在本文中，我们描述了一种表示音频信号的表示方法，以实现COVID-19检测任务。将原始音频样品用1D卷积过滤器进行处理，这些过滤器被参数化为余弦调制的高斯函数。这些内核的选择允许将滤纸解释为光滑的带通滤波器。过滤后的输出汇总，对数压缩并用于基于自我注意的相关加权机制。相关权重强调了时间频分解的关键区域，这对于下游任务很重要。该模型的后续层由复发架构组成，模型经过训练，以执行COVID-19检测任务。在我们对COSWARA数据集的实验中，我们表明，所提出的模型在基线系统以及其他表示学习方法上实现了显着的性能改进。此外，提出的方法被证明适用于语音和呼吸信号以及从较大的数据集中转移学习。
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受到计算机视觉的自我监督学习的最新进展的启发，在本文中，我们介绍了Delores，这是一种新的通用音频表示方法。我们的主要目标是使我们的网络学习在资源受限的设置（数据和计算）中，可以很好地跨越各种下游任务。受Barlow Twins目标功能的启发，我们建议学习对输入音频样本失真不变的嵌入，同时确保它们包含有关样本的非冗余信息。为此，我们测量了两个相同的网络的输出之间的互相关矩阵，该网络用从音频文件采样的音频段的变形版本中，使其尽可能接近身份矩阵。我们将大规模音频集数据集和FSD50K的一小部分组合用于自学学习，并且与最先进的算法相比，参数的一半不到一半。为了进行评估，我们将这些学习的表示形式转移到9个下游分类任务，包括语音，音乐和动物声音，并在不同的评估设置下显示竞争结果。除了简单明了，我们的预训练算法还可以通过其固有的构造本质来计算，并且不需要仔细的实施细节以避免琐碎或退化的解决方案。此外，我们对结果进行消融研究，并使我们的所有代码和预培训模型公开可用https://github.com/speech-lab-iitm/delores。
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We propose an ensemble approach to predict the labels in linear programming word problems. The entity identification and the meaning representation are two types of tasks to be solved in the NL4Opt competition. We propose the ensembleCRF method to identify the named entities for the first task. We found that single models didn't improve for the given task in our analysis. A set of prediction models predict the entities. The generated results are combined to form a consensus result in the ensembleCRF method. We present an ensemble text generator to produce the representation sentences for the second task. We thought of dividing the problem into multiple small tasks due to the overflow in the output. A single model generates different representations based on the prompt. All the generated text is combined to form an ensemble and produce a mathematical meaning of a linear programming problem.
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Mixup is a popular data augmentation technique for training deep neural networks where additional samples are generated by linearly interpolating pairs of inputs and their labels. This technique is known to improve the generalization performance in many learning paradigms and applications. In this work, we first analyze Mixup and show that it implicitly regularizes infinitely many directional derivatives of all orders. We then propose a new method to improve Mixup based on the novel insight. To demonstrate the effectiveness of the proposed method, we conduct experiments across various domains such as images, tabular data, speech, and graphs. Our results show that the proposed method improves Mixup across various datasets using a variety of architectures, for instance, exhibiting an improvement over Mixup by 0.8% in ImageNet top-1 accuracy.
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Multi-Scale and U-shaped Networks are widely used in various image restoration problems, including deblurring. Keeping in mind the wide range of applications, we present a comparison of these architectures and their effects on image deblurring. We also introduce a new block called as NFResblock. It consists of a Fast Fourier Transformation layer and a series of modified Non-Linear Activation Free Blocks. Based on these architectures and additions, we introduce NFResnet and NFResnet+, which are modified multi-scale and U-Net architectures, respectively. We also use three different loss functions to train these architectures: Charbonnier Loss, Edge Loss, and Frequency Reconstruction Loss. Extensive experiments on the Deep Video Deblurring dataset, along with ablation studies for each component, have been presented in this paper. The proposed architectures achieve a considerable increase in Peak Signal to Noise (PSNR) ratio and Structural Similarity Index (SSIM) value.
