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2013 IEEE Third Joint International Conference on Development and Learning and Epigenetic Robotics (ICDL)最新文献

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Epigenetic adaptation through hormone modulation in autonomous robots 自主机器人中激素调节的表观遗传适应
J. Lones, L. Cañamero
Epigenetic adaptation provides biological organisms with the ability to adjust their physiology and/or morphology in order to meet some of the challenges posed by their environment. Recent research has suggested that this process may be controlled by hormones. In this paper, we present a model that allows an autonomous robot to develop its systems in accordance with the environment it is currently situated in. Experiments have been undertaken in multiple environments with different challenges and niches to negotiate. We have so far seen encouraging results and the emergence of unique behaviours tailored to exploiting its current environment.
表观遗传适应为生物有机体提供了调节其生理和/或形态的能力,以满足其环境带来的一些挑战。最近的研究表明,这个过程可能是由激素控制的。在本文中,我们提出了一个模型,该模型允许自主机器人根据其当前所处的环境开发其系统。实验已经在多种环境中进行,有不同的挑战和利基需要谈判。到目前为止,我们已经看到了令人鼓舞的结果,并出现了专门针对其当前环境的独特行为。
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引用次数: 8
Understanding embodied visual attention in child-parent interaction 理解亲子互动中的具身视觉注意
S. Bambach, David J. Crandall, Chen Yu
A key component of the human visual system is our attentional control - the selection of which visual stimuli to pay attention to at any moment in time. Understanding visual attention in children could yield new insight into how the visual system develops during formative years and how their visual attention and selection play a role in development and learning. We use head-mounted cameras to record first-person video from interacting children and parents, giving a good approximation of the contents of their visual fields of view, and collect gaze direction data to record where they look within the visual field. We data-mine this data to study the distributions of gaze patterns within the first-person visual frame for both children and adults. We also study the ability of visual saliency to predict visual attention, as a function of the tasks, actions, and interactions that the participants perform. We find significant differences in the results between children and parents, indicating substantial differences in how their bodily actions are coupled with their visual attention between developing (child) and developed (adult) visual systems.
人类视觉系统的一个关键组成部分是我们的注意力控制——在任何时刻选择要注意的视觉刺激。理解儿童的视觉注意可以让我们对视觉系统在成长期是如何发展的,以及他们的视觉注意和选择如何在发展和学习中发挥作用有新的认识。我们使用头戴式摄像机来记录孩子和父母互动的第一人称视频,提供一个很好的近似他们视野的内容,并收集凝视方向数据来记录他们在视野中的位置。我们对这些数据进行数据挖掘,以研究儿童和成人在第一人称视觉框架内凝视模式的分布。我们还研究了视觉显著性预测视觉注意力的能力,作为参与者执行的任务、动作和互动的功能。我们发现孩子和父母之间的结果存在显著差异,这表明在发育中的(儿童)和发育中的(成人)视觉系统之间,他们的身体动作与视觉注意力的结合方式存在巨大差异。
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引用次数: 23
Transfer learning for direct policy search: A reward shaping approach 直接政策搜索的迁移学习:奖励形成方法
S. Doncieux
In the perspective of life long learning, a robot may face different, but related situations. Being able to exploit the knowledge acquired during a first learning phase may be critical in order to solve more complex tasks. This is the transfer learning problem. This problem is addressed here in the case of direct policy search algorithms. No discrete states, nor actions are defined a priori. A policy is described by a controller that computes orders to be sent to the motors out of sensor values. Both motor and sensor values can be continuous. The proposed approach relies on population based direct policy search algorithms, i.e. evolutionary algorithms. It exploits the numerous behaviors that are generated during the search. When learning on the source task, a knowledge base is built. The knowledge base aims at identifying the most salient behaviors segments with regards to the considered task. Afterwards, the knowledge base is exploited on a target task, with a reward shaping approach: besides its reward on the task, a policy is credited with a reward computed from the knowledge base. The rationale behind this approach is to automatically detect the stepping stones, i.e. the behavior segments that have lead to a reward in the source task before the policy is efficient enough to get the reward on the target task. The approach is tested in simulation with a neuroevolution approach and on ball collecting tasks.
