Existing 3D-aware image synthesis approaches mainly focus on generating a single canonical object and show limited capacity in composing a complex scene containing a variety of objects. This work presents DisCoScene: a 3Daware generative model for high-quality and controllable scene synthesis. The key ingredient of our method is a very abstract object-level representation (i.e., 3D bounding boxes without semantic annotation) as the scene layout prior, which is simple to obtain, general to describe various scene contents, and yet informative to disentangle objects and background. Moreover, it serves as an intuitive user control for scene editing. Based on such a prior, the proposed model spatially disentangles the whole scene into object-centric generative radiance fields by learning on only 2D images with the global-local discrimination. Our model obtains the generation fidelity and editing flexibility of individual objects while being able to efficiently compose objects and the background into a complete scene. We demonstrate state-of-the-art performance on many scene datasets, including the challenging Waymo outdoor dataset. Project page: https://snap-research.github.io/discoscene/

指定的实体识别（NER）或从临床文本中提取概念是识别文本中的实体并将其插入诸如问题，治疗，测试，临床部门，事件（例如录取和出院）等类别的任务。 NER构成了处理和利用电子健康记录（EHR）的非结构化数据的关键组成部分。尽管识别概念的跨度和类别本身是一项具有挑战性的任务，但这些实体也可能具有诸如否定属性，即否定其含义暗示着指定实体的消费者。几乎没有研究致力于将实体及其合格属性一起确定。这项研究希望通过将NER任务建模为有监督的多标签标记问题，为检测实体及其相应属性做出贡献。在本文中，我们提出了3种架构来实现此多标签实体标签：Bilstm N-CRF，Bilstm-Crf-Smax-TF和Bilstm N-CRF-TF。我们在2010 I2B2/VA和I2B2 2012共享任务数据集上评估了这些方法。我们的不同模型分别在I2B2 2010/VA和I2B2 2012上获得最佳NER F1分数为0. 894和0.808。在I2B2 2010/VA和I2B2 2012数据集上，获得的最高跨度微积的F1极性得分分别为0.832和0.836，获得的最高宏观平均F1极性得分分别为0.924和0.888。对I2B2 2012数据集进行的模态研究显示，基于SPAN的微平均F1和宏观平均F1的高分分别为0.818和0.501。

脑小血管疾病的成像标记提供了有关脑部健康的宝贵信息，但是它们的手动评估既耗时又受到实质性内部和间际变异性的阻碍。自动化评级可能受益于生物医学研究以及临床评估，但是现有算法的诊断可靠性尚不清楚。在这里，我们介绍了\ textIt {血管病变检测和分割}（\ textit {v textit {where valdo？}）挑战，该挑战是在国际医学图像计算和计算机辅助干预措施（MICCAI）的卫星事件中运行的挑战（MICCAI） 2021.这一挑战旨在促进大脑小血管疾病的小而稀疏成像标记的自动检测和分割方法的开发，即周围空间扩大（EPVS）（任务1），脑微粒（任务2）和预先塑造的鞋类血管起源（任务3），同时利用弱和嘈杂的标签。总体而言，有12个团队参与了针对一个或多个任务的解决方案的挑战（任务1 -EPVS 4，任务2 -Microbleeds的9个，任务3 -lacunes的6个）。多方数据都用于培训和评估。结果表明，整个团队和跨任务的性能都有很大的差异，对于任务1- EPV和任务2-微型微型且对任务3 -lacunes尚无实际的结果，其结果尤其有望。它还强调了可能阻止个人级别使用的情况的性能不一致，同时仍证明在人群层面上有用。

物理测量构成学术论文，工程报告和Web表中的大部分数字。当前基准缺乏对测量预用语言模型的正确评估，妨碍了开发新方法的研究，并将它们应用于数值任务。为此，我们介绍了一种新颖的任务，屏蔽测量预测（MMP），其中模型学习与其相关联的屏蔽文本一起重建一个数字。 MMP对培训新的数控模型以及评估现有系统的算法。为了解决这项任务，我们介绍了一个新的生成屏蔽测量（Gemm）模型，共同学习以预测数字以及其单位。我们使用各种消融和基线进行细粒度分析。我们使用线性探测传统的预磨削变压器模型（Roberta）来表明，它们显着提高了训练有素的数字单元模型，突出了这项新任务的难度和我们提出的预测方法的好处。我们希望本框架在未来建立更加强大的数值推理系统的进展加速。

