot with similar tasks of the new one (e.g. bin-picking from an homogenous heap of a similar object, based on visual similarity of objects stored in the semantic memory). As example, we have confronted the system to the constrained optimizations of 9 continuous hyper-parameters for a professional software (Kamido) in industrial robotic arm bin-picking tasks, a step that is needed each time to handle correctly new object. We used a simulator to create bin-picking tasks for 8 different objects (7 in simulation and one with real setup, without and with meta-learning with experiences coming from other similar objects) achieving goods results despite a very small optimization budget, with a better performance reached when meta-learning is used (84.3% vs 78.9% of success overall, with a small budget of 30 iterations for each optimization) for every object tested (p-value=0.036).
Aldebaran robotics is launching a developmental robotics activity as part of the new A-Lab research entity. The focus will be fundamental research and the scope of interest will range from low level categorization of ...
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ISBN:
(纸本)9781450320191
Aldebaran robotics is launching a developmental robotics activity as part of the new A-Lab research entity. The focus will be fundamental research and the scope of interest will range from low level categorization of sensorimotor information, up to high level lexical and grammatical language acquisition. I will shortly introduce the A-Lab and in particular the AI group with a rapid outlook on the research agenda and approach, stressing the potential for collaboration and the long term applicative view of the company.
This paper introduces a new approach to learning pointing behaviour in a developmental robot by using a type of constructive neural network and Q-learning algorithm,taking inspirations from human infant *** pointing b...
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This paper introduces a new approach to learning pointing behaviour in a developmental robot by using a type of constructive neural network and Q-learning algorithm,taking inspirations from human infant *** pointing behaviour is considered as the first movement that human infants use to communicate with other person during human development,it is also the foundation of the human social interaction *** rebuilt this developmental course in our robot simulation *** learning algorithm of the pointing is implemented by Q-Learning,and a radial based function neural network with resource allocating algorithm is applied to hold the learning result and to control robot *** experimental results show that the approach is able to lead our development robot to generate pointing behaviour.
developmental robotics models provide useful tools to study and understand the language learning process in infants and robots. These models allow us to describe key mechanisms of language development, such as statist...
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ISBN:
(数字)9781665413114
ISBN:
(纸本)9781665413114
developmental robotics models provide useful tools to study and understand the language learning process in infants and robots. These models allow us to describe key mechanisms of language development, such as statistical learning, the role of embodiment, and the impact of the attention payed to an object while learning its name. Robots can be particularly well suited for this type of problems, because they cover both a physical manipulation of the environment and mathematical modeling of the temporal changes of the learned concepts. In this work we present a computational representation of the impact of embodiment and attention on word learning, relying on sensory data collected with a real robotic agent in a real world scenario. Results show that the cognitive architecture designed for this scenario is able to capture the changes underlying the moving object in the field of view of the robot. The architecture successfully handles the temporal relationship in moving items and manages to show the effects of the embodied attention on word-object mapping.
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