从终身学习的角度来看,机器人可能会面临不同但相关的情况。为了解决更复杂的任务,能够利用在第一学习阶段获得的知识可能是至关重要的。这就是迁移学习问题。本文在直接策略搜索算法的情况下解决了这个问题。没有离散状态,也没有动作是先验定义的。策略由控制器描述,该控制器根据传感器值计算发送到电机的命令。电机和传感器的值都可以连续。该方法依赖于基于种群的直接策略搜索算法,即进化算法。它利用了搜索过程中生成的众多行为。在对源任务进行学习时,将构建知识库。知识库旨在识别与所考虑的任务相关的最显著的行为部分。然后,在目标任务上利用知识库,采用奖励塑造方法:除了任务上的奖励外,策略还获得从知识库中计算的奖励。这种方法背后的基本原理是自动检测垫脚石,即在策略有效到足以在目标任务上获得奖励之前,在源任务中导致奖励的行为片段。该方法在神经进化方法和球收集任务的模拟中进行了测试。
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引用次数: 13
Attentional constraints and statistics in toddlers' word learning 幼儿词汇学习中的注意限制与统计
Sumarga H. Suanda, Seth B. Foster, Linda B. Smith, Chen Yu
Recent research supports the notion that word learning can be conceptualized as a statistical learning process. As many have noted however, statistical learning is constrained by processes such as attention and memory. In the current study, we observed, through toddler-perspective head cameras, toddlers' visual input as parents labeled novel objects during an object-play session. We then analyzed the co-occurrence statistics between words and objects that accumulated over the session. We also analyzed the constrained co-occurrence statistics which took into consideration the perceptual properties of the objects (e.g., object size) at the times words were uttered. We compared the information in these two types of statistical structures and examined which of the two best fit with the patterns of children's object-name learning. Implications of these results for statistical learning accounts of early word learning are discussed.
最近的研究支持这样一种观点,即单词学习可以被概念化为一个统计学习过程。然而,正如许多人注意到的那样,统计学习受到注意力和记忆等过程的限制。在当前的研究中,我们通过幼儿视角的头部摄像头观察到,当父母在物体游戏过程中标记新物体时,幼儿的视觉输入。然后,我们分析了在整个会话中积累的单词和对象之间的共现统计数据。我们还分析了约束共现统计,该统计考虑了说话时对象的感知属性(例如,对象大小)。我们比较了这两种统计结构中的信息,并检验了哪一种最符合儿童物体名称学习的模式。这些结果对早期单词学习的统计学习解释的意义进行了讨论。
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引用次数: 3
Grounding abstract action words through the hierarchical organization of motor primitives 通过运动原语的层次组织来建立抽象动作词
Francesca Stramandinoli, D. Marocco, A. Cangelosi
Cognitive developmental robotics is facing the challenge of building robots capable of working independently and/or with other agents in non-structured scenarios, which can autonomously react to dynamic changes that occur in the environment. Providing robots with the capability to comprehend and produce language in a “human-like” manner represents a powerful tool for flexible and intelligent interaction between robots and human beings. Robots endowed with linguistic capabilities, in fact, could better understand situations and exchange information; through language robots could cooperate and negotiate with human beings in order to accomplish shared plans. This work describes a neuro-robotics model for the acquisition of abstract action words in the iCub humanoid robot. We claim that the acquisition of concepts that refer to such abstract words (e.g. verbs like “use”, “make”) can be driven by action's organization. In the presented model the integration of low-level capabilities (e.g. perceptual and sensorimotor skills) enables the hierarchical organization of concepts that leads to the grounding of more general words.
认知发展机器人正面临着制造能够在非结构化场景中独立工作和/或与其他代理一起工作的机器人的挑战,这些机器人可以自主地对环境中发生的动态变化做出反应。为机器人提供以“类人”方式理解和产生语言的能力代表了机器人与人类之间灵活和智能交互的强大工具。事实上,被赋予语言能力的机器人可以更好地理解情况并交换信息;通过语言,机器人可以与人类合作和协商,以完成共同的计划。本文描述了一种用于iCub类人机器人抽象动作词获取的神经机器人模型。我们认为,与这些抽象词汇相关的概念的习得(如“use”、“make”等动词)可以由行动的组织驱动。在提出的模型中,低层次能力(如知觉和感觉运动技能)的整合使概念的层次组织成为可能,从而导致更一般的词汇的基础。
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引用次数: 6
Development of self-monitoring essential for vocal interactions in marmoset monkeys 狨猴声音互动中必要的自我监控发展
D. Takahashi, Darshana Narayanan, A. Ghazanfar
In humans, self-monitoring is essential for conversations [1] and this ability is fully developed only after 2 years of age [2]. How vocal self-monitoring changes over the course of development, how it evolved, and how it is mediated by neural mechanisms are not known. In this study, we use marmoset monkeys to address these issues. We recorded natural vocal exchanges between parent and infant monkeys and looked for evidence of self-monitoring in both the adults and the infants. Our results show that, similar to humans, adult marmosets have the capacity to self-monitor whereas infants do not. Using a computational model of marmoset vocal exchange dynamics [3] we investigated possible neural mechanism underlying the development of self-monitoring. Our model is based on the interactions between three neural structures (representing limbic, motor and auditory regions) with feedback connectivity inspired by published physiological and anatomical data. The simulations show that strengthening the inhibitory connection between auditory and limbic regions drives the development of self-monitoring and, ultimately, adult-like vocal behavior.
