Over the last years, significant advances have been made in robotic manipulation, but still, the handling of non-rigid objects, such as cloth garments, is an open problem. Physical interaction with non-rigid objects is uncertain and complex to model. Thus, extracting useful information from sample data can considerably improve modeling performance. However, the training of such models is a challenging task due to the high-dimensionality of the state representation. In this paper, we propose Controlled Gaussian Process Dynamical Model (CGPDM) for learning high-dimensional, nonlinear dynamics by embedding it in a low-dimensional manifold. A CGPDM is constituted by a low-dimensional latent space with an associated dynamics where external control variables can act and a mapping to the observation space. The parameters of both maps are marginalized out by considering Gaussian Process (GP) priors. Hence, a CGPDM projects a high-dimensional state space into a smaller dimension latent space in which is feasible to learn the system dynamics from training data. The modeling capacity of CGPDM has been tested in both a simulated and a real scenario, where it proved to be capable of generalizing over a wide range of movements and confidently predicting the cloth motions obtained by previously unseen sequences of control actions.
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社会互动网络是建立文明的基材。通常,我们与我们喜欢的人建立新的纽带,或者认为通过第三方的干预,我们的关系损害了。尽管它们的重要性和这些过程对我们的生活产生的巨大影响,但对它们的定量科学理解仍处于起步阶段,这主要是由于很难收集大量的社交网络数据集,包括个人属性。在这项工作中,我们对13所学校的真实社交网络进行了彻底的研究,其中3,000多名学生和60,000名宣布正面关系和负面关系,包括对所有学生的个人特征的测试。我们引入了一个度量标准 - “三合会影响”,该指标衡量了最近的邻居在其接触关系中的影响。我们使用神经网络来预测关系,并根据他们的个人属性或三合会的影响来提取两个学生是朋友或敌人的可能性。或者,我们可以使用网络结构的高维嵌入来预测关系。值得注意的是,三合会影响(一个简单的一维度量)在预测两个学生之间的关系方面达到了最高的准确性。我们假设从神经网络中提取的概率 - 三合会影响的功能和学生的个性 - 控制真实社交网络的演变,为这些系统的定量研究开辟了新的途径。
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数据增强是自然语言处理(NLP)模型的鲁棒性评估的重要组成部分,以及增强他们培训的数据的多样性。在本文中,我们呈现NL-Cogmenter,这是一种新的参与式Python的自然语言增强框架,它支持创建两个转换(对数据的修改)和过滤器(根据特定功能的数据拆分)。我们描述了框架和初始的117个变换和23个过滤器,用于各种自然语言任务。我们通过使用其几个转换来分析流行自然语言模型的鲁棒性来证明NL-Upmenter的功效。基础架构,Datacards和稳健性分析结果在NL-Augmenter存储库上公开可用(\ url {https://github.com/gem-benchmark/nl-augmenter})。
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在本文中,我们为采样通信场景中的一类多机器人系统提出了一种反向运动控制器。目标是使一组机器人执行轨迹跟踪{以协调的方式}当通信的采样时间是不可忽略的,破坏标准控制设计的理论收敛保证。鉴于配置空间中可行的期望轨迹,所提出的控制器从采样时间瞬间从系统接收测量,并计算由低级控制器跟踪的机器人的速度引用。我们提出了一个共同设计的反馈加上馈电控制器,具有可提供的稳定性和误差会聚保证,并进一步表明所获得的控制器是可分散的实现的可供选择。我们使用现实模拟器(飞行起重机)的电缆悬挂负荷的协同空中操纵方案中的数值模拟来测试所提出的控制策略。最后,我们将建议的分散控制器与集中式方法进行比较,可通过智能启发式调整反馈增益,并表明它实现了可比性。
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在这项工作中,我们介绍了一种光电尖峰,能够以超速率($ \ \左右100磅/光学尖峰)和低能耗($ <$ PJ /秒码)运行。所提出的系统结合了具有负差分电导的可激发谐振隧道二极管(RTD)元件,耦合到纳米级光源(形成主节点)或光电探测器(形成接收器节点)。我们在数值上学习互连的主接收器RTD节点系统的尖峰动态响应和信息传播功能。使用脉冲阈值和集成的关键功能,我们利用单个节点来对顺序脉冲模式进行分类,并对图像特征(边缘)识别执行卷积功能。我们还展示了光学互连的尖峰神经网络模型,用于处理超过10 Gbps的时空数据,具有高推理精度。最后,我们展示了利用峰值定时依赖性可塑性的片外监督的学习方法,使能RTD的光子尖峰神经网络。这些结果证明了RTD尖峰节点用于低占地面积,低能量,高速光电实现神经形态硬件的潜在和可行性。
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Covid-19(2019年冠状病毒病)的爆发改变了世界。根据世界卫生组织(WHO)的说法,已确认有超过1亿个COVID案件,其中包括超过240万人死亡。早期发现该疾病非常重要,并且已证明使用医学成像,例如胸部X射线(CXR)和胸部计算机断层扫描(CCT)是一个极好的解决方案。但是,此过程要求临床医生在手动和耗时的任务中进行此操作,这在试图加快诊断加快时并不理想。在这项工作中,我们提出了一个基于概率支持向量机(SVM)的集成分类器,以识别肺炎模式,同时提供有关分类可靠性的信息。具体而言,将每个CCT扫描分为立方斑块,并且每个CCT扫描中包含的特征都通过应用核PCA提取。在合奏中使用基本分类器使我们的系统能够识别肺炎模式,无论其尺寸或位置如何。然后,根据每个单个分类的可靠性,将每个单独的贴片的决策组合成一个全局:不确定性越低,贡献越高。在实际情况下评估性能,准确度为97.86%。获得的大型性能和系统的简单性(在CCT图像中使用深度学习将导致巨大的计算成本)证明我们的建议在现实世界中的适用性。
