This work aims at showing that it is feasible and safe to use a swarm of Unmanned Aerial Vehicles (UAVs) indoors alongside humans. UAVs are increasingly being integrated under the Industry 4.0 framework. UAV swarms are primarily deployed outdoors in civil and military applications, but the opportunities for using them in manufacturing and supply chain management are immense. There is extensive research on UAV technology, e.g., localization, control, and computer vision, but less research on the practical application of UAVs in industry. UAV technology could improve data collection and monitoring, enhance decision-making in an Internet of Things framework and automate time-consuming and redundant tasks in the industry. However, there is a gap between the technological developments of UAVs and their integration into the supply chain. Therefore, this work focuses on automating the task of transporting packages utilizing a swarm of small UAVs operating alongside humans. MoCap system, ROS, and unity are used for localization, inter-process communication and visualization. Multiple experiments are performed with the UAVs in wander and swarm mode in a warehouse like environment.
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Human Activity Recognition (HAR) using on-body devices identifies specific human actions in unconstrained environments. HAR is challenging due to the inter and intra-variance of human movements; moreover, annotated datasets from on-body devices are scarce. This problem is mainly due to the difficulty of data creation, i.e., recording, expensive annotation, and lack of standard definitions of human activities. Previous works demonstrated that transfer learning is a good strategy for addressing scenarios with scarce data. However, the scarcity of annotated on-body device datasets remains. This paper proposes using datasets intended for human-pose estimation as a source for transfer learning; specifically, it deploys sequences of annotated pixel coordinates of human joints from video datasets for HAR and human pose estimation. We pre-train a deep architecture on four benchmark video-based source datasets. Finally, an evaluation is carried out on three on-body device datasets improving HAR performance.
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Language models have become increasingly popular in recent years for tasks like information retrieval. As use-cases become oriented toward specific domains, fine-tuning becomes default for standard performance. To fine-tune these models for specific tasks and datasets, it is necessary to carefully tune the model's hyperparameters and training techniques. In this paper, we present an in-depth analysis of the performance of four transformer-based language models on the task of biomedical information retrieval. The models we consider are DeepMind's RETRO (7B parameters), GPT-J (6B parameters), GPT-3 (175B parameters), and BLOOM (176B parameters). We compare their performance on the basis of relevance, accuracy, and interpretability, using a large corpus of 480000 research papers on protein structure/function prediction as our dataset. Our findings suggest that smaller models, with <10B parameters and fine-tuned on domain-specific datasets, tend to outperform larger language models on highly specific questions in terms of accuracy, relevancy, and interpretability by a significant margin (+50% on average). However, larger models do provide generally better results on broader prompts.