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Reinforcement learning (RL) operating on attack graphs leveraging cyber terrain principles are used to develop reward and state associated with determination of surveillance detection routes (SDR). This work extends previous efforts on developing RL methods for path analysis within enterprise networks. This work focuses on building SDR where the routes focus on exploring the network services while trying to evade risk. RL is utilized to support the development of these routes by building a reward mechanism that would help in realization of these paths. The RL algorithm is modified to have a novel warm-up phase which decides in the initial exploration which areas of the network are safe to explore based on the rewards and penalty scale factor.
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提出测试释放（PTR）是一个差异隐私框架，可符合局部功能的敏感性，而不是其全球敏感性。该框架通常用于以差异性私有方式释放强大的统计数据，例如中位数或修剪平均值。尽管PTR是十年前引入的常见框架，但在诸如Robust SGD之类的应用程序中使用它，我们需要许多自适应鲁棒的查询是具有挑战性的。这主要是由于缺乏Renyi差异隐私（RDP）分析，这是一种瞬间的私人深度学习方法的基础。在这项工作中，我们概括了标准PTR，并在目标函数界定全局灵敏度时得出了第一个RDP。我们证明，与直接分析的$（\ eps，\ delta）$ -DP相比，我们的RDP绑定的PTR可以得出更严格的DP保证。我们还得出了亚采样下PTR的算法特异性隐私扩增。我们表明，我们的界限比一般的上限和接近下限的界限要紧密得多。我们的RDP界限可以为PTR的许多自适应运行的组成而更严格的隐私损失计算。作为我们的分析的应用，我们表明PTR和我们的理论结果可用于设计私人变体，用于拜占庭强大的训练算法，这些变体使用可靠的统计数据用于梯度聚集。我们对不同数据集和体系结构的标签，功能和梯度损坏的设置进行实验。我们表明，与基线相比，基于PTR的私人和强大的培训算法可显着改善该实用性。
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装有传感器，执行器和电子控制单元（ECU）的现代车辆可以分为几个称为功能工作组（FWGS）的操作子系统。这些FWG的示例包括发动机系统，变速箱，燃油系统，制动器等。每个FWG都有相关的传感器通道，可以衡量车辆操作条件。这种丰富的数据环境有利于预测维护（PDM）技术的开发。削弱各种PDM技术的是需要强大的异常检测模型，该模型可以识别出明显偏离大多数数据的事件或观察结果，并且不符合正常车辆操作行为的明确定义的概念。在本文中，我们介绍了车辆性能，可靠性和操作（VEPRO）数据集，并使用它来创建一种基于多阶段的异常检测方法。利用时间卷积网络（TCN），我们的异常检测系统可以达到96％的检测准确性，并准确预测91％的真实异常。当利用来自多个FWG的传感器通道时，我们的异常检测系统的性能会改善。
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随着基于人工智能（AI）和机器学习（ML）技术的实用性的增长，对抗性攻击的威胁越来越大。有必要将这个生态系统的团队红色团结起来，以确定系统漏洞，潜在威胁，表征将增强系统鲁棒性并鼓励创造有效防御的属性。次要的需求是在不同的利益相关者，模型开发人员，用户和AI/ML安全专业人员等不同的利益相关者之间分享此AI安全威胁情报。在本文中，我们创建并描述了原型系统CTI4AI，以克服有条不紊地识别和共享AI/ML特定漏洞和威胁智能的需求。
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我们提出了一种名为ACLNET的新型深度学习模型，用于从地面图像中分割云。ACLNET同时使用深神经网络和机器学习（ML）算法来提取互补功能。具体而言，它使用有效网络-B0作为骨干，“``trous tos blacial pyramid boming''（ASPP）在多个接受场上学习，并从图像中提取细节细节。ACLNET还使用K-均值聚类来更精确地提取云边界。ACLNET对白天和夜间图像都有效。它提供的错误率较低，较高的召回率和更高的F1得分比Art最先进的云分割模型。ACLNET的源代码可在此处获得：https：//github.com/ckmvigil/aclnet。
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