在本文中,我们将解决方案介绍给Muse-Humor的多模式情感挑战(MUSE)2022的邮件,库穆尔人子挑战的目标是发现幽默并从德国足球馆的视听录音中计算出AUC新闻发布会。它是针对教练表现出的幽默的注释。对于此子挑战,我们首先使用变压器模块和BilstM模块构建一个判别模型,然后提出一种混合融合策略,以使用每种模式的预测结果来提高模型的性能。我们的实验证明了我们提出的模型和混合融合策略对多模式融合的有效性,并且我们在测试集中提出的模型的AUC为0.8972。
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图表神经网络(GNNS)已广泛应用于推荐任务,并获得了非常吸引人的性能。然而,大多数基于GNN的推荐方法在实践中遭受数据稀疏问题。同时,预训练技术在减轻了各个领域(如自然语言处理(NLP)和计算机视觉(CV)等域中的数据稀疏而取得了巨大成功。因此,图形预培训具有扩大基于GNN的建议的数据稀疏的巨大潜力。但是,预先培训GNN,建议面临独特的挑战。例如,不同推荐任务中的用户项交互图具有不同的用户和项目集,并且它们通常存在不同的属性。因此,在NLP和CV中常用的成功机制将知识从预训练任务转移到下游任务,例如共享所学习的嵌入式或特征提取器,而不是直接适用于现有的基于GNN的推荐模型。为了解决这些挑战,我们精致地设计了一个自适应图形预训练框架,用于本地化协作滤波(适应)。它不需要传输用户/项目嵌入式,并且能够跨越不同图的共同知识和每个图形的唯一性。广泛的实验结果表明了适应的有效性和优越性。
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建议中的用户项交互可以自然地将其作为用户项二分钟图。鉴于图形表示学习中图形神经网络(GNN)的成功,已提出基于GNN的C方法来推进推荐系统。这些方法通常根据学习的用户和项目嵌入式提出建议。但是,我们发现它们不会在真实建议中表现出很常见的稀疏稀疏用户项目图。因此,在这项工作中,我们介绍了一种新颖的视角,以建立基于GNN的CF方法,了解建议的框架局部图协作滤波(LGCF)。 LGCF的一个关键优势在于它不需要为每个用户和项目学习嵌入,这在稀疏方案中具有挑战性。或者,LGCF旨在将有用的CF信息编码为本地化的图表并基于这些图形提出建议。关于各种数据集的广泛实验验证了LGCF的有效性,尤其是稀疏场景。此外,经验结果表明LGCF为基于嵌入的CF模型提供了互补信息,该模型可用于提高推荐性能。
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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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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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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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This paper focuses on designing efficient models with low parameters and FLOPs for dense predictions. Even though CNN-based lightweight methods have achieved stunning results after years of research, trading-off model accuracy and constrained resources still need further improvements. This work rethinks the essential unity of efficient Inverted Residual Block in MobileNetv2 and effective Transformer in ViT, inductively abstracting a general concept of Meta-Mobile Block, and we argue that the specific instantiation is very important to model performance though sharing the same framework. Motivated by this phenomenon, we deduce a simple yet efficient modern \textbf{I}nverted \textbf{R}esidual \textbf{M}obile \textbf{B}lock (iRMB) for mobile applications, which absorbs CNN-like efficiency to model short-distance dependency and Transformer-like dynamic modeling capability to learn long-distance interactions. Furthermore, we design a ResNet-like 4-phase \textbf{E}fficient \textbf{MO}del (EMO) based only on a series of iRMBs for dense applications. Massive experiments on ImageNet-1K, COCO2017, and ADE20K benchmarks demonstrate the superiority of our EMO over state-of-the-art methods, \eg, our EMO-1M/2M/5M achieve 71.5, 75.1, and 78.4 Top-1 that surpass \textbf{SoTA} CNN-/Transformer-based models, while trading-off the model accuracy and efficiency well.
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