面部抗散热是防止生物识别识别应用中安全漏洞的关键。现有的基于软件和基于硬件的面部耐受性检测方法仅在受约束环境或指定数据集中有效。使用RGB和红外图像的深度学习方法需要大量的培训数据来进行新攻击。在本文中,我们通过自动学习真实面孔的物理特征与欺骗性攻击相比,在现实世界中提出了一种面部抗散热法。开发了一个计算框架,以使用卷积神经网络和SVM一起提取和分类唯一的面部特征。我们的实时偏振面抗促进剂(PAAS)检测方法使用具有优化的处理算法的芯片积分极化成像传感器。广泛的实验证明了PAAS技术在不受控制的室内和室外条件下通过学习33人的偏光脸部图像来抵抗不受控制的室内和室外条件的各种面部欺骗攻击的优势。释放了四个方向的偏振面图像数据集,以激发生物识别抗散热场中的未来应用。
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There is an increasing need to bring machine learning to a wide diversity of hardware devices. Current frameworks rely on vendor-specific operator libraries and optimize for a narrow range of server-class GPUs. Deploying workloads to new platforms -such as mobile phones, embedded devices, and accelerators (e.g., FPGAs, ASICs) -requires significant manual effort. We propose TVM, a compiler that exposes graph-level and operator-level optimizations to provide performance portability to deep learning workloads across diverse hardware back-ends. TVM solves optimization challenges specific to deep learning, such as high-level operator fusion, mapping to arbitrary hardware primitives, and memory latency hiding. It also automates optimization of low-level programs to hardware characteristics by employing a novel, learning-based cost modeling method for rapid exploration of code optimizations. Experimental results show that TVM delivers performance across hardware back-ends that are competitive with state-ofthe-art, hand-tuned libraries for low-power CPU, mobile GPU, and server-class GPUs. We also demonstrate TVM's ability to target new accelerator back-ends, such as the FPGA-based generic deep learning accelerator.The system is open sourced and in production use inside several major companies.
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Human speech can be characterized by different components, including semantic content, speaker identity and prosodic information. Significant progress has been made in disentangling representations for semantic content and speaker identity in Automatic Speech Recognition (ASR) and speaker verification tasks respectively. However, it is still an open challenging research question to extract prosodic information because of the intrinsic association of different attributes, such as timbre and rhythm, and because of the need for unsupervised training schemes to achieve robust large-scale and speaker-independent ASR. The aim of this paper is to address the disentanglement of emotional prosody from speech based on unsupervised reconstruction. Specifically, we identify, design, implement and integrate three crucial components in our proposed speech reconstruction model Prosody2Vec: (1) a unit encoder that transforms speech signals into discrete units for semantic content, (2) a pretrained speaker verification model to generate speaker identity embeddings, and (3) a trainable prosody encoder to learn prosody representations. We first pretrain the Prosody2Vec representations on unlabelled emotional speech corpora, then fine-tune the model on specific datasets to perform Speech Emotion Recognition (SER) and Emotional Voice Conversion (EVC) tasks. Both objective and subjective evaluations on the EVC task suggest that Prosody2Vec effectively captures general prosodic features that can be smoothly transferred to other emotional speech. In addition, our SER experiments on the IEMOCAP dataset reveal that the prosody features learned by Prosody2Vec are complementary and beneficial for the performance of widely used speech pretraining models and surpass the state-of-the-art methods when combining Prosody2Vec with HuBERT representations. Some audio samples can be found on our demo website.
