在恶劣天气下降雪场景的图像恢复是一项艰巨的任务。雪图像具有复杂的降解，并在干净的图像上混乱，改变了干净的图像的分布。以前基于CNN的方法由于缺乏特定的全球建模能力，因此在恢复雪场景中完全恢复了雪场的挑战。在本文中，我们将视觉变压器应用于从单个图像中去除积雪的任务。具体而言，我们建议沿通道拆分的并行网络体系结构分别执行本地功能改进和全局信息建模。我们利用频道洗牌操作来结合其各自的优势以增强网络性能。其次，我们提出了MSP模块，该模块利用多规模的AVGPOOL来汇总不同大小的信息，并同时对多头自我注意力进行多尺度投影自我注意，以提高模型在不同规模下降下的表示能力。最后，我们设计了一个轻巧，简单的本地捕获模块，可以完善模型的本地捕获能力。在实验部分，我们进行了广泛的实验以证明我们方法的优越性。我们比较了三个雪场数据集上的先前清除方法。实验结果表明，我们的方法超过了更少的参数和计算的最新方法。在CSD测试数据集上，我们实现了1.99dB和SSIM 0.03的实质增长。在SRR和SNOW100K数据集上，与Transweather方法相比，我们还增加了2.47dB和1.62dB，在SSIM中提高了0.03。在视觉比较部分中，我们的MSP形式比现有方法获得了更好的视觉效果，证明了我们方法的可用性。

宫颈异常细胞检测是一项具有挑战性的任务，因为异常细胞和正常细胞之间的形态差异通常是微妙的。为了确定宫颈细胞是正常还是异常，细胞病理学家总是将周围细胞作为参考，并进行仔细比较以鉴定其异常。为了模仿这些临床行为，我们建议探索上下文关系，以提高宫颈异常细胞检测的性能。具体而言，利用细胞和细胞到全球图像之间的上下文关系，以增强每个感兴趣区域（ROI）建议的特征。因此，开发了两个模块，称为ROI关系注意模块（RRAM）和全球ROI注意模块（GRAM），还研究了它们的组合策略。我们通过使用特征金字塔网络（FPN）使用单头或双头更快的R-CNN来设置强基础，并将我们的RRAM和革兰氏集整合到它们中以验证提出的模块的有效性。由40,000个细胞学图像组成的大宫颈细胞检测数据集进行的实验表明，RRAM和GRAM的引入都比基线方法获得了更好的平均精度（AP）。此外，当级联RRAM和GRAM时，我们的方法优于最先进的方法（SOTA）方法。此外，我们还显示了提出的功能增强方案可以促进图像级别和涂片级别的分类。代码和训练有素的模型可在https://github.com/cviu-csu/cr4cacd上公开获得。

虽然可以通过对位渠道进行排序来有效地实现连续策略解码的极性代码，但以有效且可扩展的方式为连续策略列表（SCL）解码找到最佳的极性代码结构，但仍在等待研究。本文提出了一个基于图形神经网络（GNN）基于迭代消息通话（IMP）算法的强化算法，以解决SCL解码的极性代码构建问题。该算法仅在极地代码的生成器矩阵诱导的图的局部结构上运行。 IMP模型的大小独立于区块长度和代码速率，从而使其可扩展到具有长块长度的极性代码。此外，单个受过训练的IMP模型可以直接应用于广泛的目标区块长度，代码速率和渠道条件，并且可以生成相应的极性代码，而无需单独的训练。数值实验表明，IMP算法找到了极性代码构建体，这些构建体在环状划分 - 检查辅助辅助AD的SCL（CA-SCL）解码下显着优于经典构建体。与针对SCL/CA-SCL解码量身定制的其他基于学习的施工方法相比，IMP算法构建具有可比或较低帧错误率的极地代码，同时通过消除每个目标阻止长度的单独训练的需求，从而大大降低了训练的复杂性，代码速率和通道状况。

随着预先训练模型的巨大成功，Pretrain-Then-Finetune范式已被广泛采用下游任务，以获得源代码的理解。但是，与昂贵的培训从头开始培训，如何将预先训练的模型从划痕进行有效地调整到新任务的训练模型尚未完全探索。在本文中，我们提出了一种桥接预先训练的模型和与代码相关任务的方法。我们利用语义保留的转换来丰富下游数据分集，并帮助预先接受的模型学习语义特征不变于这些语义上等效的转换。此外，我们介绍课程学习以易于努力的方式组织转换的数据，以微调现有的预先训练的模型。我们将我们的方法应用于一系列预先训练的型号，它们在源代码理解的任务中显着优于最先进的模型，例如算法分类，代码克隆检测和代码搜索。我们的实验甚至表明，在没有重量训练的代码数据上，自然语言预先训练的模型罗伯塔微调我们的轻质方法可以优于或竞争现有的代码，在上述任务中进行微调，如Codebert和Codebert和GraphCodebert。这一发现表明，代码预训练模型中仍有很大的改进空间。

We propose a motion forecasting model that exploits a novel structured map representation as well as actor-map interactions. Instead of encoding vectorized maps as raster images, we construct a lane graph from raw map data to explicitly preserve the map structure. To capture the complex topology and long range dependencies of the lane graph, we propose LaneGCN which extends graph convolutions with multiple adjacency matrices and along-lane dilation. To capture the complex interactions between actors and maps, we exploit a fusion network consisting of four types of interactions, actor-to-lane, lane-to-lane, laneto-actor and actor-to-actor. Powered by LaneGCN and actor-map interactions, our model is able to predict accurate and realistic multi-modal trajectories. Our approach significantly outperforms the state-of-the-art on the large scale Argoverse motion forecasting benchmark.

