Brain tumor classification is crucial for clinical analysis and an effective treatment plan to cure patients. Deep learning models help radiologists to accurately and efficiently analyze tumors without manual intervention. However, brain tumor analysis is challenging because of its complex structure, texture, size, location, and appearance. Therefore, a novel deep residual and regional-based Res-BRNet Convolutional Neural Network (CNN) is developed for effective brain tumor (Magnetic Resonance Imaging) MRI classification. The developed Res-BRNet employed Regional and boundary-based operations in a systematic order within the modified spatial and residual blocks. Moreover, the spatial block extract homogeneity and boundary-defined features at the abstract level. Furthermore, the residual blocks employed at the target level significantly learn local and global texture variations of different classes of brain tumors. The efficiency of the developed Res-BRNet is evaluated on a standard dataset; collected from Kaggle and Figshare containing various tumor categories, including meningioma, glioma, pituitary, and healthy images. Experiments prove that the developed Res-BRNet outperforms the standard CNN models and attained excellent performances (accuracy: 98.22%, sensitivity: 0.9811, F-score: 0.9841, and precision: 0.9822) on challenging datasets. Additionally, the performance of the proposed Res-BRNet indicates a strong potential for medical image-based disease analyses.

Optical coherence tomography (OCT) captures cross-sectional data and is used for the screening, monitoring, and treatment planning of retinal diseases. Technological developments to increase the speed of acquisition often results in systems with a narrower spectral bandwidth, and hence a lower axial resolution. Traditionally, image-processing-based techniques have been utilized to reconstruct subsampled OCT data and more recently, deep-learning-based methods have been explored. In this study, we simulate reduced axial scan (A-scan) resolution by Gaussian windowing in the spectral domain and investigate the use of a learning-based approach for image feature reconstruction. In anticipation of the reduced resolution that accompanies wide-field OCT systems, we build upon super-resolution techniques to explore methods to better aid clinicians in their decision-making to improve patient outcomes, by reconstructing lost features using a pixel-to-pixel approach with an altered super-resolution generative adversarial network (SRGAN) architecture.

Although action recognition systems can achieve top performance when evaluated on in-distribution test points, they are vulnerable to unanticipated distribution shifts in test data. However, test-time adaptation of video action recognition models against common distribution shifts has so far not been demonstrated. We propose to address this problem with an approach tailored to spatio-temporal models that is capable of adaptation on a single video sample at a step. It consists in a feature distribution alignment technique that aligns online estimates of test set statistics towards the training statistics. We further enforce prediction consistency over temporally augmented views of the same test video sample. Evaluations on three benchmark action recognition datasets show that our proposed technique is architecture-agnostic and able to significantly boost the performance on both, the state of the art convolutional architecture TANet and the Video Swin Transformer. Our proposed method demonstrates a substantial performance gain over existing test-time adaptation approaches in both evaluations of a single distribution shift and the challenging case of random distribution shifts. Code will be available at \url{https://github.com/wlin-at/ViTTA}.

Keyless entry systems in cars are adopting neural networks for localizing its operators. Using test-time adversarial defences equip such systems with the ability to defend against adversarial attacks without prior training on adversarial samples. We propose a test-time adversarial example detector which detects the input adversarial example through quantifying the localized intermediate responses of a pre-trained neural network and confidence scores of an auxiliary softmax layer. Furthermore, in order to make the network robust, we extenuate the non-relevant features by non-iterative input sample clipping. Using our approach, mean performance over 15 levels of adversarial perturbations is increased by 55.33% for the fast gradient sign method (FGSM) and 6.3% for both the basic iterative method (BIM) and the projected gradient method (PGD).

Large language models (LLMs) have been shown to be able to perform new tasks based on a few demonstrations or natural language instructions. While these capabilities have led to widespread adoption, most LLMs are developed by resource-rich organizations and are frequently kept from the public. As a step towards democratizing this powerful technology, we present BLOOM, a 176B-parameter open-access language model designed and built thanks to a collaboration of hundreds of researchers. BLOOM is a decoder-only Transformer language model that was trained on the ROOTS corpus, a dataset comprising hundreds of sources in 46 natural and 13 programming languages (59 in total). We find that BLOOM achieves competitive performance on a wide variety of benchmarks, with stronger results after undergoing multitask prompted finetuning. To facilitate future research and applications using LLMs, we publicly release our models and code under the Responsible AI License.

