多视图聚类已进行了广泛的研究，以利用多源信息来提高聚类性能。通常，大多数现有作品通常通过某些相似性/距离指标（例如欧几里得距离）或学习的表示形式来计算N * n亲和力图，并探索跨视图的成对相关性。但是不幸的是，通常需要二次甚至立方复杂性，这使得在聚集largescale数据集方面遇到了困难。最近，通过选择具有K-均值的视图锚表演或通过对原始观测值进行直接矩阵分解来捕获多个视图中的数据分布。尽管取得了巨大的成功，但很少有人考虑了视图不足问题，因此隐含地认为，每个单独的观点都足以恢复群集结构。此外，无法同时发现潜在积分空间以及来自多个视图的共享群集结构。鉴于这一点，我们为快速多视图聚类（AIMC）提出了一个具有几乎线性复杂性的快速多视图聚类（AIMC）。具体而言，视图生成模型旨在重建来自潜在积分空间的视图观测值，并具有不同的适应性贡献。同时，具有正交性约束和群集分区的质心表示无缝构造以近似潜在的积分空间。开发了一种替代最小化算法来解决优化问题，事实证明，该问题具有线性时间复杂性W.R.T.样本量。与最新方法相比，在几个Realworld数据集上进行的广泛实验证实了所提出的AIMC方法的优越性。

深度聚类最近引起了极大的关注。尽管取得了显着的进展，但以前的大多数深度聚类作品仍有两个局限性。首先，其中许多集中在某些基于分布的聚类损失上，缺乏通过对比度学习来利用样本（或增强）关系的能力。其次，他们经常忽略了间接样本结构信息，从而忽略了多尺度邻里结构学习的丰富可能性。鉴于这一点，本文提出了一种新的深聚类方法，称为图像聚类，其中包括对比度学习和多尺度图卷积网络（IcicleGCN），该网络（ICICELGCN）也弥合了卷积神经网络（CNN）和图形卷积网络（GCN）之间的差距。作为对比度学习与图像聚类任务的多尺度邻域结构学习之间的差距。所提出的IcicleGCN框架由四个主要模块组成，即基于CNN的主链，实例相似性模块（ISM），关节群集结构学习和实例重建模块（JC-SLIM）和多尺度GCN模块（M -GCN）。具体而言，在每个图像上执行了两个随机增强，使用两个重量共享视图的骨干网络用于学习增强样品的表示形式，然后将其馈送到ISM和JC-SLIM以进行实例级别和集群级别的对比度分别学习。此外，为了实施多尺度的邻域结构学习，通过（i）通过（i）层次融合的层相互作用和（ii）共同自适应学习确保他们的最后一层，同时对两个GCN和自动编码器进行了同时培训。层输出分布保持一致。多个图像数据集上的实验证明了IcicleGCN优于最先进的群集性能。

Vision Transformer（VIT）表明了其比卷积神经网络（CNN）的优势，其能够捕获全球远程依赖性以进行视觉表示学习。除了VIT，对比度学习是最近的另一个流行研究主题。尽管以前的对比学习作品主要基于CNN，但一些最新的研究试图共同对VIT进行建模和对比度学习，以增强自我监督的学习。尽管取得了很大的进步，但这些VIT和对比学习的组合主要集中在实例级对比度上，这些对比度通常忽略了全球聚类结构的对比度，并且缺乏直接学习聚类结果（例如图像）的能力。鉴于这一点，本文提出了一种端到端的深层图像聚类方法，称为对比群（VTCC）的视觉变压器（VTCC），据我们所知，该方法首次统一了变压器和对比度学习的对比度学习。图像聚类任务。具体而言，在微型批次中，在每个图像上执行了两个随机增强，我们利用具有两个重量分担视图的VIT编码器作为学习增强样品的表示形式。为了纠正VIT的潜在不稳定，我们结合了一个卷积茎，该卷积茎使用多个堆叠的小卷积而不是斑块投影层中的大卷积，将每个增强样品分为一系列斑块。通过通过主干学到的表示形式，实例投影仪和群集投影仪将进一步用于实例级对比度学习和全球聚类结构学习。在八个图像数据集上进行的广泛实验证明了VTCC的稳定性（在训练中）和优越性（在聚类性能中）比最先进的。

由于其通过深层神经网络的共同表示学习和聚类的能力，近年来，深层聚类引起了人们的关注。在其最新发展中，对比度学习已成为一种有效的技术，可实质性地提高深度聚类的性能。但是，现有的基于学习的基于对比的深层聚类算法主要集中于一些精心设计的增强（通常具有有限的转换以保留结构），被称为薄弱的增强，但不能超越弱化的增强，以探索更多的机会（随着更具侵略性的转变甚至严重的扭曲）。在本文中，我们提出了一种被称为强烈增强的对比聚类（SACC）的端到端深群集方法，该方法将传统的两夸大视图范式扩展到多种视图，并共同利用强大而弱的增强，以增强深层聚类。特别是，我们利用具有三重共享权重的骨干网络，在该网络中，强烈的增强视图和两个弱化的视图均融合在一起。基于主链产生的表示，弱进行弱化的视图对和强力视图对同时被利用用于实例级的对比度学习（通过实例投影仪）和群集级的对比度学习（通过群集投影仪），与主链一起可以以纯监督的方式共同优化。五个具有挑战性的图像数据集的实验结果表明，我们的SACC方法优于最先进的方法。该代码可在https://github.com/dengxiaozhi/sacc上找到。

With the fast development of big data, it has been easier than before to learn the optimal decision rule by updating the decision rule recursively and making online decisions. We study the online statistical inference of model parameters in a contextual bandit framework of sequential decision-making. We propose a general framework for online and adaptive data collection environment that can update decision rules via weighted stochastic gradient descent. We allow different weighting schemes of the stochastic gradient and establish the asymptotic normality of the parameter estimator. Our proposed estimator significantly improves the asymptotic efficiency over the previous averaged SGD approach via inverse probability weights. We also conduct an optimality analysis on the weights in a linear regression setting. We provide a Bahadur representation of the proposed estimator and show that the remainder term in the Bahadur representation entails a slower convergence rate compared to classical SGD due to the adaptive data collection.