在人类中,自我监控对对话至关重要[1],这种能力只有在2岁后才能完全发展[2]。声音自我监控在发育过程中是如何变化的,它是如何进化的,以及它是如何由神经机制介导的,目前还不清楚。在这项研究中,我们使用狨猴来解决这些问题。我们记录了母猴和幼猴之间的自然声音交流,并寻找成年和幼猴自我监控的证据。我们的研究结果表明,与人类相似,成年狨猴有自我监控的能力,而婴儿没有。利用狨猴声音交换动力学的计算模型[3],我们研究了自我监控发展背后可能的神经机制。我们的模型基于三个神经结构(代表边缘,运动和听觉区域)之间的相互作用,并受到已发表的生理和解剖数据的启发。模拟表明,加强听觉和边缘区域之间的抑制联系,推动了自我监控的发展,并最终形成了成人般的发声行为。
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引用次数: 7
Impacts of environment, nervous system and movements of preterms on body map development: Fetus simulation with spiking neural network 环境、神经系统和运动对早产儿身体地图发育的影响:用尖峰神经网络模拟胎儿
Yasunori Yamada, Keiko Fujii, Y. Kuniyoshi
Recent developmental studies have shown the importance of interaction with the environment resulting from fetal spontaneous movements for the formation of body maps in the spinal cord and primary somatosensory area. However, the underlying mechanism as well as the factors which contribute to the development of body maps is largely unknown. Here, we simulated the development of the body map using a human fetus simulation, and investigated the contribution of three factors which often differ in normal fetuses and preterms: (i) developmental environment, (ii) nervous system and (iii) movement patterns. The fetus model has a musculoskeletal body as well as sensory organs for tactile and proprioception, which allows us to simulate sensory feedbacks resulting from interaction with the uterine environment. We simulated the development of body maps by using these sensory feedbacks as inputs to the spinal and somatosensory cortex models, which are spiking neural networks with leaky integrate-and-fire neurons and spike-timing-dependent synaptic plasticity. We showed that the networks under normal fetus conditions can learn body part-specific modular architectures and responses, and have neurons encoding specific postures and double-touch events. In contrast, we found that (i) a change in environment from inside to outside the uterus, (ii) an imbalance between excitation and inhibition of the nervous system and (iii) decrease in variation and complexity of movement patterns each lead to the development of abnormal body maps in terms of function and structure of learned networks. These results suggest that these factors influence or disrupt body map development in preterms and their subsequent cognitive development.
最近的发育研究表明,胎儿自发运动引起的与环境的相互作用对脊髓和初级体感区形成体图的重要性。然而,促进身体图谱发展的潜在机制和因素在很大程度上是未知的。在这里,我们使用人类胎儿模拟模拟了身体地图的发展,并研究了正常胎儿和早产儿通常不同的三个因素的贡献:(i)发育环境,(ii)神经系统和(iii)运动模式。胎儿模型具有肌肉骨骼的身体以及触觉和本体感觉的感觉器官,这使我们能够模拟与子宫环境相互作用产生的感觉反馈。我们通过使用这些感觉反馈作为脊髓和体感皮层模型的输入,模拟了身体图谱的发展,这些模型是带有泄漏的整合-激活神经元和突触时间依赖的突触可塑性的尖峰神经网络。我们发现,正常胎儿条件下的神经网络可以学习特定身体部位的模块化结构和反应,并且有神经元编码特定的姿势和触碰事件。相比之下,我们发现(i)从子宫内到子宫外环境的变化,(ii)神经系统兴奋和抑制之间的不平衡,以及(iii)运动模式的变化和复杂性的减少,都会导致学习网络功能和结构方面的异常身体图谱的发展。这些结果表明,这些因素影响或破坏了早产儿的身体地图发育及其随后的认知发展。
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引用次数: 38
Improving implicit communication in mixed human-robot teams with social force detection 基于社会力检测的人机混合团队隐式沟通改进
Bradley Hayes, B. Scassellati
One of the hallmarks of development is the transition of an agent from novice learner to able partner to experienced instructor. While most machine learning approaches focus on the first transition, we are interested in building an effective learning and development system that allows for the complete range of transitions to occur. In this paper, we present a mechanism enabling such transitions within the context of collaborative social tasks. We present a cooperative robot system capable of learning a hierarchical task execution from an experienced human user, collaborating safely with a knowledgeable human peer, and instructing a novice user based on the explicit inclusion of a feature within the planning and skill execution subsystems we've termed social force. We conclude with an evaluation of this feature's flexibility within a collaborative construction task, changing a robot's behaviors between student, peer, and instructor through simple manipulations of this feature's treatment within the planning subsystem.
