深度学习推荐模型(DLRM)是广泛的,占据了相当多的数据中心足迹,并每年增长超过1.5倍。使用模型尺寸很快在Tberytes范围内,利用存储类(SCM)的推理,可以降低功耗和成本。本文评估将内存层级扩展到DLRM的主要挑战,并提出了通过软件定义内存提高性能的不同技术。我们展示了基础技术,如NAND Flash和3DXP的差异化,并涉及现实世界场景,从而可以节省5%至29%。
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在这项工作中,我们提出了一种新颖的方法,用于对训练有素的神经网络学习。特别是,我们根据层的传输函数形成Bregman的差异,并通过合并平均向量并将主方向归一化,并构造原始Bregman PCA公式的扩展,并将主方向归一化,相对于围绕平均值的局部凸功能的几何形状。这种概括允许将学习的表示形式导出为具有非线性的固定层。作为知识蒸馏的应用,我们为学生网络的学习问题提出了预测教师表示的压缩系数,这些内容被作为输入到导入层的输入。我们的经验发现表明,与使用教师的倒数第二层表示和软标签相比,与典型的教师培训相比,我们的方法在网络之间传输信息更为有效。
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我们首次建议使用基于多个实例学习的无卷积变压器模型,称为多个实例神经图像变压器(Minit),以分类T1Weighted(T1W)MRIS。我们首先介绍了为神经图像采用的几种变压器模型。这些模型从输入体积提取非重叠的3D块,并对其线性投影进行多头自我注意。另一方面,Minit将输入MRI的每个非重叠的3D块视为其自己的实例,将其进一步分为非重叠的3D贴片,并在其上计算了多头自我注意力。作为概念验证,我们通过训练模型来评估模型的功效,以确定两个公共数据集的T1W-MRIS:青少年脑认知发展(ABCD)和青少年酒精和神经发展联盟(NCANDA)(NCANDA) 。博学的注意力图突出了有助于识别脑形态计量学性别差异的体素。该代码可在https://github.com/singlaayush/minit上找到。
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生命的起源被神秘笼罩着,几乎没有生存线索,被进化竞争所掩盖。先前的评论涉及自上而下和自下而上的合成生物学的互补方法,以增强我们对生活系统的理解。在这里,我们指出这些领域之间的协同作用,尤其是自下而上的合成生物学和生命研究起源之间。我们探讨了与拥挤的细胞,其新陈代谢以及生长和分裂周期以及如何开始合并这些努力的人造细胞隔室取得的最新进展。尽管当前生活的复杂性是其最引人注目的特征之一,但人生的基本特征都不需要它,而且它们从一开始就不太可能出现因此而变得复杂。当前的研究不是通过恢复一个真正的起源而恢复真正的起源,而是通过挑出一组基本组成部分可能产生的复杂性和进化而融合了最小生命的出现。
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Designing experiments often requires balancing between learning about the true treatment effects and earning from allocating more samples to the superior treatment. While optimal algorithms for the Multi-Armed Bandit Problem (MABP) provide allocation policies that optimally balance learning and earning, they tend to be computationally expensive. The Gittins Index (GI) is a solution to the MABP that can simultaneously attain optimality and computationally efficiency goals, and it has been recently used in experiments with Bernoulli and Gaussian rewards. For the first time, we present a modification of the GI rule that can be used in experiments with exponentially-distributed rewards. We report its performance in simulated 2- armed and 3-armed experiments. Compared to traditional non-adaptive designs, our novel GI modified design shows operating characteristics comparable in learning (e.g. statistical power) but substantially better in earning (e.g. direct benefits). This illustrates the potential that designs using a GI approach to allocate participants have to improve participant benefits, increase efficiencies, and reduce experimental costs in adaptive multi-armed experiments with exponential rewards.
