在这项研究中,我们提出了一种基于词素的方案,用于韩国依赖解析,并采用拟议方案来普遍依赖。我们介绍了语言原理,该基本原理说明了采用基于词素的格式的动机和必要性,并开发了脚本,这些脚本会在通用依赖项使用的原始格式和所提出的基于词素的格式自动之间转换。然后,统计和神经模型(包括udpipe和stanza)证明了提出的格式对韩国依赖解析的有效性,并以我们精心构造的基于词素的单词嵌入韩语。Morphud的表现优于所有韩国UD Treebanks的解析结果,我们还提供了详细的错误分析。
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我们介绍韩语了解评估(KLUE)基准。 Klue是8个韩国自然语言理解(nlu)任务的集合,包括主题分类,语言典的相似性,自然语言推断,命名实体识别,关系提取,依赖解析,机器阅读理解和对话状态跟踪。我们从各种源语料库中展开的所有任务,同时尊重版权,以确保任何没有任何限制的人的可访问性。考虑到道德考虑,我们仔细设计了注释协议。随着基准任务和数据,我们为每个任务提供适用的评估指标和微调配方,为每项任务进行预训练语言模型。我们还释放了预用的语言模型(PLM),Klue-Bert和Klue-Roberta,以帮助在KLUE上再现基线模型,从而促进未来的研究。我们通过拟议的Klue基准套件从初步实验中进行了一些有趣的观察,已经证明了这款新的基准套件的有用性。首先,我们找到了klue-roberta-mantring的其他基线,包括多语种plms和现有的开源韩国plms。其次,即使我们从预先预测语料库中取代个人身份信息,我们也会看到性能下降最小,这表明隐私和NLU能力并不彼此可能。最后,我们发现,使用BPE标记与语素级预象的组合,在涉及语素级标记,检测和发电的任务中是有效的。除了加速韩国人NLP研究外,我们的创建Klue的全面文件将有助于将来为其他语言创建类似的资源。 klue在https://klue-benchmark.com上提供。
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随着智能车辆和先进驾驶员援助系统(ADAS)的快速发展,新趋势是人类驾驶员的混合水平将参与运输系统。因此,在这种情况下,司机的必要视觉指导对于防止潜在风险至关重要。为了推进视觉指导系统的发展,我们介绍了一种新的视觉云数据融合方法,从云中集成相机图像和数字双胞胎信息,帮助智能车辆做出更好的决策。绘制目标车辆边界框并在物体检测器的帮助下(在EGO车辆上运行)和位置信息(从云接收)匹配。使用深度图像作为附加特征源获得最佳匹配结果,从工会阈值下面的0.7交叉口下的精度为79.2%。进行了对车道改变预测的案例研究,以表明所提出的数据融合方法的有效性。在案例研究中,提出了一种多层的Perceptron算法,用修改的车道改变预测方法提出。从Unity游戏发动机获得的人型仿真结果表明,在安全性,舒适度和环境可持续性方面,拟议的模型可以显着提高高速公路驾驶性能。
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In robotics and computer vision communities, extensive studies have been widely conducted regarding surveillance tasks, including human detection, tracking, and motion recognition with a camera. Additionally, deep learning algorithms are widely utilized in the aforementioned tasks as in other computer vision tasks. Existing public datasets are insufficient to develop learning-based methods that handle various surveillance for outdoor and extreme situations such as harsh weather and low illuminance conditions. Therefore, we introduce a new large-scale outdoor surveillance dataset named eXtremely large-scale Multi-modAl Sensor dataset (X-MAS) containing more than 500,000 image pairs and the first-person view data annotated by well-trained annotators. Moreover, a single pair contains multi-modal data (e.g. an IR image, an RGB image, a thermal image, a depth image, and a LiDAR scan). This is the first large-scale first-person view outdoor multi-modal dataset focusing on surveillance tasks to the best of our knowledge. We present an overview of the proposed dataset with statistics and present methods of exploiting our dataset with deep learning-based algorithms. The latest information on the dataset and our study are available at https://github.com/lge-robot-navi, and the dataset will be available for download through a server.
