本文报道的研究通过应用计算机视觉技术将普通的垃圾桶转化为更聪明的垃圾箱。在传感器和执行器设备的支持下,垃圾桶可以自动对垃圾进行分类。特别是,垃圾箱上的摄像头拍摄垃圾的照片,然后进行中央处理单元分析,并决定将垃圾桶放入哪个垃圾箱中。我们的垃圾箱系统的准确性达到90%。此外,我们的模型已连接到Internet,以更新垃圾箱状态以进行进一步管理。开发了用于管理垃圾箱的移动应用程序。
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COVID-19大流行已经暴露了全球医疗服务的脆弱性,增加了开发新颖的工具来提供快速且具有成本效益的筛查和诊断的需求。临床报告表明,Covid-19感染可能导致心脏损伤,心电图(ECG)可以作为Covid-19的诊断生物标志物。这项研究旨在利用ECG信号自动检测COVID-19。我们提出了一种从ECG纸记录中提取ECG信号的新方法,然后将其送入一维卷积神经网络(1D-CNN)中,以学习和诊断疾病。为了评估数字信号的质量,标记了基于纸张的ECG图像中的R峰。之后,将从每个图像计算的RR间隔与相应数字化信号的RR间隔进行比较。 COVID-19 ECG图像数据集上的实验表明,提出的数字化方法能够正确捕获原始信号,平均绝对误差为28.11 ms。我们提出的1D-CNN模型在数字化的心电图信号上进行了训练,允许准确识别患有COVID-19和其他受试者的个体,分类精度为98.42%,95.63%和98.50%,用于分类COVID-19 vs.正常,与正常人分类, COVID-19与异常心跳和Covid-19和其他类别分别与其他阶级。此外,提出的方法还为多分类任务实现了高级的性能。我们的发现表明,经过数字化的心电图信号训练的深度学习系统可以作为诊断Covid-19的潜在工具。
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跨不同边缘设备(客户)局部数据的分布不均匀,导致模型训练缓慢,并降低了联合学习的准确性。幼稚的联合学习(FL)策略和大多数替代解决方案试图通过加权跨客户的深度学习模型来实现更多公平。这项工作介绍了在现实世界数据集中遇到的一种新颖的非IID类型,即集群键,其中客户组具有具有相似分布的本地数据,从而导致全局模型收敛到过度拟合的解决方案。为了处理非IID数据,尤其是群集串数据的数据,我们提出了FedDrl,这是一种新型的FL模型,它采用了深厚的强化学习来适应每个客户的影响因素(将用作聚合过程中的权重)。在一组联合数据集上进行了广泛的实验证实,拟议的FEDDR可以根据CIFAR-100数据集的平均平均为FedAvg和FedProx方法提高了有利的改进,例如,高达4.05%和2.17%。
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心血管疾病(CVD)是一组心脏和血管疾病,是对人类健康最严重的危险之一,此类患者的数量仍在增长。早期,准确的检测在成功治疗和干预中起着关键作用。心电图(ECG)是识别各种心血管异常的金标准。在临床实践和当前大多数研究中,主要使用标准的12铅ECG。但是,使用较少的铅可以使ECG更加普遍,因为可以通过便携式或可穿戴设备来方便地记录它。在这项研究中,我们开发了一种新颖的深度学习系统,以仅使用三个ECG铅来准确识别多个心血管异常。
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In this work, we propose a new approach that combines data from multiple sensors for reliable obstacle avoidance. The sensors include two depth cameras and a LiDAR arranged so that they can capture the whole 3D area in front of the robot and a 2D slide around it. To fuse the data from these sensors, we first use an external camera as a reference to combine data from two depth cameras. A projection technique is then introduced to convert the 3D point cloud data of the cameras to its 2D correspondence. An obstacle avoidance algorithm is then developed based on the dynamic window approach. A number of experiments have been conducted to evaluate our proposed approach. The results show that the robot can effectively avoid static and dynamic obstacles of different shapes and sizes in different environments.
