在多种方案中，多幕科建议专门为用户检索相关项目，这在工业推荐系统中无处不在。这些方案享有用户和项目中的一部分重叠，而不同方案的分布则不同。多阶段建模的关键点是有效地最大程度地利用全幕纳罗来信息，并在多种情况下为用户和项目生成适应性表示。我们总结了三个实用挑战，这些挑战无法很好地解决多幕科建模：（1）在多种情况下缺乏细粒度和脱钩的信息传输控制。 （2）整个空间样品的开发不足。 （3）项目的多幕科代表性分解问题。在本文中，我们提出了一种情景自适应和自我监督（SASS）模型，以解决上述三个挑战。具体而言，我们使用场景自适应门单元设计了多层场景自适应转移（ML-SAT）模块，以相当细粒度且脱钩的方式选择并融合从整个场景到单个场景的有效传输信息。为了充分利用整个空间样品的功能，引入了包括预训练和微调在内的两阶段训练过程。预训练阶段是基于场景监督的对比学习任务，并从标记和未标记的数据空间中绘制的培训样本。该模型是在用户端和项目方面对称创建的，因此我们可以在不同情况下获得项目的区分表示。公共和工业数据集的广泛实验结果证明了SASS模型比最先进的方法的优越性。该模型还可以在在线A/B测试中平均每位用户的观看时间提高8.0％以上。

逃生马鞍点是非渗透优化中的中央研究主题。在本文中，我们提出了一种简单的基于梯度的算法，使得对于平滑函数$ f \ colon \ mathbb {r} ^ n \ to \ mathbb {r} $，它输出$ \ epsilon $-uppatione二阶$ \ tilde {o}（\ log n / \ epsilon ^ {1.75}）$迭代。与先前的jin等人的最先进的算法相比。使用$ \ tilde {o}（（\ log n）^ {4} / \ epsilon ^ {2}）$或$ \ tilde {o}（（\ log n）^ {6} / \ epsilon ^ {1.75} ）$迭代，我们的算法在$ \ log n $方面多项式更好，并在$ 1 / \ epsilon $方面与他们的复杂性匹配。对于随机设置，我们的算法输出$ \ epsilon $ - $ \ tilde {o}（（\ log n）^ {2} / \ epsilon ^ {4}）$迭代。从技术上讲，我们的主要贡献是仅使用仅使用梯度实施强大的Hessian电源方法，该方法可以在马鞍点附近找到负曲率，并在$ \ log n $中实现多项式加速度与扰动的梯度下降方法相比。最后，我们还执行支持我们的结果的数值实验。

This work addresses the problems of (a) designing utilization measurements of trained artificial intelligence (AI) models and (b) explaining how training data are encoded in AI models based on those measurements. The problems are motivated by the lack of explainability of AI models in security and safety critical applications, such as the use of AI models for classification of traffic signs in self-driving cars. We approach the problems by introducing theoretical underpinnings of AI model utilization measurement and understanding patterns in utilization-based class encodings of traffic signs at the level of computation graphs (AI models), subgraphs, and graph nodes. Conceptually, utilization is defined at each graph node (computation unit) of an AI model based on the number and distribution of unique outputs in the space of all possible outputs (tensor-states). In this work, utilization measurements are extracted from AI models, which include poisoned and clean AI models. In contrast to clean AI models, the poisoned AI models were trained with traffic sign images containing systematic, physically realizable, traffic sign modifications (i.e., triggers) to change a correct class label to another label in a presence of such a trigger. We analyze class encodings of such clean and poisoned AI models, and conclude with implications for trojan injection and detection.

点对特征（PPF）广泛用于6D姿势估计。在本文中，我们提出了一种基于PPF框架的有效的6D姿势估计方法。我们介绍了一个目标良好的下采样策略，该策略更多地集中在边缘区域，以有效地提取复杂的几何形状。提出了一种姿势假设验证方法来通过计算边缘匹配度来解决对称歧义。我们对两个具有挑战性的数据集和一个现实世界中收集的数据集进行评估，这证明了我们方法对姿势估计几何复杂，遮挡，对称对象的优越性。我们通过将其应用于模拟穿刺来进一步验证我们的方法。

脑电图（EEG）录音通常被伪影污染。已经开发了各种方法来消除或削弱伪影的影响。然而，大多数人都依赖于先前的分析经验。在这里，我们提出了一个深入的学习框架，以将神经信号和伪像在嵌入空间中分离并重建被称为DeepSeparator的去噪信号。 DeepSeparator采用编码器来提取和放大原始EEG中的特征，称为分解器的模块以提取趋势，检测和抑制伪像和解码器以重建去噪信号。此外，DeepSeparator可以提取伪像，这在很大程度上增加了模型解释性。通过半合成的EEG数据集和实际任务相关的EEG数据集进行了所提出的方法，建议DeepSepater在EoG和EMG伪像去除中占据了传统模型。 DeepSeparator可以扩展到多通道EEG和任何长度的数据。它可能激励深入学习的EEG去噪的未来发展和应用。 DeepSeparator的代码可在https://github.com/ncclabsustech/deepseparator上获得。

Masked image modeling (MIM) performs strongly in pre-training large vision Transformers (ViTs). However, small models that are critical for real-world applications cannot or only marginally benefit from this pre-training approach. In this paper, we explore distillation techniques to transfer the success of large MIM-based pre-trained models to smaller ones. We systematically study different options in the distillation framework, including distilling targets, losses, input, network regularization, sequential distillation, etc, revealing that: 1) Distilling token relations is more effective than CLS token- and feature-based distillation; 2) An intermediate layer of the teacher network as target perform better than that using the last layer when the depth of the student mismatches that of the teacher; 3) Weak regularization is preferred; etc. With these findings, we achieve significant fine-tuning accuracy improvements over the scratch MIM pre-training on ImageNet-1K classification, using all the ViT-Tiny, ViT-Small, and ViT-base models, with +4.2%/+2.4%/+1.4% gains, respectively. Our TinyMIM model of base size achieves 52.2 mIoU in AE20K semantic segmentation, which is +4.1 higher than the MAE baseline. Our TinyMIM model of tiny size achieves 79.6% top-1 accuracy on ImageNet-1K image classification, which sets a new record for small vision models of the same size and computation budget. This strong performance suggests an alternative way for developing small vision Transformer models, that is, by exploring better training methods rather than introducing inductive biases into architectures as in most previous works. Code is available at https://github.com/OliverRensu/TinyMIM.

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.

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.

Blind image quality assessment (BIQA) remains challenging due to the diversity of distortion and image content variation, which complicate the distortion patterns crossing different scales and aggravate the difficulty of the regression problem for BIQA. However, existing BIQA methods often fail to consider multi-scale distortion patterns and image content, and little research has been done on learning strategies to make the regression model produce better performance. In this paper, we propose a simple yet effective Progressive Multi-Task Image Quality Assessment (PMT-IQA) model, which contains a multi-scale feature extraction module (MS) and a progressive multi-task learning module (PMT), to help the model learn complex distortion patterns and better optimize the regression issue to align with the law of human learning process from easy to hard. To verify the effectiveness of the proposed PMT-IQA model, we conduct experiments on four widely used public datasets, and the experimental results indicate that the performance of PMT-IQA is superior to the comparison approaches, and both MS and PMT modules improve the model's performance.

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.