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Process monitoring and control are essential in modern industries for ensuring high quality standards and optimizing production performance. These technologies have a long history of application in production and have had numerous positive impacts, but also hold great potential when integrated with Industry 4.0 and advanced machine learning, particularly deep learning, solutions. However, in order to implement these solutions in production and enable widespread adoption, the scalability and transferability of deep learning methods have become a focus of research. While transfer learning has proven successful in many cases, particularly with computer vision and homogenous data inputs, it can be challenging to apply to heterogeneous data. Motivated by the need to transfer and standardize established processes to different, non-identical environments and by the challenge of adapting to heterogeneous data representations, this work introduces the Domain Adaptation Neural Network with Cyclic Supervision (DBACS) approach. DBACS addresses the issue of model generalization through domain adaptation, specifically for heterogeneous data, and enables the transfer and scalability of deep learning-based statistical control methods in a general manner. Additionally, the cyclic interactions between the different parts of the model enable DBACS to not only adapt to the domains, but also match them. To the best of our knowledge, DBACS is the first deep learning approach to combine adaptation and matching for heterogeneous data settings. For comparison, this work also includes subspace alignment and a multi-view learning that deals with heterogeneous representations by mapping data into correlated latent feature spaces. Finally, DBACS with its ability to adapt and match, is applied to a virtual metrology use case for an etching process run on different machine types in semiconductor manufacturing.
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There is a dramatic shortage of skilled labor for modern vineyards. The Vinum project is developing a mobile robotic solution to autonomously navigate through vineyards for winter grapevine pruning. This necessitates an autonomous navigation stack for the robot pruning a vineyard. The Vinum project is using the quadruped robot HyQReal. This paper introduces an architecture for a quadruped robot to autonomously move through a vineyard by identifying and approaching grapevines for pruning. The higher level control is a state machine switching between searching for destination positions, autonomously navigating towards those locations, and stopping for the robot to complete a task. The destination points are determined by identifying grapevine trunks using instance segmentation from a Mask Region-Based Convolutional Neural Network (Mask-RCNN). These detections are sent through a filter to avoid redundancy and remove noisy detections. The combination of these features is the basis for the proposed architecture.
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Ithaca is a Fuzzy Logic (FL) plugin for developing artificial intelligence systems within the Unity game engine. Its goal is to provide an intuitive and natural way to build advanced artificial intelligence systems, making the implementation of such a system faster and more affordable. The software is made up by a C\# framework and an Application Programming Interface (API) for writing inference systems, as well as a set of tools for graphic development and debugging. Additionally, a Fuzzy Control Language (FCL) parser is provided in order to import systems previously defined using this standard.
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Quantum Machine Learning (QML) shows how it maintains certain significant advantages over machine learning methods. It now shows that hybrid quantum methods have great scope for deployment and optimisation, and hold promise for future industries. As a weakness, quantum computing does not have enough qubits to justify its potential. This topic of study gives us encouraging results in the improvement of quantum coding, being the data preprocessing an important point in this research we employ two dimensionality reduction techniques LDA and PCA applying them in a hybrid way Quantum Support Vector Classifier (QSVC) and Variational Quantum Classifier (VQC) in the classification of Diabetes.
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