模具分析是一种必不可少的数字方法,以及古代经济史的重要工具。然而,手动模具研究过于劳动密集型,可以全面研究罗马帝国等大型币。我们通过提出无监督计算模具分析的模型来解决这个问题,这可以减少大规模模具研究所需的时间投资,在许多情况下从多年到几周内完成了几个数量级。从计算机视觉观点来看,DIE研究提出了一个挑战的无监督的聚类问题,因为它们涉及一个不明显的和大量的高度相似的语义类别的不平衡尺寸。我们通过确定从贝叶斯距离聚类框架中的专门设计的基于高斯进程的关键点特征的硬币面之间的硬币面之间的异常来解决这些问题。通过分析1135罗马银币在64-66 C.E中进行了分析来证明我们的方法的功效。
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Generic Object Tracking (GOT) is the problem of tracking target objects, specified by bounding boxes in the first frame of a video. While the task has received much attention in the last decades, researchers have almost exclusively focused on the single object setting. Multi-object GOT benefits from a wider applicability, rendering it more attractive in real-world applications. We attribute the lack of research interest into this problem to the absence of suitable benchmarks. In this work, we introduce a new large-scale GOT benchmark, LaGOT, containing multiple annotated target objects per sequence. Our benchmark allows researchers to tackle key remaining challenges in GOT, aiming to increase robustness and reduce computation through joint tracking of multiple objects simultaneously. Furthermore, we propose a Transformer-based GOT tracker TaMOS capable of joint processing of multiple objects through shared computation. TaMOs achieves a 4x faster run-time in case of 10 concurrent objects compared to tracking each object independently and outperforms existing single object trackers on our new benchmark. Finally, TaMOs achieves highly competitive results on single-object GOT datasets, setting a new state-of-the-art on TrackingNet with a success rate AUC of 84.4%. Our benchmark, code, and trained models will be made publicly available.
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A critical step in sharing semantic content online is to map the structural data source to a public domain ontology. This problem is denoted as the Relational-To-Ontology Mapping Problem (Rel2Onto). A huge effort and expertise are required for manually modeling the semantics of data. Therefore, an automatic approach for learning the semantics of a data source is desirable. Most of the existing work studies the semantic annotation of source attributes. However, although critical, the research for automatically inferring the relationships between attributes is very limited. In this paper, we propose a novel method for semantically annotating structured data sources using machine learning, graph matching and modified frequent subgraph mining to amend the candidate model. In our work, Knowledge graph is used as prior knowledge. Our evaluation shows that our approach outperforms two state-of-the-art solutions in tricky cases where only a few semantic models are known.
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To apply federated learning to drug discovery we developed a novel platform in the context of European Innovative Medicines Initiative (IMI) project MELLODDY (grant n{\deg}831472), which was comprised of 10 pharmaceutical companies, academic research labs, large industrial companies and startups. The MELLODDY platform was the first industry-scale platform to enable the creation of a global federated model for drug discovery without sharing the confidential data sets of the individual partners. The federated model was trained on the platform by aggregating the gradients of all contributing partners in a cryptographic, secure way following each training iteration. The platform was deployed on an Amazon Web Services (AWS) multi-account architecture running Kubernetes clusters in private subnets. Organisationally, the roles of the different partners were codified as different rights and permissions on the platform and administrated in a decentralized way. The MELLODDY platform generated new scientific discoveries which are described in a companion paper.
