Headline generation is a task of generating an appropriate headline for a given article, which can be further used for machine-aided writing or enhancing the click-through ratio. Current works only use the article itself in the generation, but have not taken the writing style of headlines into consideration. In this paper, we propose a novel Seq2Seq model called CLH3G (Contrastive Learning enhanced Historical Headlines based Headline Generation) which can use the historical headlines of the articles that the author wrote in the past to improve the headline generation of current articles. By taking historical headlines into account, we can integrate the stylistic features of the author into our model, and generate a headline not only appropriate for the article, but also consistent with the author's style. In order to efficiently learn the stylistic features of the author, we further introduce a contrastive learning based auxiliary task for the encoder of our model. Besides, we propose two methods to use the learned stylistic features to guide both the pointer and the decoder during the generation. Experimental results show that historical headlines of the same user can improve the headline generation significantly, and both the contrastive learning module and the two style features fusion methods can further boost the performance.
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后门攻击已成为深度神经网络(DNN)的主要安全威胁。虽然现有的防御方法在检测或擦除后以后展示了有希望的结果,但仍然尚不清楚是否可以设计强大的培训方法,以防止后门触发器首先注入训练的模型。在本文中,我们介绍了\ emph {反后门学习}的概念,旨在培训\ emph {Clean}模型给出了后门中毒数据。我们将整体学习过程框架作为学习\ emph {clean}和\ emph {backdoor}部分的双重任务。从这种观点来看,我们确定了两个后门攻击的固有特征,因为他们的弱点2)后门任务与特定类(后门目标类)相关联。根据这两个弱点,我们提出了一般学习计划,反后门学习(ABL),在培训期间自动防止后门攻击。 ABL引入了标准培训的两级\ EMPH {梯度上升}机制,帮助分离早期训练阶段的后台示例,2)在后续训练阶段中断后门示例和目标类之间的相关性。通过对多个基准数据集的广泛实验,针对10个最先进的攻击,我们经验证明,后卫中毒数据上的ABL培训模型实现了与纯净清洁数据训练的相同性能。代码可用于\ url {https:/github.com/boylyg/abl}。
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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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多模式性荧光脱氧葡萄糖(FDG)正电子发射断层扫描 /计算机断层扫描(PET / CT)已常规用于评估常见癌症,例如肺癌,淋巴瘤和黑色素瘤。这主要归因于以下事实:PET/CT结合了对PET肿瘤检测的高灵敏度和CT的解剖学信息。在PET/CT图像评估中,自动肿瘤分割是重要的一步,近年来,基于深度学习的方法已成为最新方法。不幸的是,现有的方法倾向于过度细分肿瘤区域,并包括正常摄取器官,炎症和其他感染等区域。在这项研究中,我们引入了一个假阳性还原网络以克服这一限制。我们首先引入了一个自制的预训练的全球分割模块,以使用自我监督的预训练的编码器粗糙地描绘候选肿瘤区域。然后,通过局部细化模块去除假阳性来完善候选肿瘤区域。我们对MICCAI 2022自动病变分割的实验在全身FDG-PET/CT(AUTOPET)挑战数据集中表明,我们的方法在初步测试数据中获得了0.9324的骰子得分,并在排行榜上排名第一。我们的方法在最终测试数据的前7位方法中也排名,最终排名将在2022 MICCAI AUTOPET研讨会期间宣布。我们的代码可在以下网址提供:https://github.com/yigepeng/autopet_false_posisity_reduction。
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有效处理3D数据一直是一个挑战。大规模点云上的空间操作以稀疏数据存储,需要额外的成本。由于变形金刚的成功吸引,研究人员正在使用多头关注视力任务。但是,变压器中的注意力计算在输入数量和点云等集合的空间直觉中具有二次复杂性。我们重新设计了这项工作中的“变压器”,并将它们纳入形状分类以及部分和场景细分的层次结构框架中。我们建议我们的当地注意力单元,该单元捕获了空间社区的特征。我们还通过利用每次迭代的采样和分组来计算有效且动态的全局交叉注意。最后,为了减轻点云的非异质性,我们提出了一个有效的多尺度令牌化(MST),该标记(MST)提取了尺度不变的令牌以供注意操作。所提出的分层模型以平均准确性实现最新的形状分类,并以先前的分割方法的相同,同时需要更少的计算。我们提出的体系结构预测分割标签的标签约为以前最有效方法的延迟和参数计数的一半,具有可比的性能。该代码可从https://github.com/yigewang-whu/cloudattention获得。
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Language model pre-training has proven to be useful in learning universal language representations. As a state-of-the-art language model pre-training model, BERT (Bidirectional Encoder Representations from Transformers) has achieved amazing results in many language understanding tasks. In this paper, we conduct exhaustive experiments to investigate different fine-tuning methods of BERT on text classification task and provide a general solution for BERT fine-tuning. Finally, the proposed solution obtains new state-of-the-art results on eight widely-studied text classification datasets. 1
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In this paper, we propose a robust 3D detector, named Cross Modal Transformer (CMT), for end-to-end 3D multi-modal detection. Without explicit view transformation, CMT takes the image and point clouds tokens as inputs and directly outputs accurate 3D bounding boxes. The spatial alignment of multi-modal tokens is performed implicitly, by encoding the 3D points into multi-modal features. The core design of CMT is quite simple while its performance is impressive. CMT obtains 73.0% NDS on nuScenes benchmark. Moreover, CMT has a strong robustness even if the LiDAR is missing. Code will be released at https://github.com/junjie18/CMT.
