本文提出了一种通过深层插件（PNP）方法恢复数字视频的新方法。在贝叶斯形式主义下，该方法包括在交替的优化方案中使用深度卷积的降级网络代替先前的近端操作员。我们通过直接应用该方法来恢复降级视频观察结果的数字视频，从而将自己与先前的PNP工作区分开来。这样，可以将经过验证训练的网络重新用于其他视频修复任务。我们在视频脱张，超分辨率和随机缺失像素的插值方面的实验都显示出明显的好处，因为它使用专门为视频denoising设计的网络，因为它可以产生更好的恢复性能和更好的时间稳定性。使用相同的PNP公式。此外，我们的方法比较比较在序列的每个帧上分别应用不同的最新PNP方案。这在视频修复领域打开了新的观点。

许多生成模型通过使用确定性神经网络转换标准高斯随机变量来合成数据。这些模型包括变异自动编码器和生成对抗网络。在这项工作中，我们称它们为“推动”模型并研究其表现力。我们表明，这些生成网络的Lipschitz常数必须很大才能拟合多模式分布。更确切地说，我们表明，生成的和数据分布之间的总变化距离和kullback-leibler差异是根据模式分离和Lipschitz常数从下面界定的。由于限制神经网络的Lipschitz常数是稳定生成模型的一种常见方法，因此推动向前模型近似多模式分布的能力与训练的稳定性之间存在可证明的权衡。我们在一维和图像数据集上验证了我们的发现，并从经验上表明，在每个步骤中具有随机输入的堆叠网络组成的生成模型，例如扩散模型不会受到此类限制。

自Venkatakrishnan等人的开创性工作以来。 2013年，即插即用（PNP）方法在贝叶斯成像中变得普遍存在。这些方法通过将显式似然函数与预定由图像去噪算法隐式定义的明确定义，导出用于成像中的逆问题的最小均方误差（MMSE）或最大后验误差（MAP）估计器。文献中提出的PNP算法主要不同于他们用于优化或采样的迭代方案。在优化方案的情况下，一些最近的作品能够保证收敛到一个定点，尽管不一定是地图估计。在采样方案的情况下，据我们所知，没有已知的收敛证明。关于潜在的贝叶斯模型和估算器是否具有明确定义，良好的良好，并且具有支持这些数值方案所需的基本规律性属性，还存在重要的开放性问题。为了解决这些限制，本文开发了用于对PNP前锋进行贝叶斯推断的理论，方法和可忽略的会聚算法。我们介绍了两个算法：1）PNP-ULA（未调整的Langevin算法），用于蒙特卡罗采样和MMSE推断; 2）PNP-SGD（随机梯度下降）用于MAP推理。利用Markov链的定量融合的最新结果，我们为这两种算法建立了详细的收敛保证，在现实假设下，在去噪运营商使用的现实假设下，特别注意基于深神经网络的遣散者。我们还表明这些算法大致瞄准了良好的决策理论上最佳的贝叶斯模型。所提出的算法在几种规范问题上证明了诸如图像去纹，染色和去噪，其中它们用于点估计以及不确定的可视化和量化。

Scene understanding is a major challenge of today's computer vision. Center to this task is image segmentation, since scenes are often provided as a set of pictures. Nowadays, many such datasets also provide 3D geometry information given as a 3D point cloud acquired by a laser scanner or a depth camera. To exploit this geometric information, many current approaches rely on both a 2D loss and 3D loss, requiring not only 2D per pixel labels but also 3D per point labels. However obtaining a 3D groundtruth is challenging, time-consuming and error-prone. In this paper, we show that image segmentation can benefit from 3D geometric information without requiring any 3D groundtruth, by training the geometric feature extraction with a 2D segmentation loss in an end-to-end fashion. Our method starts by extracting a map of 3D features directly from the point cloud by using a lightweight and simple 3D encoder neural network. The 3D feature map is then used as an additional input to a classical image segmentation network. During training, the 3D features extraction is optimized for the segmentation task by back-propagation through the entire pipeline. Our method exhibits state-of-the-art performance with much lighter input dataset requirements, since no 3D groundtruth is required.

In the upcoming years, artificial intelligence (AI) is going to transform the practice of medicine in most of its specialties. Deep learning can help achieve better and earlier problem detection, while reducing errors on diagnosis. By feeding a deep neural network (DNN) with the data from a low-cost and low-accuracy sensor array, we demonstrate that it becomes possible to significantly improve the measurements' precision and accuracy. The data collection is done with an array composed of 32 temperature sensors, including 16 analog and 16 digital sensors. All sensors have accuracies between 0.5-2.0$^\circ$C. 800 vectors are extracted, covering a range from to 30 to 45$^\circ$C. In order to improve the temperature readings, we use machine learning to perform a linear regression analysis through a DNN. In an attempt to minimize the model's complexity in order to eventually run inferences locally, the network with the best results involves only three layers using the hyperbolic tangent activation function and the Adam Stochastic Gradient Descent (SGD) optimizer. The model is trained with a randomly-selected dataset using 640 vectors (80% of the data) and tested with 160 vectors (20%). Using the mean squared error as a loss function between the data and the model's prediction, we achieve a loss of only 1.47x10$^{-4}$ on the training set and 1.22x10$^{-4}$ on the test set. As such, we believe this appealing approach offers a new pathway towards significantly better datasets using readily-available ultra low-cost sensors.