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Modelling and forecasting real-life human behaviour using online social media is an active endeavour of interest in politics, government, academia, and industry. Since its creation in 2006, Twitter has been proposed as a potential laboratory that could be used to gauge and predict social behaviour. During the last decade, the user base of Twitter has been growing and becoming more representative of the general population. Here we analyse this user base in the context of the 2021 Mexican Legislative Election. To do so, we use a dataset of 15 million election-related tweets in the six months preceding election day. We explore different election models that assign political preference to either the ruling parties or the opposition. We find that models using data with geographical attributes determine the results of the election with better precision and accuracy than conventional polling methods. These results demonstrate that analysis of public online data can outperform conventional polling methods, and that political analysis and general forecasting would likely benefit from incorporating such data in the immediate future. Moreover, the same Twitter dataset with geographical attributes is positively correlated with results from official census data on population and internet usage in Mexico. These findings suggest that we have reached a period in time when online activity, appropriately curated, can provide an accurate representation of offline behaviour.
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Existing federated classification algorithms typically assume the local annotations at every client cover the same set of classes. In this paper, we aim to lift such an assumption and focus on a more general yet practical non-IID setting where every client can work on non-identical and even disjoint sets of classes (i.e., client-exclusive classes), and the clients have a common goal which is to build a global classification model to identify the union of these classes. Such heterogeneity in client class sets poses a new challenge: how to ensure different clients are operating in the same latent space so as to avoid the drift after aggregation? We observe that the classes can be described in natural languages (i.e., class names) and these names are typically safe to share with all parties. Thus, we formulate the classification problem as a matching process between data representations and class representations and break the classification model into a data encoder and a label encoder. We leverage the natural-language class names as the common ground to anchor the class representations in the label encoder. In each iteration, the label encoder updates the class representations and regulates the data representations through matching. We further use the updated class representations at each round to annotate data samples for locally-unaware classes according to similarity and distill knowledge to local models. Extensive experiments on four real-world datasets show that the proposed method can outperform various classical and state-of-the-art federated learning methods designed for learning with non-IID data.
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This is paper for the smooth function approximation by neural networks (NN). Mathematical or physical functions can be replaced by NN models through regression. In this study, we get NNs that generate highly accurate and highly smooth function, which only comprised of a few weight parameters, through discussing a few topics about regression. First, we reinterpret inside of NNs for regression; consequently, we propose a new activation function--integrated sigmoid linear unit (ISLU). Then special charateristics of metadata for regression, which is different from other data like image or sound, is discussed for improving the performance of neural networks. Finally, the one of a simple hierarchical NN that generate models substituting mathematical function is presented, and the new batch concept ``meta-batch" which improves the performance of NN several times more is introduced. The new activation function, meta-batch method, features of numerical data, meta-augmentation with metaparameters, and a structure of NN generating a compact multi-layer perceptron(MLP) are essential in this study.
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The existing methods for video anomaly detection mostly utilize videos containing identifiable facial and appearance-based features. The use of videos with identifiable faces raises privacy concerns, especially when used in a hospital or community-based setting. Appearance-based features can also be sensitive to pixel-based noise, straining the anomaly detection methods to model the changes in the background and making it difficult to focus on the actions of humans in the foreground. Structural information in the form of skeletons describing the human motion in the videos is privacy-protecting and can overcome some of the problems posed by appearance-based features. In this paper, we present a survey of privacy-protecting deep learning anomaly detection methods using skeletons extracted from videos. We present a novel taxonomy of algorithms based on the various learning approaches. We conclude that skeleton-based approaches for anomaly detection can be a plausible privacy-protecting alternative for video anomaly detection. Lastly, we identify major open research questions and provide guidelines to address them.
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The Government of Kerala had increased the frequency of supply of free food kits owing to the pandemic, however, these items were static and not indicative of the personal preferences of the consumers. This paper conducts a comparative analysis of various clustering techniques on a scaled-down version of a real-world dataset obtained through a conjoint analysis-based survey. Clustering carried out by centroid-based methods such as k means is analyzed and the results are plotted along with SVD, and finally, a conclusion is reached as to which among the two is better. Once the clusters have been formulated, commodities are also decided upon for each cluster. Also, clustering is further enhanced by reassignment, based on a specific cluster loss threshold. Thus, the most efficacious clustering technique for designing a food kit tailored to the needs of individuals is finally obtained.
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