只有在模型在大规模的多语言环境中培训的情况下，才有可能在无监督的机器翻译（UMT）上进行无监督的机器翻译（UMT），这意味着有能力的无监督翻译（例如尼泊尔或辛哈拉）的胜任的不受监督的翻译，例如尼泊尔或辛哈拉语。与高资源对应物混合。尽管如此，尽管高资源语言极大地帮助启动了目标低资源翻译任务，但它们之间的语言差异可能会阻碍他们的进一步改进。在这项工作中，我们提出了一个简单的完善程序，以将语言与预先训练的多语言UMT模型相关联，以仅关注目标低资源任务。我们的方法在完全无监督的翻译任务中实现了最新的尼泊尔，僧伽罗，古吉拉特语，拉脱维亚，爱沙尼亚和哈萨克的最新技术，分别为3.5、3.3、3.3、4.1、4.2、4.2和3.3。我们的代码库可从https://github.com/nxphi47/refine_unsup_multlingual_mt获得

近年来，人们对少量知识图（FKGC）的兴趣日益增加，该图表旨在推断出关于该关系的一些参考三元组，从而推断出不见了的查询三倍。现有FKGC方法的主要重点在于学习关系表示，可以反映查询和参考三元组共享的共同信息。为此，这些方法从头部和尾部实体的直接邻居中学习实体对表示，然后汇总参考实体对的表示。但是，只有从直接邻居那里学到的实体对代表可能具有较低的表现力，当参与实体稀疏直接邻居或与其他实体共享一个共同的当地社区。此外，仅仅对头部和尾部实体的语义信息进行建模不足以准确推断其关系信息，尤其是当它们具有多个关系时。为了解决这些问题，我们提出了一个特定于关系的上下文学习（RSCL）框架，该框架利用了三元组的图形上下文，以学习全球和本地关系特定的表示形式，以使其几乎没有相关关系。具体而言，我们首先提取每个三倍的图形上下文，这可以提供长期实体关系依赖性。为了编码提取的图形上下文，我们提出了一个分层注意网络，以捕获三元组的上下文信息并突出显示实体的有价值的本地邻里信息。最后，我们设计了一个混合注意聚合器，以评估全球和本地级别的查询三元组的可能性。两个公共数据集的实验结果表明，RSCL的表现优于最先进的FKGC方法。

汽车之后（CF）建模，模拟人类CF行为的重要组成部分，在过去几十年中吸引了越来越多的研究兴趣。本文通过提出一种新型生成混合CF模型推动了现有技术，这在表征动态人类CF行为方面实现了高精度，并且能够为任何特定的人观察甚至不观察到的驾驶风格产生现实的人类CF行为。具体地，通过使用时变参数设计和校准智能驱动程序模型（IDM）来确保精确捕获人CF行为的能力。后面的原因是这种时变参数可以表达驱动器间异质性，即不同驱动器的不同驱动方式，以及驱动器内异质性，即改变同一驱动器的驱动样式。通过应用基于神经过程（NP）的模型来实现产生任何给定观察样式的现实人类CF行为的能力。通过探索校准的时变IDM参数与NP中间变量之间的关系来支持推断出不观察到的驱动风格的CF行为的能力。为了展示我们提出的模型的有效性，我们进行了广泛的实验和比较，包括CF模型参数校准，CF行为预测和不同驾驶风格的轨迹模拟。

分布式培训已成为培训大型神经网络（NN）模型的普遍性和有效的方法，该模型加工大规模数据。然而，满足来自各种NN模型，多样化计算资源的要求以及在培训工作期间的动态变化是非常挑战的。在这项研究中，我们在系统的端到端视图中设计了我们的分布式训练框架，以提供不同场景的内置自适应能力，特别是对于工业应用和生产环境，通过完全考虑资源分配，模型分区，任务放置和分布式执行。基于统一的分布式图和统一群集对象，我们的自适应框架配备了全球成本模型和全局计划者，可以实现任意并行，资源感知的放置，多模式执行，容错和弹性分布式。训练。实验表明，我们的框架可以满足应用程序的多样性和资源的异质性满足各种要求和具有竞争力的性能。具有260亿参数的Ernie语言模型在数千个AI处理器上有效地培训，可扩展性较弱的91.7％。通过采用异质管道异步执行，从推荐系统的模型的吞吐量可以分别增加到2.1倍，仅增加了GPU和CPU培训的3.3倍。此外，容错和弹性分布式培训已成功应用于在线工业应用，这减少了长期培训工作的数量，增加了34.49％，并在全球调度效率增加了33.91％生产环境。

布模拟在计算机动画，服装设计和机器人辅助敷料中具有广泛的应用。这项工作提出了一个可区分的布模拟器，其附加梯度信息促进了与布相关的应用。我们可区分的模拟器扩展了基于投影动力学（PD）和干摩擦接触的最先进的布模拟器。我们从以前的工作中汲取灵感，提出了一种快速新颖的方法，用于通过干摩擦接触在基于PD的布模拟中得出梯度。此外，我们对富含接触的布模拟中梯度的实用性进行了全面的分析和评估。最后，我们证明了模拟器在许多下游应用中的功效，包括系统识别，辅助调味料的轨迹优化，闭环控制，逆设计和实际降低SIM转移。我们观察到通过使用我们的梯度信息来求解大多数这些应用程序获得的大幅加速。

