本文介绍了我们参与多语言首字母缩写提取共享任务SDU@AAAI-22的发现。该任务包括从科学和法律领域内6种语言中的文档提取的首字母缩写。为了解决多语言的首字母缩写提取,我们使用了Bilstm-CRF使用多语言XLM-Roberta嵌入。我们在共享任务语料库上鉴定了XLM-Roberta模型,以进一步将XLM-Roberta嵌入到共享的任务域。我们的系统(团队:SMR-NLP)在所有语言中都实现了首字母缩写提取的竞争性能。
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数据增强是自然语言处理(NLP)模型的鲁棒性评估的重要组成部分,以及增强他们培训的数据的多样性。在本文中,我们呈现NL-Cogmenter,这是一种新的参与式Python的自然语言增强框架,它支持创建两个转换(对数据的修改)和过滤器(根据特定功能的数据拆分)。我们描述了框架和初始的117个变换和23个过滤器,用于各种自然语言任务。我们通过使用其几个转换来分析流行自然语言模型的鲁棒性来证明NL-Upmenter的功效。基础架构,Datacards和稳健性分析结果在NL-Augmenter存储库上公开可用(\ url {https://github.com/gem-benchmark/nl-augmenter})。
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Driving through pothole infested roads is a life hazard and economically costly. The experience is even worse for motorists using the pothole filled road for the first time. Pothole-filled road networks have been associated with severe traffic jam especially during peak times of the day. Besides not being fuel consumption friendly and being time wasting, traffic jams often lead to increased carbon emissions as well as noise pollution. Moreover, the risk of fatal accidents has also been strongly associated with potholes among other road network factors. Discovering potholes prior to using a particular road is therefore of significant importance. This work presents a successful demonstration of sensor-based pothole mapping agent that captures both the pothole's depth as well as its location coordinates, parameters that are then used to generate a pothole map for the agent's entire journey. The map can thus be shared with all motorists intending to use the same route.
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Accurate recognition of food items along with quality assessment is of paramount importance in the agricultural industry. Such automated systems can speed up the wheel of the food processing sector and save tons of manual labor. In this connection, the recent advancement of Deep learning-based architectures has introduced a wide variety of solutions offering remarkable performance in several classification tasks. In this work, we have exploited the concept of Densely Connected Convolutional Neural Networks (DenseNets) for fruit quality assessment. The feature propagation towards the deeper layers has enabled the network to tackle the vanishing gradient problems and ensured the reuse of features to learn meaningful insights. Evaluating on a dataset of 19,526 images containing six fruits having three quality grades for each, the proposed pipeline achieved a remarkable accuracy of 99.67%. The robustness of the model was further tested for fruit classification and quality assessment tasks where the model produced a similar performance, which makes it suitable for real-life applications.
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Generative models have been very successful over the years and have received significant attention for synthetic data generation. As deep learning models are getting more and more complex, they require large amounts of data to perform accurately. In medical image analysis, such generative models play a crucial role as the available data is limited due to challenges related to data privacy, lack of data diversity, or uneven data distributions. In this paper, we present a method to generate brain tumor MRI images using generative adversarial networks. We have utilized StyleGAN2 with ADA methodology to generate high-quality brain MRI with tumors while using a significantly smaller amount of training data when compared to the existing approaches. We use three pre-trained models for transfer learning. Results demonstrate that the proposed method can learn the distributions of brain tumors. Furthermore, the model can generate high-quality synthetic brain MRI with a tumor that can limit the small sample size issues. The approach can addresses the limited data availability by generating realistic-looking brain MRI with tumors. The code is available at: ~\url{https://github.com/rizwanqureshi123/Brain-Tumor-Synthetic-Data}.
