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ICAFS: Inter-Client-Aware Feature Selection for Vertical Federated Learning. 垂直联邦学习的客户端间感知特征选择。
Pub Date : 2025-12-23 DOI: 10.1109/tai.2025.3647596
Ruochen Jin, Boning Tong, Shu Yang, Bojian Hou, Li Shen

Vertical federated learning (VFL) enables a paradigm for vertically partitioned data across clients to collaboratively train machine learning models. Feature selection (FS) plays a crucial role in Vertical Federated Learning (VFL) due to the unique nature that data are distributed across multiple clients. In VFL, different clients possess distinct subsets of features for overlapping data samples, making the process of identifying and selecting the most relevant features a complex yet essential task. Previous FS efforts have primarily revolved around intra-client feature selection, overlooking vital feature interaction across clients, leading to subpar model outcomes. We introduce ICAFS, a novel multi-stage ensemble approach for effective FS in VFL by considering inter-client interactions. By employing conditional feature synthesis alongside multiple learnable feature selectors, ICAFS facilitates ensemble FS over these selectors using synthetic embeddings. This method bypasses the limitations of private gradient sharing and allows for model training using real data with refined embeddings. Experiments on multiple real-world datasets demonstrate that ICAFS surpasses current state-of-the-art methods in prediction accuracy.

垂直联邦学习(VFL)为跨客户机的垂直分区数据提供了一种范例,以协同训练机器学习模型。由于数据分布在多个客户机上的独特性,特征选择(FS)在垂直联邦学习(VFL)中起着至关重要的作用。在VFL中,不同的客户端对于重叠的数据样本具有不同的特征子集,这使得识别和选择最相关的特征成为一项复杂而重要的任务。以前的FS工作主要围绕客户端内部特征选择,忽略了客户端之间的重要特征交互,导致模型结果低于标准。我们介绍了一种新的多阶段集成方法ICAFS,该方法考虑了客户端间的相互作用,从而实现了VFL中有效的FS。通过使用条件特征合成和多个可学习的特征选择器,ICAFS使用合成嵌入在这些选择器上促进集成FS。该方法绕过了私有梯度共享的限制,并允许使用具有精细嵌入的真实数据进行模型训练。在多个真实世界数据集上的实验表明,ICAFS在预测精度方面超过了目前最先进的方法。
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引用次数: 0
2025 Index IEEE Transactions on Artificial Intelligence 2025索引IEEE人工智能学报
Pub Date : 2025-12-08 DOI: 10.1109/TAI.2025.3641262
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引用次数: 0
IEEE Transactions on Artificial Intelligence Publication Information IEEE人工智能学报
Pub Date : 2025-11-26 DOI: 10.1109/TAI.2025.3632311
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引用次数: 0
IEEE Transactions on Artificial Intelligence Publication Information IEEE人工智能学报
Pub Date : 2025-11-03 DOI: 10.1109/TAI.2025.3623487
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引用次数: 0
FCA-HLP: Multilayer Feature Cross-Activation Network With High- and Low-Level Prototypes for Few-Shot Segmentation FCA-HLP:基于高、低层次原型的多层特征交叉激活网络
Pub Date : 2025-09-09 DOI: 10.1109/TAI.2025.3607850
Jiaguang Li;Ying Wei;Zihan Gao;Yubo Wang
Few-shot segmentation strives to segment novel categories using merely a limited number of labeled images. Current prototype learning and correlation learning approaches struggle to effectively harness both high- and low-level information from support and query images, leading to suboptimal segmentation results. In this work, we propose a multilayer feature cross-activation (FCA) network with high- and low-level prototypes (HLP), which fully utilizes support and query information from both features and prototypes perspectives. Specifically, for the FCA module, we design a simple activation method that uses all the pixel-level support foreground features to activate query features, thereby obtaining activation maps without losing pixel-level detail information of support features. For the HLP module, we combine image-level prototypes with pixel-level prototypes to fully utilize high-level category information and low-level attribute information of support features. Besides, the prototype generation method integrates query information, which further enables the prototypes to better match target query features, especially when there are great differences between query and support images. Extensive experiments on PASCAL-$5^{i}$ and COCO-$20^{i}$ under 1-shot and 5-shot settings validate the effectiveness of our FCA-HLP. Our method establishes new state-of-the-art performance. Additionally, we analyze the performance of the multilayer FCA network in the absence of the HLP module. The results indicate that even without prototypes, the FCA module can still deliver strong performance.