Machine learning models are frequently employed to perform either purely physics-free or hybrid downscaling of climate data. However, the majority of these implementations operate over relatively small downscaling factors of about 4--6x. This study examines the ability of convolutional neural networks (CNN) to downscale surface wind speed data from three different coarse resolutions (25km, 48km, and 100km side-length grid cells) to 3km and additionally focuses on the ability to recover subgrid-scale variability. Within each downscaling factor, namely 8x, 16x, and 32x, we consider models that produce fine-scale wind speed predictions as functions of different input features: coarse wind fields only; coarse wind and fine-scale topography; and coarse wind, topography, and temporal information in the form of a timestamp. Furthermore, we train one model at 25km to 3km resolution whose fine-scale outputs are probability density function parameters through which sample wind speeds can be generated. All CNN predictions performed on one out-of-sample data outperform classical interpolation. Models with coarse wind and fine topography are shown to exhibit the best performance compared to other models operating across the same downscaling factor. Our timestamp encoding results in lower out-of-sample generalizability compared to other input configurations. Overall, the downscaling factor plays the largest role in model performance.

Banks hold a societal responsibility and regulatory requirements to mitigate the risk of financial crimes. Risk mitigation primarily happens through monitoring customer activity through Transaction Monitoring (TM). Recently, Machine Learning (ML) has been proposed to identify suspicious customer behavior, which raises complex socio-technical implications around trust and explainability of ML models and their outputs. However, little research is available due to its sensitivity. We aim to fill this gap by presenting empirical research exploring how ML supported automation and augmentation affects the TM process and stakeholders' requirements for building eXplainable Artificial Intelligence (xAI). Our study finds that xAI requirements depend on the liable party in the TM process which changes depending on augmentation or automation of TM. Context-relatable explanations can provide much-needed support for auditing and may diminish bias in the investigator's judgement. These results suggest a use case-specific approach for xAI to adequately foster the adoption of ML in TM.

自动语音识别（ASR）系统的转录质量在转录来自看不见的域的音频时会大大降低。我们提出了一种无监督的误差校正方法，用于无监督的ASR域适应性，旨在恢复域不匹配引起的转录误差。与依靠转录音频进行训练的现有校正方法不同，我们的方法仅需要针对目标域的未标记数据，在该数据中，将伪标记技术应用于生成校正培训样品。为了减少对伪数据的过度拟合，我们还提出了一个编码器校正模型，该模型可以考虑其他信息，例如对话上下文和声学特征。实验结果表明，我们的方法在未适应的ASR系统中获得了显着的单词错误率（WER）。校正模型也可以在其他适应方法的基础上应用，以相对额外的改善。

每个自动驾驶数据集都有不同的传感器配置，源自不同的地理区域并涵盖各种情况。结果，3D检测器倾向于过度拟合他们的数据集。当在一个数据集上训练检测器并在另一个数据集上进行测试时，这会导致精度急剧下降。我们观察到激光扫描模式差异构成了这种降低性能的很大组成部分。我们通过设计一个新颖的以观看者为中心的表面完成网络（VCN）来完成我们的方法，以在无监督的域适应框架内完成感兴趣的对象表面，从而解决此问题。使用See-VCN，我们获得了跨数据集的对象的统一表示，从而使网络可以专注于学习几何形状，而不是过度拟合扫描模式。通过采用域不变表示，可以将SEE-VCN归类为一种多目标域适应方法，在该方法中无需注释或重新训练才能获得新的扫描模式的3D检测。通过广泛的实验，我们表明我们的方法在多个域适应设置中优于先前的域适应方法。我们的代码和数据可在https://github.com/darrenjkt/see-vcn上找到。

与人类驾驶相比，自动驾驶汽车有可能降低事故率。此外，这是自动车辆在过去几年中快速发展的动力。在高级汽车工程师（SAE）自动化级别中，车辆和乘客的安全责任从驾驶员转移到自动化系统，因此对这种系统进行彻底验证至关重要。最近，学术界和行业将基于方案的评估作为道路测试的互补方法，减少了所需的整体测试工作。在将系统的缺陷部署在公共道路上之前，必须确定系统的缺陷，因为没有安全驱动程序可以保证这种系统的可靠性。本文提出了基于强化学习（RL）基于场景的伪造方法，以在人行横道交通状况中搜索高风险场景。当正在测试的系统（SUT）不满足要求时，我们将场景定义为风险。我们的RL方法的奖励功能是基于英特尔的责任敏感安全性（RSS），欧几里得距离以及与潜在碰撞的距离。