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利用深度学习的水提取需要精确的像素级标签。然而,在像素级别标记高分辨率遥感图像非常困难。因此,我们研究如何利用点标签来提取水体并提出一种名为邻居特征聚合网络(NFANET)的新方法。与PixelLevel标签相比,Point标签更容易获得,但它们会失去许多信息。在本文中,我们利用了局部水体的相邻像素之间的相似性,并提出了邻居采样器来重塑遥感图像。然后,将采样的图像发送到网络以进行特征聚合。此外,我们使用改进的递归训练算法进一步提高提取精度,使水边界更加自然。此外,我们的方法利用相邻特征而不是全局或本地特征来学习更多代表性。实验结果表明,所提出的NFANET方法不仅优于其他研究的弱监管方法,而且还获得与最先进的结果相似。
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这项工作的目的是通过利用视频中的音频和视觉流的自然共同发生来研究语音重建(视频到音频)对语音重建(视频到音频)的影响。我们提出了Lipsound2,其包括编码器 - 解码器架构和位置感知注意机制,可直接将面部图像序列映射到熔化谱图,而无需任何人类注释。提出的Lipsound2模型首先在$ 2400H的$ 2400h多语言(例如英语和德语)视听数据(VoxceleB2)上进行预先培训。为了验证所提出的方法的概括性,我们将在与以前的方法相比,微调在域特定数据集(网格,TCD-Timit)上进行预先训练的模型,以实现对语音质量和可懂度的显着提高扬声器依赖和依赖的设置。除了英语外,我们还在CMLR数据集上进行中文语音重建,以验证对转移性的影响。最后,我们通过微调在预先训练的语音识别系统上产生生成的音频并在英语和中文基准数据集中实现最先进的性能来培训级联唇读(视频到文本)系统。
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遥感图像中的Pansharpening旨在通过融合具有平面(PAN)图像的低分辨率多光谱(LRMS)图像直接获取高分辨率多光谱(HRMS)图像。主要问题是如何将LRMS图像的丰富光谱信息与PAN图像的丰富空间信息有效地结合。最近,已经提出了基于深度学习的许多方法,以便泛歌舞团的任务。然而,这些方法通常具有两个主要缺点:1)需要HRMS进行监督学习; 2)简单地忽略了MS和PAN​​图像之间的潜在关系并直接融合它们。为了解决这些问题,我们提出了一种基于学习劣化过程的新型无监督网络,称为LDP-Net。设计用于分别用于学习相应的降级过程的重新阻挡块和灰色块。另外,提出了一种新的混合损失函数,以在不同分辨率下限制泛散形图像和平底锅和平移和LRMS图像之间的空间和光谱一致性。 WorldView2和WorldView3图像上的实验表明,我们所提出的LDP-Net可以在没有HRMS样本的帮助下有效地融合平移和LRMS图像,从而在定性视觉效果和定量度量方面实现了有希望的性能。
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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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Knowledge graphs (KG) have served as the key component of various natural language processing applications. Commonsense knowledge graphs (CKG) are a special type of KG, where entities and relations are composed of free-form text. However, previous works in KG completion and CKG completion suffer from long-tail relations and newly-added relations which do not have many know triples for training. In light of this, few-shot KG completion (FKGC), which requires the strengths of graph representation learning and few-shot learning, has been proposed to challenge the problem of limited annotated data. In this paper, we comprehensively survey previous attempts on such tasks in the form of a series of methods and applications. Specifically, we first introduce FKGC challenges, commonly used KGs, and CKGs. Then we systematically categorize and summarize existing works in terms of the type of KGs and the methods. Finally, we present applications of FKGC models on prediction tasks in different areas and share our thoughts on future research directions of FKGC.
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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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Graph Neural Networks (GNNs) have shown satisfying performance on various graph learning tasks. To achieve better fitting capability, most GNNs are with a large number of parameters, which makes these GNNs computationally expensive. Therefore, it is difficult to deploy them onto edge devices with scarce computational resources, e.g., mobile phones and wearable smart devices. Knowledge Distillation (KD) is a common solution to compress GNNs, where a light-weighted model (i.e., the student model) is encouraged to mimic the behavior of a computationally expensive GNN (i.e., the teacher GNN model). Nevertheless, most existing GNN-based KD methods lack fairness consideration. As a consequence, the student model usually inherits and even exaggerates the bias from the teacher GNN. To handle such a problem, we take initial steps towards fair knowledge distillation for GNNs. Specifically, we first formulate a novel problem of fair knowledge distillation for GNN-based teacher-student frameworks. Then we propose a principled framework named RELIANT to mitigate the bias exhibited by the student model. Notably, the design of RELIANT is decoupled from any specific teacher and student model structures, and thus can be easily adapted to various GNN-based KD frameworks. We perform extensive experiments on multiple real-world datasets, which corroborates that RELIANT achieves less biased GNN knowledge distillation while maintaining high prediction utility.
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