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Out-of-distribution (OOD) generalisation aims to build a model that can well generalise its learnt knowledge from source domains to an unseen target domain. However, current image classification models often perform poorly in the OOD setting due to statistically spurious correlations learning from model training. From causality-based perspective, we formulate the data generation process in OOD image classification using a causal graph. On this graph, we show that prediction P(Y|X) of a label Y given an image X in statistical learning is formed by both causal effect P(Y|do(X)) and spurious effects caused by confounding features (e.g., background). Since the spurious features are domain-variant, the prediction P(Y|X) becomes unstable on unseen domains. In this paper, we propose to mitigate the spurious effect of confounders using front-door adjustment. In our method, the mediator variable is hypothesized as semantic features that are essential to determine a label for an image. Inspired by capability of style transfer in image generation, we interpret the combination of the mediator variable with different generated images in the front-door formula and propose novel algorithms to estimate it. Extensive experimental results on widely used benchmark datasets verify the effectiveness of our method.
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The introduction of high-quality image generation models, particularly the StyleGAN family, provides a powerful tool to synthesize and manipulate images. However, existing models are built upon high-quality (HQ) data as desired outputs, making them unfit for in-the-wild low-quality (LQ) images, which are common inputs for manipulation. In this work, we bridge this gap by proposing a novel GAN structure that allows for generating images with controllable quality. The network can synthesize various image degradation and restore the sharp image via a quality control code. Our proposed QC-StyleGAN can directly edit LQ images without altering their quality by applying GAN inversion and manipulation techniques. It also provides for free an image restoration solution that can handle various degradations, including noise, blur, compression artifacts, and their mixtures. Finally, we demonstrate numerous other applications such as image degradation synthesis, transfer, and interpolation.
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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.
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语义分割是开发医学图像诊断系统的重要任务。但是,构建注释的医疗数据集很昂贵。因此,在这种情况下,半监督方法很重要。在半监督学习中,标签的质量在模型性能中起着至关重要的作用。在这项工作中,我们提出了一种新的伪标签策略,可提高用于培训学生网络的伪标签的质量。我们遵循多阶段的半监督训练方法,该方法在标记的数据集上训练教师模型,然后使用训练有素的老师将伪标签渲染用于学生培训。通过这样做,伪标签将被更新,并且随着培训的进度更加精确。上一个和我们的方法之间的关键区别在于,我们在学生培训过程中更新教师模型。因此,在学生培训过程中,提高了伪标签的质量。我们还提出了一种简单但有效的策略,以使用动量模型来提高伪标签的质量 - 训练过程中原始模型的慢复制版本。通过应用动量模型与学生培训期间的重新渲染伪标签相结合,我们在五个数据集中平均达到了84.1%的骰子分数(即Kvarsir,CVC-ClinicdB,Etis-laribpolypdb,cvc-colondb,cvc-colondb,cvc-colondb和cvc-300)和CVC-300)只有20%的数据集用作标记数据。我们的结果超过了3%的共同实践,甚至在某些数据集中取得了完全监督的结果。我们的源代码和预培训模型可在https://github.com/sun-asterisk-research/online学习SSL上找到
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文本分类是具有各种有趣应用程序的典型自然语言处理或计算语言学任务。随着社交媒体平台上的用户数量的增加,数据加速促进了有关社交媒体文本分类(SMTC)或社交媒体文本挖掘的新兴研究。与英语相比,越南人是低资源语言之一,仍然没有集中精力并彻底利用。受胶水成功的启发,我们介绍了社交媒体文本分类评估(SMTCE)基准,作为各种SMTC任务的数据集和模型的集合。借助拟议的基准,我们实施和分析了各种基于BERT的模型(Mbert,XLM-R和Distilmbert)和基于单语的BERT模型(Phobert,Vibert,Vibert,Velectra和Vibert4news)的有效性SMTCE基准。单语模型优于多语言模型,并实现所有文本分类任务的最新结果。它提供了基于基准的多语言和单语言模型的客观评估,该模型将使越南语言中有关贝尔特兰的未来研究有利。
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