We address the challenge of recovering an underlying scene geometry and colors from a sparse set of RGBD view observations. In this work, we present a new solution that sequentially generates novel RGBD views along a camera trajectory, and the scene geometry is simply the fusion result of these views. More specifically, we maintain an intermediate surface mesh used for rendering new RGBD views, which subsequently becomes complete by an inpainting network; each rendered RGBD view is later back-projected as a partial surface and is supplemented into the intermediate mesh. The use of intermediate mesh and camera projection helps solve the refractory problem of multi-view inconsistency. We practically implement the RGBD inpainting network as a versatile RGBD diffusion model, which is previously used for 2D generative modeling; we make a modification to its reverse diffusion process to enable our use. We evaluate our approach on the task of 3D scene synthesis from sparse RGBD inputs; extensive experiments on the ScanNet dataset demonstrate the superiority of our approach over existing ones. Project page: https://jblei.site/project-pages/rgbd-diffusion.html

Facial attractiveness prediction (FAP) aims to assess the facial attractiveness automatically based on human aesthetic perception. Previous methods using deep convolutional neural networks have boosted the performance, but their giant models lead to a deficiency in flexibility. Besides, most of them fail to take full advantage of the dataset. In this paper, we present a novel end-to-end FAP approach integrating dual label distribution and lightweight design. To make the best use of the dataset, the manual ratings, attractiveness score, and standard deviation are aggregated explicitly to construct a dual label distribution, including the attractiveness distribution and the rating distribution. Such distributions, as well as the attractiveness score, are optimized under a joint learning framework based on the label distribution learning (LDL) paradigm. As for the lightweight design, the data processing is simplified to minimum, and MobileNetV2 is selected as our backbone. Extensive experiments are conducted on two benchmark datasets, where our approach achieves promising results and succeeds in striking a balance between performance and efficiency. Ablation studies demonstrate that our delicately designed learning modules are indispensable and correlated. Additionally, the visualization indicates that our approach is capable of perceiving facial attractiveness and capturing attractive facial regions to facilitate semantic predictions.

Neural networks are susceptible to data inference attacks such as the membership inference attack, the adversarial model inversion attack and the attribute inference attack, where the attacker could infer useful information such as the membership, the reconstruction or the sensitive attributes of a data sample from the confidence scores predicted by the target classifier. In this paper, we propose a method, namely PURIFIER, to defend against membership inference attacks. It transforms the confidence score vectors predicted by the target classifier and makes purified confidence scores indistinguishable in individual shape, statistical distribution and prediction label between members and non-members. The experimental results show that PURIFIER helps defend membership inference attacks with high effectiveness and efficiency, outperforming previous defense methods, and also incurs negligible utility loss. Besides, our further experiments show that PURIFIER is also effective in defending adversarial model inversion attacks and attribute inference attacks. For example, the inversion error is raised about 4+ times on the Facescrub530 classifier, and the attribute inference accuracy drops significantly when PURIFIER is deployed in our experiment.

Deep 3D point cloud models are sensitive to adversarial attacks, which poses threats to safety-critical applications such as autonomous driving. Robust training and defend-by-denoise are typical strategies for defending adversarial perturbations, including adversarial training and statistical filtering, respectively. However, they either induce massive computational overhead or rely heavily upon specified noise priors, limiting generalized robustness against attacks of all kinds. This paper introduces a new defense mechanism based on denoising diffusion models that can adaptively remove diverse noises with a tailored intensity estimator. Specifically, we first estimate adversarial distortions by calculating the distance of the points to their neighborhood best-fit plane. Depending on the distortion degree, we choose specific diffusion time steps for the input point cloud and perform the forward diffusion to disrupt potential adversarial shifts. Then we conduct the reverse denoising process to restore the disrupted point cloud back to a clean distribution. This approach enables effective defense against adaptive attacks with varying noise budgets, achieving accentuated robustness of existing 3D deep recognition models.

Video captioning aims to generate natural language sentences that describe the given video accurately. Existing methods obtain favorable generation by exploring richer visual representations in encode phase or improving the decoding ability. However, the long-tailed problem hinders these attempts at low-frequency tokens, which rarely occur but carry critical semantics, playing a vital role in the detailed generation. In this paper, we introduce a novel Refined Semantic enhancement method towards Frequency Diffusion (RSFD), a captioning model that constantly perceives the linguistic representation of the infrequent tokens. Concretely, a Frequency-Aware Diffusion (FAD) module is proposed to comprehend the semantics of low-frequency tokens to break through generation limitations. In this way, the caption is refined by promoting the absorption of tokens with insufficient occurrence. Based on FAD, we design a Divergent Semantic Supervisor (DSS) module to compensate for the information loss of high-frequency tokens brought by the diffusion process, where the semantics of low-frequency tokens is further emphasized to alleviate the long-tailed problem. Extensive experiments indicate that RSFD outperforms the state-of-the-art methods on two benchmark datasets, i.e., MSR-VTT and MSVD, demonstrate that the enhancement of low-frequency tokens semantics can obtain a competitive generation effect. Code is available at https://github.com/lzp870/RSFD.