Model counting is a fundamental problem which has been influential in many applications, from artificial intelligence to formal verification. Due to the intrinsic hardness of model counting, approximate techniques have been developed to solve real-world instances of model counting. This paper designs a new anytime approach called PartialKC for approximate model counting. The idea is a form of partial knowledge compilation to provide an unbiased estimate of the model count which can converge to the exact count. Our empirical analysis demonstrates that PartialKC achieves significant scalability and accuracy over prior state-of-the-art approximate counters, including satss and STS. Interestingly, the empirical results show that PartialKC reaches convergence for many instances and therefore provides exact model counting performance comparable to state-of-the-art exact counters.

Robots are traditionally bounded by a fixed embodiment during their operational lifetime, which limits their ability to adapt to their surroundings. Co-optimizing control and morphology of a robot, however, is often inefficient due to the complex interplay between the controller and morphology. In this paper, we propose a learning-based control method that can inherently take morphology into consideration such that once the control policy is trained in the simulator, it can be easily deployed to robots with different embodiments in the real world. In particular, we present the Embodiment-aware Transformer (EAT), an architecture that casts this control problem as conditional sequence modeling. EAT outputs the optimal actions by leveraging a causally masked Transformer. By conditioning an autoregressive model on the desired robot embodiment, past states, and actions, our EAT model can generate future actions that best fit the current robot embodiment. Experimental results show that EAT can outperform all other alternatives in embodiment-varying tasks, and succeed in an example of real-world evolution tasks: stepping down a stair through updating the morphology alone. We hope that EAT will inspire a new push toward real-world evolution across many domains, where algorithms like EAT can blaze a trail by bridging the field of evolutionary robotics and big data sequence modeling.

Persuasion modeling is a key building block for conversational agents. Existing works in this direction are limited to analyzing textual dialogue corpus. We argue that visual signals also play an important role in understanding human persuasive behaviors. In this paper, we introduce the first multimodal dataset for modeling persuasion behaviors. Our dataset includes 199 dialogue transcriptions and videos captured in a multi-player social deduction game setting, 26,647 utterance level annotations of persuasion strategy, and game level annotations of deduction game outcomes. We provide extensive experiments to show how dialogue context and visual signals benefit persuasion strategy prediction. We also explore the generalization ability of language models for persuasion modeling and the role of persuasion strategies in predicting social deduction game outcomes. Our dataset, code, and models can be found at https://persuasion-deductiongame.socialai-data.org.

Deep reinforcement learning has recently emerged as an appealing alternative for legged locomotion over multiple terrains by training a policy in physical simulation and then transferring it to the real world (i.e., sim-to-real transfer). Despite considerable progress, the capacity and scalability of traditional neural networks are still limited, which may hinder their applications in more complex environments. In contrast, the Transformer architecture has shown its superiority in a wide range of large-scale sequence modeling tasks, including natural language processing and decision-making problems. In this paper, we propose Terrain Transformer (TERT), a high-capacity Transformer model for quadrupedal locomotion control on various terrains. Furthermore, to better leverage Transformer in sim-to-real scenarios, we present a novel two-stage training framework consisting of an offline pretraining stage and an online correction stage, which can naturally integrate Transformer with privileged training. Extensive experiments in simulation demonstrate that TERT outperforms state-of-the-art baselines on different terrains in terms of return, energy consumption and control smoothness. In further real-world validation, TERT successfully traverses nine challenging terrains, including sand pit and stair down, which can not be accomplished by strong baselines.

Graphene quantum dots provide a platform for manipulating electron behaviors in two-dimensional (2D) Dirac materials. Most previous works were of the "forward" type in that the objective was to solve various confinement, transport and scattering problems with given structures that can be generated by, e.g., applying an external electrical field. There are applications such as cloaking or superscattering where the challenging problem of inverse design needs to be solved: finding a quantum-dot structure according to certain desired functional characteristics. A brute-force search of the system configuration based directly on the solutions of the Dirac equation is computational infeasible. We articulate a machine-learning approach to addressing the inverse-design problem where artificial neural networks subject to physical constraints are exploited to replace the rigorous Dirac equation solver. In particular, we focus on the problem of designing a quantum dot structure to generate both cloaking and superscattering in terms of the scattering efficiency as a function of the energy. We construct a physical loss function that enables accurate prediction of the scattering characteristics. We demonstrate that, in the regime of Klein tunneling, the scattering efficiency can be designed to vary over two orders of magnitudes, allowing any scattering curve to be generated from a proper combination of the gate potentials. Our physics-based machine-learning approach can be a powerful design tool for 2D Dirac material-based electronics.