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.

Interview has been regarded as one of the most crucial step for recruitment. To fully prepare for the interview with the recruiters, job seekers usually practice with mock interviews between each other. However, such a mock interview with peers is generally far away from the real interview experience: the mock interviewers are not guaranteed to be professional and are not likely to behave like a real interviewer. Due to the rapid growth of online recruitment in recent years, recruiters tend to have online interviews, which makes it possible to collect real interview data from real interviewers. In this paper, we propose a novel application named EZInterviewer, which aims to learn from the online interview data and provides mock interview services to the job seekers. The task is challenging in two ways: (1) the interview data are now available but still of low-resource; (2) to generate meaningful and relevant interview dialogs requires thorough understanding of both resumes and job descriptions. To address the low-resource challenge, EZInterviewer is trained on a very small set of interview dialogs. The key idea is to reduce the number of parameters that rely on interview dialogs by disentangling the knowledge selector and dialog generator so that most parameters can be trained with ungrounded dialogs as well as the resume data that are not low-resource. Evaluation results on a real-world job interview dialog dataset indicate that we achieve promising results to generate mock interviews. With the help of EZInterviewer, we hope to make mock interview practice become easier for job seekers.

According to the rapid development of drone technologies, drones are widely used in many applications including military domains. In this paper, a novel situation-aware DRL- based autonomous nonlinear drone mobility control algorithm in cyber-physical loitering munition applications. On the battlefield, the design of DRL-based autonomous control algorithm is not straightforward because real-world data gathering is generally not available. Therefore, the approach in this paper is that cyber-physical virtual environment is constructed with Unity environment. Based on the virtual cyber-physical battlefield scenarios, a DRL-based automated nonlinear drone mobility control algorithm can be designed, evaluated, and visualized. Moreover, many obstacles exist which is harmful for linear trajectory control in real-world battlefield scenarios. Thus, our proposed autonomous nonlinear drone mobility control algorithm utilizes situation-aware components those are implemented with a Raycast function in Unity virtual scenarios. Based on the gathered situation-aware information, the drone can autonomously and nonlinearly adjust its trajectory during flight. Therefore, this approach is obviously beneficial for avoiding obstacles in obstacle-deployed battlefields. Our visualization-based performance evaluation shows that the proposed algorithm is superior from the other linear mobility control algorithms.

General nonlinear sieve learnings are classes of nonlinear sieves that can approximate nonlinear functions of high dimensional variables much more flexibly than various linear sieves (or series). This paper considers general nonlinear sieve quasi-likelihood ratio (GN-QLR) based inference on expectation functionals of time series data, where the functionals of interest are based on some nonparametric function that satisfy conditional moment restrictions and are learned using multilayer neural networks. While the asymptotic normality of the estimated functionals depends on some unknown Riesz representer of the functional space, we show that the optimally weighted GN-QLR statistic is asymptotically Chi-square distributed, regardless whether the expectation functional is regular (root-$n$ estimable) or not. This holds when the data are weakly dependent beta-mixing condition. We apply our method to the off-policy evaluation in reinforcement learning, by formulating the Bellman equation into the conditional moment restriction framework, so that we can make inference about the state-specific value functional using the proposed GN-QLR method with time series data. In addition, estimating the averaged partial means and averaged partial derivatives of nonparametric instrumental variables and quantile IV models are also presented as leading examples. Finally, a Monte Carlo study shows the finite sample performance of the procedure

This paper presents a safety-critical locomotion control framework for quadrupedal robots. Our goal is to enable quadrupedal robots to safely navigate in cluttered environments. To tackle this, we introduce exponential Discrete Control Barrier Functions (exponential DCBFs) with duality-based obstacle avoidance constraints into a Nonlinear Model Predictive Control (NMPC) with Whole-Body Control (WBC) framework for quadrupedal locomotion control. This enables us to use polytopes to describe the shapes of the robot and obstacles for collision avoidance while doing locomotion control of quadrupedal robots. Compared to most prior work, especially using CBFs, that utilize spherical and conservative approximation for obstacle avoidance, this work demonstrates a quadrupedal robot autonomously and safely navigating through very tight spaces in the real world. (Our open-source code is available at github.com/HybridRobotics/quadruped_nmpc_dcbf_duality, and the video is available at youtu.be/p1gSQjwXm1Q.)