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当今,机器人技术的新型机器人运动学和基于学习的应用程序的开发几乎完全在模拟中进行,然后才在现实世界中实施。特别是,与传统的操纵器相比,模块化可重构机器人(MRR)是工业机器人技术的令人兴奋的创新,有望更大的灵活性,提高可维护性和成本效益。但是,几十年来,没有像为机器人操纵器对模块进行模拟和模型组件的工具或标准化方法。我们介绍了工业模块化机器人技术的工具箱(Timor),这是一种python工具箱,可弥合此间隙并将模块化机器人技术集成在现有的仿真和优化管道中。我们的开源库配备了各种示例和教程,并且可以轻松地与现有的仿真工具集成在一起 - 尤其是通过提供任意模块化机器人组件的URDF导出,从而使快速模型生成。
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最近在视觉跟踪中成功的关键因素之一是专用基准的可用性。尽管对跟踪研究有很大的受益,但现有的基准并没有与以前相同的难度,而最近的跟踪器的性能则主要是由于(i)引入了更复杂的基于变形金刚的方法,并且(ii)缺乏各种情况,因此缺乏各种情况。不良的可见性,例如恶劣的天气条件,伪装和成像效应。我们介绍了Avist,这是一个专门的基准,用于在具有不良可见性的不同情况下进行视觉跟踪。 Avist包括120个具有80k注释框架的具有挑战性的序列,涵盖了18种不同的方案,这些场景大致分为五个具有42个对象类别的属性。远景的主要贡献是涵盖恶劣天气条件的多样化和挑战性的情况,例如浓雾,大雨和沙尘暴;阻塞效应,包括火,阳光和溅水;不利成像效应,例如,低光;目标效应,包括小目标和干扰物对象以及伪装。我们进一步基准了17个关于Avist的流行和最新跟踪器,对它们跨属性的跟踪性能进行了详细分析,这表明了性能改善的巨大空间。我们认为,远景可以通过补充现有的基准,开发新的创意跟踪解决方案,以继续推动最先进的界限,从而极大地使跟踪社区受益。我们的数据集以及完整的跟踪性能评估可在以下网址提供:https://github.com/visionml/pytracking
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探索黑盒机器学习(ML)模型的重要技术称为Shap(Shapley添加说明)。Shap值以公平的方式将预测分解为功能的贡献。我们将证明,对于具有添加性建模的一些或所有功能的增强树模型,此类特征的外形依赖图与其部分依赖图相对应,直到垂直移动。我们用XGBoost说明了结果。
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预测不确定性估计对于在现实世界自治系统中部署深层神经网络至关重要。但是,大多数成功的方法是计算密集型的。在这项工作中,我们试图在自主驾驶感知任务的背景下解决这些挑战。最近提出的确定性不确定性方法(DUM)只能部分满足其对复杂计算机视觉任务的可扩展性,这并不明显。在这项工作中,我们为高分辨率的语义分割推动了可扩展有效的DUM,它放松了Lipschitz约束通常会阻碍此类架构的实用性。我们通过利用在任意大小的可训练原型集上的区别最大化层来学习判别潜在空间。我们的方法在深层合奏,不确定性预测,图像分类,细分和单眼深度估计任务上取得了竞争成果。我们的代码可在https://github.com/ensta-u2is/ldu上找到
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TensorFlow GNN(TF-GNN)是张量曲线的图形神经网络的可扩展库。它是从自下而上设计的,以支持当今信息生态系统中发生的丰富的异质图数据。Google的许多生产模型都使用TF-GNN,最近已作为开源项目发布。在本文中,我们描述了TF-GNN数据模型,其KERAS建模API以及相关功能,例如图形采样,分布式训练和加速器支持。
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疾病的早​​期诊断可能会改善健康结果,例如较高的存活率和较低的治疗成本。随着电子健康记录中的大量信息(EHR),使用机器学习(ML)方法有很大的潜力来对疾病进展进行建模,以旨在早期预测疾病发作和其他结果。在这项工作中,我们采用了神经odes的最新创新来利用EHR的全部时间信息。我们提出了冰节(将临床嵌入与神经普通微分方程的整合),该体系结构在时间上整合临床代码和神经ODE的嵌入,以学习和预测EHR中的患者轨迹。我们将我们的方法应用于公共可用的模拟III和模拟IV数据集,与最新方法相比,报告了预测结果的改进,特别是针对EHR中经常观察到的临床代码。我们还表明,冰节在预测某些医疗状况(例如急性肾衰竭和肺心脏病)方面更有能力,并且还能够随着时间的推移产生患者的风险轨迹,以进行进一步的预测。
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