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我们为梯度下降提供了收敛分析,以解决高斯分布中不可知的问题。与研究零偏差的设置的先前工作不同,我们考虑了当relu函数的偏见非零时更具挑战性的情况。我们的主要结果确定,从随机初始化开始,从多项式迭代梯度下降输出中,具有很高的概率,与最佳relu函数的误差相比,可以实现竞争错误保证。我们还提供有限的样本保证,这些技术将其推广到高斯以外的更广泛的边际分布。
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在本文中,我们提出了一个自然的单个偏好(IP)稳定性的概念,该概念要求每个数据点平均更接近其自身集群中的点,而不是其他群集中的点。我们的概念可以从几个角度的动机,包括游戏理论和算法公平。我们研究了与我们提出的概念有关的几个问题。我们首先表明,确定给定数据集通常允许进行IP稳定的聚类通常是NP-HARD。结果,我们探索了在某些受限度量空间中查找IP稳定聚类的有效算法的设计。我们提出了一种poly Time算法,以在实际线路上找到满足精确IP稳定性的聚类,并有效地算法来找到针对树度量的IP稳定2聚类。我们还考虑放松稳定性约束,即,与其他任何集群相比,每个数据点都不应太远。在这种情况下,我们提供具有不同保证的多时间算法。我们在实际数据集上评估了一些算法和几种标准聚类方法。
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我们研究在对抗性腐败下学习通用线性模型的问题。我们分析了一种经典的启发式,称为迭代修剪的最大似然估计量,该估计量已知在实践中有效地抵抗标签腐败。在标签腐败下,我们证明了这个简单的估计器在各种广泛的线性模型上实现了最小风险,包括高斯回归,泊松回归和二项式回归。最后,我们将估计器扩展到标签和协变量腐败的更具挑战性的设置,并在该环境中证明其稳健性和最佳性。
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噪声对比度估计的最新研究表明,从经验上讲,从理论上讲,尽管在对比度损失中拥有更多的“负样本”,但最初在阈值中提高了下游分类的性能,但由于“碰撞覆盖“贸易”,它都会损害下游性能-离开。但是,对比度学习中固有的现象是如此吗?我们在一个简单的理论环境中显示,通过从基础潜在类采样(由Saunshi等人引入(ICML 2019)),产生正对,表明表示(人口)对比度损失的下游性能实际上确实确实确实如此。不会随着负样本的数量降低。一路上,我们在框架中给出了最佳表示形式的结构表征,以进行噪声对比估计。我们还为CIFAR-10和CIFAR-100数据集的理论结果提供了经验支持。
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对抗性鲁棒性是各种现代机器学习应用中的关键财产。虽然它是最近几个理论研究的主题,但与对抗性稳健性有关的许多重要问题仍然是开放的。在这项工作中,我们研究了有关对抗对抗鲁棒性的贝叶斯最优性的根本问题。我们提供了一般的充分条件,可以保证贝叶斯最佳分类器的存在,以满足对抗性鲁棒性。我们的结果可以提供一种有用的工具,用于随后研究对抗性鲁棒性及其一致性的替代损失。这份稿件是“关于普通贝叶斯分类器的存在”在神经潮端中发表的延伸版本。原始纸张的结果不适用于一些非严格凸的规范。在这里,我们将结果扩展到所有可能的规范。
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为了帮助现有的Telemental Mechanical服务,我们提出Deeptmh,这是一种通过提取对应于心理学文献经常使用的情感和认知特征的潜视和认知特征来模拟Telemental Mealth Session视频的新框架。我们的方法利用半监督学习的进步来解决Telemental Healts Sessience视频领域的数据稀缺,包括多模式半监督GaN,以检测Telemental卫生课程中的重要心理健康指标。我们展示了我们框架的有用性和与现有工作中的两项任务对比:参与回归和价值回归,这两者都对心理学家在眼药性健康会议期间对心理学家很重要。我们的框架报告了RMSE在参与回归中的RMSE方法的40%,并在价值唤醒回归中的SOTA方法中的50%改善。为了解决Telemental Health空间中公开的数据集的稀缺性,我们发布了一个新的数据集,Medica,用于心理健康患者参与检测。我们的数据集,Medica由1299个视频组成,每节3秒长。据我们所知,我们的方法是基于心理驱动的情感和认知功能来模拟Telemental Healts会话数据的第一种方法,这也通过利用半监督设置来解决数据稀疏性。
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Covid-19疫苗是我们最好的赌注,用于减轻大流行的持续冲击。但是,疫苗也预计将是有限的资源。最佳分配策略,特别是在具有访问不公平的国家和热点的时间分离,可能是停留疾病传播的有效方式。我们通过提出一种新的管道VACSIM来实现这个问题,将深度加强学习模型延装到用于优化Covid-19疫苗的分布的上下文的匪徒方法中。虽然加强学习模型建议了更好的行动和奖励,但上下文匪徒允许在现实世界场景中每天到日常实施的在线修改。我们评估此框架,防止与印度五个不同状态的Covid-19案例发生比例分配疫苗的天真分配方法(Assam,Delhi,Jharkhand,Maharashtra和Nagaland),并展示高达9039潜力的潜在感染,并增加了显着增加在通过VacSim方法的45天内限制差异的疗效。我们的型号和平台对印度所有国家和潜在的全球范围内都是可扩张的。我们还提出了新的评估策略,包括标准的基于区间模型的预测和对我们模型的因果关系评估。由于所有模型都携带可能需要在各种情况下进行测试的假设,因此我们开源我们的模型Vackim并贡献了与Openai健身房兼容的新型加固学习环境,以使其在全球的现实世界应用中可扩展。 (http://vacsim.tavlab.iiitd.edu.in:8000/)。
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