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Dataset distillation has emerged as a prominent technique to improve data efficiency when training machine learning models. It encapsulates the knowledge from a large dataset into a smaller synthetic dataset. A model trained on this smaller distilled dataset can attain comparable performance to a model trained on the original training dataset. However, the existing dataset distillation techniques mainly aim at achieving the best trade-off between resource usage efficiency and model utility. The security risks stemming from them have not been explored. This study performs the first backdoor attack against the models trained on the data distilled by dataset distillation models in the image domain. Concretely, we inject triggers into the synthetic data during the distillation procedure rather than during the model training stage, where all previous attacks are performed. We propose two types of backdoor attacks, namely NAIVEATTACK and DOORPING. NAIVEATTACK simply adds triggers to the raw data at the initial distillation phase, while DOORPING iteratively updates the triggers during the entire distillation procedure. We conduct extensive evaluations on multiple datasets, architectures, and dataset distillation techniques. Empirical evaluation shows that NAIVEATTACK achieves decent attack success rate (ASR) scores in some cases, while DOORPING reaches higher ASR scores (close to 1.0) in all cases. Furthermore, we conduct a comprehensive ablation study to analyze the factors that may affect the attack performance. Finally, we evaluate multiple defense mechanisms against our backdoor attacks and show that our attacks can practically circumvent these defense mechanisms.
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Automatic music generation with artificial intelligence typically requires a large amount of data which is hard to obtain for many less common genres and musical instruments. To tackle this issue, we present ongoing work and preliminary findings on the possibility for deep models to transfer knowledge from language to music, by finetuning large language models pre-trained on a massive text corpus on only hundreds of MIDI files of drum performances. We show that by doing so, one of the largest, state-of-the-art models (GPT3) is capable of generating reasonable drum grooves, while models that are not pre-trained (Transformer) shows no such ability beyond naive repetition. Evaluating generated music is a challenging task, more so is evaluating drum grooves with little precedence in literature. Hence, we propose a tailored structural evaluation method and analyze drum grooves produced by GPT3 compared to those played by human professionals, exposing the strengths and weaknesses of such generation by language-to-music transfer. Our findings suggest that language-to-music transfer learning with large language models is viable and promising.
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Few Shot Instance Segmentation (FSIS) requires models to detect and segment novel classes with limited several support examples. In this work, we explore a simple yet unified solution for FSIS as well as its incremental variants, and introduce a new framework named Reference Twice (RefT) to fully explore the relationship between support/query features based on a Transformer-like framework. Our key insights are two folds: Firstly, with the aid of support masks, we can generate dynamic class centers more appropriately to re-weight query features. Secondly, we find that support object queries have already encoded key factors after base training. In this way, the query features can be enhanced twice from two aspects, i.e., feature-level and instance-level. In particular, we firstly design a mask-based dynamic weighting module to enhance support features and then propose to link object queries for better calibration via cross-attention. After the above steps, the novel classes can be improved significantly over our strong baseline. Additionally, our new framework can be easily extended to incremental FSIS with minor modification. When benchmarking results on the COCO dataset for FSIS, gFSIS, and iFSIS settings, our method achieves a competitive performance compared to existing approaches across different shots, e.g., we boost nAP by noticeable +8.2/+9.4 over the current state-of-the-art FSIS method for 10/30-shot. We further demonstrate the superiority of our approach on Few Shot Object Detection. Code and model will be available.
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