In recent years multi-label, multi-class video action recognition has gained significant popularity. While reasoning over temporally connected atomic actions is mundane for intelligent species, standard artificial neural networks (ANN) still struggle to classify them. In the real world, atomic actions often temporally connect to form more complex composite actions. The challenge lies in recognising composite action of varying durations while other distinct composite or atomic actions occur in the background. Drawing upon the success of relational networks, we propose methods that learn to reason over the semantic concept of objects and actions. We empirically show how ANNs benefit from pretraining, relational inductive biases and unordered set-based latent representations. In this paper we propose deep set conditioned I3D (SCI3D), a two stream relational network that employs latent representation of state and visual representation for reasoning over events and actions. They learn to reason about temporally connected actions in order to identify all of them in the video. The proposed method achieves an improvement of around 1.49% mAP in atomic action recognition and 17.57% mAP in composite action recognition, over a I3D-NL baseline, on the CATER dataset.

将用户搜索查询与广告商实时竞标相关的关键字匹配是赞助搜索中的一个至关重要问题。在文献中，已经探索了两种广泛的方法来解决此问题：（i）在共享空间中学习查询和出价关键字的密集检索（DR），以及（ii）自然语言生成（NLG） - 学会直接生成给定查询的投标关键字。在这项工作中，我们首先对这两种方法进行了实证研究，并表明它们提供了添加剂的补充优势。特别是，从NLG检索到的很大一部分的关键字尚未由DR和反之亦然。然后，我们证明有可能将这两种方法的优势有效地结合在一个模型中。具体而言，我们提出了心脏：一种新型的多任务融合框架，在该框架中，我们共同优化共享编码器以同时执行DR和非自动性NLG。通过对30多个跨越20多种语言的搜索查询进行的广泛实验，我们表明，与使用相同的GPU计算的基线方法相比，心脏检索高质量的出价关键字40.3％。我们还证明，在单个心脏模型上推断与在两种不同的DR和NLG基线模型上推断为2倍计算一样好。此外，我们表明，接受心脏目标训练的DR模型要比接受标准对比度损失功能的训练的模型要好得多。最后，我们表明我们的心目标可以用于除赞助搜索并实现显着绩效提高以外的短文本检索任务。

自我监督的表示学习的最新趋势集中在消除训练管道中的归纳偏见。但是，当可用数据有限时，归纳偏差在设置中可能很有用，或者提供对基础数据分布的更多见解。我们提出了空间注意（SPAN），该框架利用未标记的图像数据集中使用一致的空间和语义结构来指导视觉变压器的注意。 SPAN通过将注意力面罩从单独的变压器头正规化，以跟随语义区域的各个先验。这些先验可以从数据统计数据或域专家提供的单个标记样本中得出。我们研究了几种详细的现实情况，包括医学图像分析和视觉质量保证。我们发现，所产生的注意力面膜比从域 - 不合义预审进的掩码更容易解​​释。 SPAN可为肺和心脏分割产生58.7的地图改进。我们还发现，与结构域 - 不合稳定的预处理相比，我们的方法在将验证的模型转移到下游胸部疾病分类任务时会产生2.2个MAUC的改善。最后，我们表明，与域 - 不可屈服的预处理相比，跨越预处理会导致低数据表格中的下游分类性能更高。

在过去的几年中，保护NLP模型免受拼写错误的障碍是研究兴趣的对象。现有的补救措施通常会损害准确性，或者需要对每个新的攻击类别进行完整的模型重新训练。我们提出了一种新颖的方法，可以向基于变压器的NLP模型中的拼写错误增加弹性。可以实现这种鲁棒性，而无需重新训练原始的NLP模型，并且只有最小的语言丧失理解在没有拼写错误的输入上的性能。此外，我们提出了一种新的有效近似方法来产生对抗性拼写错误，这大大降低了评估模型对对抗性攻击的弹性所需的成本。

在这项工作中，我们专注于半监督学习的视频动作检测，该学习既利用标签和未标记的数据。我们提出了一种简单的基于端到端一致性的方法，该方法有效地利用了未标记的数据。视频动作检测需要，行动类预测以及动作的时空定位。因此，我们研究了两种类型的约束，分类一致性和时空的一致性。视频中主要背景和静态区域的存在使得利用时空的一致性进行动作检测使其具有挑战性。为了解决这个问题，我们提出了两个新颖的正规化约束，以实现时空的一致性。 1）时间相干性和2）梯度平滑度。这两个方面都利用视频中的动作的时间连续性，并且被发现有效利用未标记的视频进行动作检测。我们证明了所提出的方法对两个不同的动作检测基准数据集的有效性，即UCF101-24和JHMDB-21。此外，我们还展示了YouTube-VOS上提出的视频对象分割方法的有效性，该方法证明了其概括能力，与最近完全监督的方法相比，提出的方法仅在UCF101-24上仅使用20％的注释来实现竞争性能。在UCF101-24上，与监督方法相比，它分别在0.5 F-MAP和V-MAP时分别提高了 +8.9％和 +11％。