发展的标志之一是代理人从初学者到有能力的合作伙伴再到有经验的指导者的转变。虽然大多数机器学习方法都专注于第一次过渡,但我们感兴趣的是建立一个有效的学习和发展系统,允许完整的过渡发生。在本文中,我们提出了一种在协作社会任务背景下实现这种转变的机制。我们提出了一种协作机器人系统,它能够从经验丰富的人类用户那里学习分层任务执行,与知识渊博的人类同伴安全地合作,并根据我们称之为社会力量的规划和技能执行子系统中明确包含的特征来指导新手用户。最后,我们评估了该功能在协作构建任务中的灵活性,通过在规划子系统中对该功能的处理进行简单的操作,改变了机器人在学生、同伴和教师之间的行为。
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引用次数: 8
Goal babbling with unknown ranges: A direction-sampling approach 未知范围的目标胡言乱语:一种方向采样方法
Matthias Rolf
Goal babbling is a recent concept for the efficient bootstrapping of sensorimotor coordination that is inspired by infants' early goal-directed movement attempts. Several studies have shown its superior performance compared to random motor babbling. Yet, previous implementations of goal babbling require knowledge of a set of achievable goals in advance. This paper introduces an approach to goal babbling that can bootstrap coordination skills without pre-specifying, or even representing, a set of goals. On the contrary, it can discover the ranges of achievable goals autonomously. This capability is demonstrated in a challenging task with up to 50 degrees of freedom, in which the discovery of possible outcomes is shown to be desperately intractable with random motor babbling.
目标咿呀学语是最近提出的一个概念,旨在有效地引导感觉运动协调,其灵感来自婴儿早期目标导向的运动尝试。几项研究表明,与随机运动牙牙学语相比,其性能优越。然而,之前的目标喋喋不休的实现需要事先了解一组可实现的目标。本文介绍了一种目标喋喋不休的方法,它可以在不预先指定甚至不代表一组目标的情况下引导协调技能。相反,它可以自主地发现可实现目标的范围。这种能力在一个具有高达50个自由度的挑战性任务中得到了证明,在这个任务中,发现可能的结果被证明是极其棘手的,而且是随机的运动牙牙学语。
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引用次数: 26
A robot to study the development of artwork appreciation through social interactions 一个机器人通过社会互动来研究艺术品欣赏的发展
A. Karaouzene, P. Gaussier, Denis Vidal
In this work, we present a model based on social referencing mechanisms for the artwork appreciation development. We show that trying to reach autonomous robot artwork preferences is an interesting framework for developmental robotics. Therefore, we present an application of our model in a natural environment. The museum as an experiment place, helps us to benefit from a large number of visitors with different backgrounds and personal interests, as well as provides the challenge of the learning and recognition of an important number of artefacts (heterogeneous set of objects in terms of size, culture). To overcome some limitations like the autonomy in the learning, we proposed a first model for cumulative learning using a second-order conditioning approach with very encouraging results.
在这项工作中,我们提出了一个基于社会参考机制的艺术品欣赏发展模型。我们表明,试图达到自主机器人艺术偏好是一个有趣的发展机器人框架。因此,我们提出了该模型在自然环境中的应用。博物馆作为一个实验场所,帮助我们从大量具有不同背景和个人兴趣的游客中受益,并提供了学习和识别重要数量的人工制品(在大小,文化方面异构的物体集合)的挑战。为了克服学习自主性等局限性,我们提出了第一个使用二阶条件反射方法的累积学习模型,并取得了非常令人鼓舞的结果。
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引用次数: 7
期刊
2013 IEEE Third Joint International Conference on Development and Learning and Epigenetic Robotics (ICDL)
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