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The Coronavirus disease 2019 (COVID-19) was first identified in Wuhan, China, in early December 2019 and now becoming a pandemic. When COVID-19 patients undergo radiography examination, radiologists can observe the present of radiographic abnormalities from their chest X-ray (CXR) images. In this study, a deep convolutional neural network (CNN) model was proposed to aid radiologists in diagnosing COVID-19 patients. First, this work conducted a comparative study on the performance of modified VGG-16, ResNet-50 and DenseNet-121 to classify CXR images into normal, COVID-19 and viral pneumonia. Then, the impact of image augmentation on the classification results was evaluated. The publicly available COVID-19 Radiography Database was used throughout this study. After comparison, ResNet-50 achieved the highest accuracy with 95.88%. Next, after training ResNet-50 with rotation, translation, horizontal flip, intensity shift and zoom augmented dataset, the accuracy dropped to 80.95%. Furthermore, an ablation study on the effect of image augmentation on the classification results found that the combinations of rotation and intensity shift augmentation methods obtained an accuracy higher than baseline, which is 96.14%. Finally, ResNet-50 with rotation and intensity shift augmentations performed the best and was proposed as the final classification model in this work. These findings demonstrated that the proposed classification model can provide a promising result for COVID-19 diagnosis.
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Feature acquisition algorithms address the problem of acquiring informative features while balancing the costs of acquisition to improve the learning performances of ML models. Previous approaches have focused on calculating the expected utility values of features to determine the acquisition sequences. Other approaches formulated the problem as a Markov Decision Process (MDP) and applied reinforcement learning based algorithms. In comparison to previous approaches, we focus on 1) formulating the feature acquisition problem as a MDP and applying Monte Carlo Tree Search, 2) calculating the intermediary rewards for each acquisition step based on model improvements and acquisition costs and 3) simultaneously optimizing model improvement and acquisition costs with multi-objective Monte Carlo Tree Search. With Proximal Policy Optimization and Deep Q-Network algorithms as benchmark, we show the effectiveness of our proposed approach with experimental study.
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Uniform-precision neural network quantization has gained popularity since it simplifies densely packed arithmetic unit for high computing capability. However, it ignores heterogeneous sensitivity to the impact of quantization errors across the layers, resulting in sub-optimal inference accuracy. This work proposes a novel neural architecture search called neural channel expansion that adjusts the network structure to alleviate accuracy degradation from ultra-low uniform-precision quantization. The proposed method selectively expands channels for the quantization sensitive layers while satisfying hardware constraints (e.g., FLOPs, PARAMs). Based on in-depth analysis and experiments, we demonstrate that the proposed method can adapt several popular networks channels to achieve superior 2-bit quantization accuracy on CIFAR10 and ImageNet. In particular, we achieve the best-to-date Top-1/Top-5 accuracy for 2-bit ResNet50 with smaller FLOPs and the parameter size.
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This study introduces and examines the potential of an AI system to generate health awareness messages. The topic of folic acid, a vitamin that is critical during pregnancy, served as a test case. Using prompt engineering, we generated messages that could be used to raise awareness and compared them to retweeted human-generated messages via computational and human evaluation methods. The system was easy to use and prolific, and computational analyses revealed that the AI-generated messages were on par with human-generated ones in terms of sentiment, reading ease, and semantic content. Also, the human evaluation study showed that AI-generated messages ranked higher in message quality and clarity. We discuss the theoretical, practical, and ethical implications of these results.
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We propose an approach for semantic imitation, which uses demonstrations from a source domain, e.g. human videos, to accelerate reinforcement learning (RL) in a different target domain, e.g. a robotic manipulator in a simulated kitchen. Instead of imitating low-level actions like joint velocities, our approach imitates the sequence of demonstrated semantic skills like "opening the microwave" or "turning on the stove". This allows us to transfer demonstrations across environments (e.g. real-world to simulated kitchen) and agent embodiments (e.g. bimanual human demonstration to robotic arm). We evaluate on three challenging cross-domain learning problems and match the performance of demonstration-accelerated RL approaches that require in-domain demonstrations. In a simulated kitchen environment, our approach learns long-horizon robot manipulation tasks, using less than 3 minutes of human video demonstrations from a real-world kitchen. This enables scaling robot learning via the reuse of demonstrations, e.g. collected as human videos, for learning in any number of target domains.
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Although massive pre-trained vision-language models like CLIP show impressive generalization capabilities for many tasks, still it often remains necessary to fine-tune them for improved performance on specific datasets. When doing so, it is desirable that updating the model is fast and that the model does not lose its capabilities on data outside of the dataset, as is often the case with classical fine-tuning approaches. In this work we suggest a lightweight adapter, that only updates the models predictions close to seen datapoints. We demonstrate the effectiveness and speed of this relatively simple approach in the context of few-shot learning, where our results both on classes seen and unseen during training are comparable with or improve on the state of the art.
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