在本文中，我们讨论了用分层，细粒度标记标记不同类型的侵略和“上下文”的分层的多语言数据集的开发。这里，这里，这里由对话线程定义，其中发生特定的评论以及评论对先前注释执行的话语角色的“类型”。在此处讨论的初始数据集（并作为逗号@图标共享任务的一部分提供），包括四种语言的15,000名注释评论 - Meitei，Bangla，Hindi和印度英语 - 从各种社交媒体平台收集作为Youtube，Facebook，Twitter和电报。正如通常在社交媒体网站上，大量这些评论都是多语种的，主要是与英语混合的代码混合。本文给出了用于注释的标签的详细描述以及开发多标签的过程的过程，该方法可用于标记具有各种侵略和偏差的评论，包括性别偏见，宗教不宽容（称为标签中的公共偏见），类/种姓偏见和民族/种族偏见。我们还定义并讨论已用于标记通过评论执行的异常发挥作用的标记的标签，例如攻击，防御等。我们还对数据集的统计分析以及我们的基线实验的结果进行了发展使用DataSet开发的自动攻击识别系统。

在未来的6G蜂窝网络中，联合通信和传感协议将允许网络感知环境，为统一通信 - 感知基础设施的许多新应用打开门。然而，解释感测场景的稀疏无线电表示是具有挑战性的，这阻碍了这些紧急系统的潜力。我们建议将无线电和愿景结合起来自动学习仅具有最小的人为干预的无线电感测模式。我们希望建立一个可以为数百万无核数据点提供的无线电传感模型。为此，我们利用最近的自我监督学习的进步，制定了一种新的无标签无线电视觉共同学习方案，由此，Vision通过跨模型相互信息进行无线电。根据常见的线性分类基准，我们实施和评估我们的方案，并报告定性和定量性能指标。在我们的评估中，通过无线电 - 视觉自我监督学到的代表对于下游传感演示，并且在使用较少标记的数据时优于其完全监督的对应物。这表明自我监督的学习可能是未来可扩展无线电传感系统的重要推动因素。

We introduce Argoverse 2 (AV2) - a collection of three datasets for perception and forecasting research in the self-driving domain. The annotated Sensor Dataset contains 1,000 sequences of multimodal data, encompassing high-resolution imagery from seven ring cameras, and two stereo cameras in addition to lidar point clouds, and 6-DOF map-aligned pose. Sequences contain 3D cuboid annotations for 26 object categories, all of which are sufficiently-sampled to support training and evaluation of 3D perception models. The Lidar Dataset contains 20,000 sequences of unlabeled lidar point clouds and map-aligned pose. This dataset is the largest ever collection of lidar sensor data and supports self-supervised learning and the emerging task of point cloud forecasting. Finally, the Motion Forecasting Dataset contains 250,000 scenarios mined for interesting and challenging interactions between the autonomous vehicle and other actors in each local scene. Models are tasked with the prediction of future motion for "scored actors" in each scenario and are provided with track histories that capture object location, heading, velocity, and category. In all three datasets, each scenario contains its own HD Map with 3D lane and crosswalk geometry - sourced from data captured in six distinct cities. We believe these datasets will support new and existing machine learning research problems in ways that existing datasets do not. All datasets are released under the CC BY-NC-SA 4.0 license.

Object movement identification is one of the most researched problems in the field of computer vision. In this task, we try to classify a pixel as foreground or background. Even though numerous traditional machine learning and deep learning methods already exist for this problem, the two major issues with most of them are the need for large amounts of ground truth data and their inferior performance on unseen videos. Since every pixel of every frame has to be labeled, acquiring large amounts of data for these techniques gets rather expensive. Recently, Zhao et al. [1] proposed one of a kind Arithmetic Distribution Neural Network (ADNN) for universal background subtraction which utilizes probability information from the histogram of temporal pixels and achieves promising results. Building onto this work, we developed an intelligent video surveillance system that uses ADNN architecture for motion detection, trims the video with parts only containing motion, and performs anomaly detection on the trimmed video.

The machine translation mechanism translates texts automatically between different natural languages, and Neural Machine Translation (NMT) has gained attention for its rational context analysis and fluent translation accuracy. However, processing low-resource languages that lack relevant training attributes like supervised data is a current challenge for Natural Language Processing (NLP). We incorporated a technique known Active Learning with the NMT toolkit Joey NMT to reach sufficient accuracy and robust predictions of low-resource language translation. With active learning, a semi-supervised machine learning strategy, the training algorithm determines which unlabeled data would be the most beneficial for obtaining labels using selected query techniques. We implemented two model-driven acquisition functions for selecting the samples to be validated. This work uses transformer-based NMT systems; baseline model (BM), fully trained model (FTM) , active learning least confidence based model (ALLCM), and active learning margin sampling based model (ALMSM) when translating English to Hindi. The Bilingual Evaluation Understudy (BLEU) metric has been used to evaluate system results. The BLEU scores of BM, FTM, ALLCM and ALMSM systems are 16.26, 22.56 , 24.54, and 24.20, respectively. The findings in this paper demonstrate that active learning techniques helps the model to converge early and improve the overall quality of the translation system.