少镜头分割力求仅使用有限数量的标记图像来分割新类别。当前的原型学习和相关学习方法难以有效地利用来自支持和查询图像的高级别和低级别信息,从而导致次优分割结果。在这项工作中,我们提出了一种具有高层和低层原型(HLP)的多层特征交叉激活(FCA)网络,该网络从特征和原型的角度充分利用了支持和查询信息。具体而言,对于FCA模块,我们设计了一种简单的激活方法,利用所有像素级支持前景特征激活查询特征,从而在不丢失支持特征像素级详细信息的情况下获得激活图。在HLP模块中,我们将图像级原型与像素级原型相结合,充分利用支持特征的高级类别信息和低级属性信息。此外,原型生成方法集成了查询信息,进一步使原型能够更好地匹配目标查询特征,特别是在查询图像与支持图像差异较大的情况下。在PASCAL-$5^{i}$和COCO-$20^{i}$上进行的1次和5次设置下的大量实验验证了我们的FCA-HLP的有效性。我们的方法建立了新的最先进的性能。此外,我们还分析了在没有HLP模块的情况下多层FCA网络的性能。结果表明,即使没有原型,FCA模块仍然可以提供强大的性能。
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引用次数: 0
CIBLS-PLS: A Class-Incremental Broad Learning System With Pseudolabel-Guided Stacked Structure 基于伪标签引导堆叠结构的类增量广义学习系统
Pub Date : 2025-09-09 DOI: 10.1109/TAI.2025.3606902
Xin Liu;Zhaoyin Shi;Shuanghao Zhang;Long Chen;Weiping Ding;Xiaopin Zhong;Zongze Wu;C. L. Philip Chen
Class-incremental learning (CIL) with the broad learning system (BLS) has emerged as a computationally efficient alternative to deep incremental models. However, existing BLS-based CIL methods struggle with complex data distributions and are highly sensitive to hyperparameter tuning, leading to suboptimal knowledge retention. To address these challenges, we propose CIBLS-PLS (class-incremental broad learning system with pseudolabel-guided stacked structure), which enhances knowledge retention and adaptability. Different from traditional stacked BLS, where blocks are strictly chained through input-output dependencies, CIBLS-PLS adopts a more flexible stacking structure, allowing each block to independently contribute to knowledge preservation. Each BLS layer integrates dual-storage modules that retain key features from previous data, while pseudolabels are generated to facilitate seamless knowledge integration within the stacked residual learning framework. Model parameters are updated efficiently via closed-form ridge regression, significantly reducing computational overhead while maintaining high accuracy. Additionally, to further enhance model generalization, an adaptive scaling mechanism dynamically regulates the contribution of residual blocks, effectively preventing overfitting as the number of blocks increases. This property is rigorously validated through both theoretical analysis and extensive experiments. Results on seven large-scale image datasets demonstrate that CIBLS-PLS achieves state-of-the-art performance in accuracy and knowledge retention while maintaining competitive computational efficiency, paving the way for robust and scalable broad learning-based incremental models.
类增量学习(CIL)与广义学习系统(BLS)已经成为一种计算效率高的替代深度增量模型。然而,现有的基于bls的CIL方法难以处理复杂的数据分布,并且对超参数调优高度敏感,导致次优的知识保留。为了解决这些问题,我们提出了CIBLS-PLS(类增量广义学习系统,带有伪标签引导的堆叠结构),该系统增强了知识保留和适应性。与传统的层叠式BLS不同,层叠式BLS通过输入输出依赖关系将块严格链接起来,而CIBLS-PLS采用更灵活的堆叠结构,允许每个块独立地为知识保存做出贡献。每个BLS层都集成了双存储模块,保留了以前数据的关键特征,同时生成伪标签,以便在堆叠残差学习框架内实现知识的无缝集成。通过闭式脊回归有效地更新模型参数,在保持高精度的同时显著减少了计算开销。此外,为了进一步增强模型的泛化,自适应缩放机制动态调节残差块的贡献,有效防止随着块数量的增加而过度拟合。这一特性通过理论分析和广泛的实验得到了严格的验证。在七个大规模图像数据集上的结果表明,CIBLS-PLS在准确性和知识保留方面达到了最先进的性能,同时保持了有竞争力的计算效率,为鲁棒和可扩展的基于广泛学习的增量模型铺平了道路。
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引用次数: 0
Multirate Distributed Receding Horizon Reinforcement Learning for Optimal UAV–UGV Formation Control 基于多速率分布式后退水平强化学习的UAV-UGV最优编队控制
Pub Date : 2025-09-09 DOI: 10.1109/TAI.2025.3607722
Xinglong Zhang;Cong Li;Ronghua Zhang;Quan Xiong;Wei Jiang;Xin Xu
The coordination of unmanned aerial vehicles (UAVs) and unmanned ground vehicles (UGVs) is valuable in many applications, such as emergency search and rescue, and has received increasing attention in recent years. Given their distinct tasks and dynamic characteristics, the UAV team is typically controlled with higher maneuverability for rapid searching, while the UGV team is operated on roads at lower speeds to ensure stability and performance. This discrepancy naturally results in a multirate control problem, which has not been adequately addressed in previous works. Therefore, we present a multirate distributed receding horizon reinforcement learning (RHRL) framework to solve the optimal UAV–UGV formation control problem on fast and slow time scales. The proposed approach includes a distributed RHRL algorithm operating at a slower time scale for the formation control of UGV teams, and another distributed RHRL algorithm functioning at a faster time scale for the formation control of UAV teams. The state information among homogeneous UAV/UGV agents and heterogeneous agents across different teams are exchanged at different frequencies to balance control performance and communication load. Notably, our approach integrates the receding horizon strategy to enhance learning efficiency and provides theoretical guarantees in multirate distributed RL. Theoretically, learning convergence at different time scales and closed-loop stability are guaranteed. Comparative numerical validations are conducted to demonstrate the effectiveness of our approach in heterogeneous UAV–UGV formation control under different time scales and tasks.