当今智能城市中产生的大型视频数据从其有目的的用法角度引起了人们的关注，其中监视摄像机等是最突出的资源，是为大量数据做出贡献的最突出的资源，使其自动化分析成为计算方面的艰巨任务。和精确。暴力检测（VD）在行动和活动识别域中广泛崩溃，用于分析大型视频数据，以了解由于人类而引起的异常动作。传统上，VD文献基于手动设计的功能，尽管开发了基于深度学习的独立模型的进步用于实时VD分析。本文重点介绍了深度序列学习方法以及检测到的暴力的本地化策略。该概述还介入了基于机器学习的初始图像处理和基于机器学习的文献及其可能具有的优势，例如针对当前复杂模型的效率。此外，讨论了数据集，以提供当前模型的分析，并用对先前方法的深入分析得出的VD域中的未来方向解释了他们的利弊。

由于计算机视觉的最新进展，流量视频数据已成为限制交通拥堵状况的关键因素。这项工作为使用颜色编码方案提供了一种独特的技术，用于在深度卷积神经网络中训练流量数据之前。首先，将视频数据转换为图像数据集。然后，使用您只看一次算法进行车辆检测。已经采用了颜色编码的方案将图像数据集转换为二进制图像数据集。这些二进制图像被馈送到深度卷积神经网络中。使用UCSD数据集，我们获得了98.2％的分类精度。

光学相干断层扫描（OCT）是一种非侵入性技术，可在微米分辨率中捕获视网膜的横截面区域。它已被广泛用作辅助成像参考，以检测与眼睛有关的病理学并预测疾病特征的纵向进展。视网膜层分割是至关重要的特征提取技术之一，其中视网膜层厚度的变化和由于液体的存在而引起的视网膜层变形高度相关，与多种流行性眼部疾病（如糖尿病性视网膜病）和年龄相关的黄斑疾病高度相关。变性（AMD）。但是，这些图像是从具有不同强度分布或换句话说的不同设备中获取的，属于不同的成像域。本文提出了一种分割引导的域适应方法，以将来自多个设备的图像调整为单个图像域，其中可用的最先进的预训练模型可用。它避免了即将推出的新数据集的手动标签的时间消耗以及现有网络的重新培训。网络的语义一致性和全球特征一致性将最大程度地减少许多研究人员报告的幻觉效果，这些效应对周期矛盾的生成对抗网络（Cyclegan）体系结构。

知识图，例如Wikidata，包括结构和文本知识，以表示知识。对于图形嵌入和语言模型的两种方式中的每种方法都可以学习预测新型结构知识的模式。很少有方法与模式结合学习和推断，而这些现有的方法只能部分利用结构和文本知识的相互作用。在我们的方法中，我们以单个方式的现有强烈表示为基础，并使用超复杂代数来表示（i），（i），单模式嵌入以及（ii），不同方式之间的相互作用及其互补的知识表示手段。更具体地说，我们建议4D超复合数的二脑和四个元素表示，以整合四个模态，即结构知识图形嵌入，单词级表示（例如\ word2vec，fastText，fastText），句子级表示（句子transformer）和文档级表示（句子级别）（句子级别）（句子级表示）（句子变压器，doc2vec）。我们的统一矢量表示通过汉密尔顿和二脑产物进行标记的边缘的合理性，从而对不同模态之间的成对相互作用进行建模。对标准基准数据集的广泛实验评估显示了我们两个新模型的优越性，除了稀疏的结构知识外，还可以提高链接预测任务中的性能。

肺部以外的视野（FOV）组织截断在常规的肺筛查计算机断层扫描（CT）中很常见。这对机会性CT的身体组成（BC）评估构成了局限性，因为缺少关键的解剖结构。传统上，扩展CT的FOV被认为是使用有限数据的CT重建问题。但是，这种方法依赖于应用程序中可能无法使用的投影域数据。在这项工作中，我们从语义图像扩展角度提出问题，该角度仅需要图像数据作为输入。提出的两阶段方法根据完整体的估计范围识别新的FOV边框，并在截短区域中渗出了缺失的组织。使用在FOV中具有完整主体的CT切片对训练样品进行模拟，从而使模型开发自制。我们使用有限FOV的肺筛选CT评估了所提出的方法在自动BC评估中的有效性。提出的方法有效地恢复了缺失的组织并减少了FOV组织截断引入的BC评估误差。在大规模肺部筛查CT数据集的BC评估中，这种校正既可以提高受试者内的一致性和与人体测量近似值的相关性。已开发的方法可在https://github.com/masilab/s-efov上获得。