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基于学习的MRI翻译涉及一个合成模型,该模型将源对比度映射到目标对比图像上。多机构合作是跨广泛数据集培训合​​成模型的关键,但是集中式培训涉及隐私风险。联合学习(FL)是一个协作框架,相反,采用分散培训,以避免共享成像数据并减轻隐私问题。但是,成像数据的分布中固有的异质性可能会损害训练的模型。一方面,即使对于具有固定源目标配置的常见翻译任务,图像分布的隐式变化也很明显。相反,当规定具有不同源目标配置的不同翻译任务时,在站点内和跨站点内会出现明确的变化。为了提高针对域转移的可靠性,我们在这里介绍了MRI合成的第一种个性化FL方法(PFLSYNTH)。 PFLSYNTH基于配备映射器的对抗模型,该映射器会产生特定于单个站点和源目标对比的潜伏期。它利用新颖的个性化阻滞了基于这些潜伏期的发电机跨发电机图的统计和加权。为了进一步促进位点特异性,在发电机的下游层上采用了部分模型聚集,而上游层则保留在本地。因此,PFLSYNTH可以培训统一的合成模型,该模型可以可靠地跨越多个站点和翻译任务。在多站点数据集上进行的全面实验清楚地证明了PFLSHNTH在多对比度MRI合成中对先前联合方法的增强性能。
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人工智能(AI)和机器学习(ML)的最新表现突破,尤其是深度学习的进步(DL),功能强大,易于使用的ML库(例如Scikit-Learn,Tensorflow,Pytorch。),Pytorch。,Pytorch。。核工程师对AI/ML的前所未有的兴趣,并增加了计算能力。对于基于物理学的计算模型,已经广泛研究了验证,验证和不确定性定量(VVUQ),并且已经开发了许多方法。但是,ML模型的VVUQ的研究相对较少,尤其是在核工程中。在这项工作中,我们专注于ML模型的UQ作为ML VVUQ的初步步骤,更具体地说,是Deep Neural Networks(DNNS),因为它们是用于回归和分类任务的最广泛使用的监督ML算法。这项工作旨在量化DNN的预测或近似不确定性,当它们用作昂贵的物理模型的替代模型时。比较了DNN UQ的三种技术,即Monte Carlo辍学(MCD),深层合奏(DE)和贝叶斯神经网络(BNNS)。两个核工程示例用于基准这些方法,(1)使用野牛代码的时间依赖性裂变气体释放数据,以及(2)基于BFBT基准测试的无效分数模拟使用痕量代码。发现这三种方法通常需要不同的DNN体系结构和超参数来优化其性能。 UQ结果还取决于可用培训数据的量和数据的性质。总体而言,所有这三种方法都可以提供对近似不确定性的合理估计。当平均预测接近测试数据时,不确定性通常较小,而BNN方法通常会产生比MCD和DE更大的不确定性。
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对于准确的模型,需要更少的数据,很少有射击学习表现出许多应用程序域中的鲁棒性和通用性。但是,在不信任的环境中部署少量模型可能会引起隐私问题,例如攻击或对手可能会违反用户提供的数据的隐私。本文通过建立一种新颖的隐私保存嵌入空间来维护数据的隐私空间,从而在不信任的环境中研究了少量学习的隐私增强,从而保留了数据的隐私并保持模型的准确性。我们研究了各种图像隐私方法的影响,例如模糊,像素化,高斯噪声和差异化私有像素化(DP-PIX)对几个图像分类的影响,并提出了一种通过关节损失学习隐私表示表示的方法。经验结果表明,如何为隐私增强的少数学习而谈判如何进行隐私性折衷。
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人类活动识别(Har)是一个正在进行的研究主题。它具有医疗支持,体育,健身,社交网络,人机界面,高级护理,娱乐,监控以及列表的应用。传统上,电脑视觉方法用于Har,它具有许多问题,例如保密或隐私,环境因素的影响,流动性,更高的运行成本,闭塞等。最近出现了使用传感器,尤其是惯性传感器的新趋势。使用传感器数据作为传统计算机视觉算法的替代方案存在若干优点。在文献中记录了计算机视觉算法的许多局限,包括利用传感器数据的深度神经网络(DNN)和机器学习(ML)方法的研究。我们使用智能手机的惯性传感器数据检查并分析了人类活动识别的不同机器学习和深度学习方法。为了确定哪种方法最适合此应用。
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未来几年物联网设备计数的预期增加促使有效算法的开发,可以帮助其有效管理,同时保持功耗低。在本文中,我们提出了一种智能多通道资源分配算法,用于Loradrl的密集Lora网络,并提供详细的性能评估。我们的结果表明,所提出的算法不仅显着提高了Lorawan的分组传递比(PDR),而且还能够支持移动终端设备(EDS),同时确保较低的功耗,因此增加了网络的寿命和容量。}大多数之前作品侧重于提出改进网络容量的不同MAC协议,即Lorawan,传输前的延迟等。我们展示通过使用Loradrl,我们可以通过Aloha \ TextColor {Black}与Lorasim相比,我们可以实现相同的效率LORA-MAB在将复杂性从EDS移动到网关的同时,因此使EDS更简单和更便宜。此外,我们在大规模的频率干扰攻击下测试Loradrl的性能,并显示其对环境变化的适应性。我们表明,与基于学习的技术相比,Loradrl的输出改善了最先进的技术的性能,从而提高了PR的500多种\%。
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