机器人操纵可以配制成诱导一系列空间位移：其中移动的空间可以包括物体，物体的一部分或末端执行器。在这项工作中，我们提出了一个简单的模型架构，它重新排列了深度功能，以从视觉输入推断出可视输入的空间位移 - 这可以参数化机器人操作。它没有对象的假设（例如规范姿势，模型或关键点），它利用空间对称性，并且比我们学习基于视觉的操纵任务的基准替代方案更高的样本效率，并且依赖于堆叠的金字塔用看不见的物体组装套件;从操纵可变形的绳索，以将堆积的小物体推动，具有闭环反馈。我们的方法可以表示复杂的多模态策略分布，并推广到多步顺序任务，以及6dof拾取器。 10个模拟任务的实验表明，它比各种端到端基线更快地学习并概括，包括使用地面真实对象姿势的政策。我们在现实世界中使用硬件验证我们的方法。实验视频和代码可在https://transporternets.github.io获得

Machine learning models are typically evaluated by computing similarity with reference annotations and trained by maximizing similarity with such. Especially in the bio-medical domain, annotations are subjective and suffer from low inter- and intra-rater reliability. Since annotations only reflect the annotation entity's interpretation of the real world, this can lead to sub-optimal predictions even though the model achieves high similarity scores. Here, the theoretical concept of Peak Ground Truth (PGT) is introduced. PGT marks the point beyond which an increase in similarity with the reference annotation stops translating to better Real World Model Performance (RWMP). Additionally, a quantitative technique to approximate PGT by computing inter- and intra-rater reliability is proposed. Finally, three categories of PGT-aware strategies to evaluate and improve model performance are reviewed.

A "heart attack" or myocardial infarction (MI), occurs when an artery supplying blood to the heart is abruptly occluded. The "gold standard" method for imaging MI is Cardiovascular Magnetic Resonance Imaging (MRI), with intravenously administered gadolinium-based contrast (late gadolinium enhancement). However, no "gold standard" fully automated method for the quantification of MI exists. In this work, we propose an end-to-end fully automatic system (MyI-Net) for the detection and quantification of MI in MRI images. This has the potential to reduce the uncertainty due to the technical variability across labs and inherent problems of the data and labels. Our system consists of four processing stages designed to maintain the flow of information across scales. First, features from raw MRI images are generated using feature extractors built on ResNet and MoblieNet architectures. This is followed by the Atrous Spatial Pyramid Pooling (ASPP) to produce spatial information at different scales to preserve more image context. High-level features from ASPP and initial low-level features are concatenated at the third stage and then passed to the fourth stage where spatial information is recovered via up-sampling to produce final image segmentation output into: i) background, ii) heart muscle, iii) blood and iv) scar areas. New models were compared with state-of-art models and manual quantification. Our models showed favorable performance in global segmentation and scar tissue detection relative to state-of-the-art work, including a four-fold better performance in matching scar pixels to contours produced by clinicians.

Graph neural networks (GNN) have become the default machine learning model for relational datasets, including protein interaction networks, biological neural networks, and scientific collaboration graphs. We use tools from statistical physics and random matrix theory to precisely characterize generalization in simple graph convolution networks on the contextual stochastic block model. The derived curves are phenomenologically rich: they explain the distinction between learning on homophilic and heterophilic graphs and they predict double descent whose existence in GNNs has been questioned by recent work. Our results are the first to accurately explain the behavior not only of a stylized graph learning model but also of complex GNNs on messy real-world datasets. To wit, we use our analytic insights about homophily and heterophily to improve performance of state-of-the-art graph neural networks on several heterophilic benchmarks by a simple addition of negative self-loop filters.

In this paper, we propose a new neural network architecture based on the H2 matrix. Even though networks with H2-inspired architecture already exist, and our approach is designed to reduce memory costs and improve performance by taking into account the sparsity template of the H2 matrix. In numerical comparison with alternative neural networks, including the known H2-based ones, our architecture showed itself as beneficial in terms of performance, memory, and scalability.

Semi-supervised learning (SSL) has made significant strides in the field of remote sensing. Finding a large number of labeled datasets for SSL methods is uncommon, and manually labeling datasets is expensive and time-consuming. Furthermore, accurately identifying remote sensing satellite images is more complicated than it is for conventional images. Class-imbalanced datasets are another prevalent phenomenon, and models trained on these become biased towards the majority classes. This becomes a critical issue with an SSL model's subpar performance. We aim to address the issue of labeling unlabeled data and also solve the model bias problem due to imbalanced datasets while achieving better accuracy. To accomplish this, we create "artificial" labels and train a model to have reasonable accuracy. We iteratively redistribute the classes through resampling using a distribution alignment technique. We use a variety of class imbalanced satellite image datasets: EuroSAT, UCM, and WHU-RS19. On UCM balanced dataset, our method outperforms previous methods MSMatch and FixMatch by 1.21% and 0.6%, respectively. For imbalanced EuroSAT, our method outperforms MSMatch and FixMatch by 1.08% and 1%, respectively. Our approach significantly lessens the requirement for labeled data, consistently outperforms alternative approaches, and resolves the issue of model bias caused by class imbalance in datasets.