无人机(uav)和地面无人驾驶车辆(ugv)的协同在紧急搜救等许多应用中具有重要价值,近年来受到越来越多的关注。鉴于其独特的任务和动态特性,无人机团队通常具有更高的机动性以进行快速搜索,而UGV团队则以较低的速度在道路上运行,以确保稳定性和性能。这种差异自然会导致多速率控制问题,这在以前的工作中没有得到充分的解决。为此,我们提出了一种多速率分布式后退地平线强化学习(RHRL)框架来解决快速和慢速时间尺度上的UAV-UGV最优编队控制问题。该方法包括一种运行在较慢时间尺度上的分布式RHRL算法,用于UGV分队的编队控制,以及另一种运行在较快时间尺度上的分布式RHRL算法,用于无人机分队的编队控制。采用不同频率交换异构agent和同构agent之间的状态信息,平衡控制性能和通信负荷。值得注意的是,我们的方法集成了后退地平线策略,提高了学习效率,并为多速率分布式强化学习提供了理论保证。理论上保证了学习在不同时间尺度下的收敛性和闭环稳定性。通过对比数值验证,验证了该方法在不同时间尺度和任务下的异构UAV-UGV编队控制中的有效性。
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引用次数: 0
Distributed Reinforcement Learning Optimal Cluster Consensus Control for Takagi–Sugeno Fuzzy Multiagent Systems Takagi-Sugeno模糊多智能体系统的分布式强化学习最优聚类一致性控制
Pub Date : 2025-09-09 DOI: 10.1109/TAI.2025.3607790
Hui Li;Jun Ning;Shaocheng Tong
This article studies the distributed optimal cluster consensus control problem with a data-driven value iteration (VI) algorithm for Takagi–Sugeno (T–S) fuzzy multiagent systems (MASs) with unknown system dynamics. In distributed optimal cluster consensus control design, we view each agent’s control policy and its neighboring followers’ control policy as rival players, and then a fuzzy distributed optimal cluster consensus control policy is proposed by applying differential graphical game theory and acyclic partition. Since the analytical optimal cluster consensus control solutions are reduced to solving the distributed game algebraic Riccati equations (GAREs), which are difficult to obtain their analytical solutions, a data-driven VI algorithm is presented. It is proven that the developed algorithm can converge to the approximation solutions of optimal controllers, and the proposed fuzzy distributed optimal cluster consensus control scheme not only guarantees the followers in each cluster to asymptotically track their corresponding leaders but also achieves the Nash equilibrium of differential graphical game. Finally, we apply the developed fuzzy distributed optimal cluster consensus control method with a data-driven VI algorithm to multiple nonlinear unmanned surface vehicle (USV) systems, the computer simulation results verify the effectiveness of the developed optimal control approach.
本文研究了具有未知系统动力学的Takagi-Sugeno (T-S)模糊多智能体系统的分布式最优聚类一致性控制问题。在分布式最优聚类共识控制设计中,我们将每个agent的控制策略及其相邻follower的控制策略视为竞争对手,然后应用微分图博弈论和无环划分提出了一种模糊分布式最优聚类共识控制策略。针对解析型最优聚类共识控制解被简化为求解难以获得解析解的分布式博弈代数Riccati方程的问题,提出了一种数据驱动的VI算法。证明了该算法能收敛到最优控制器的近似解,所提出的模糊分布式最优聚类共识控制方案不仅保证了每个聚类中的follower能渐近跟踪其对应的leader,而且实现了微分图对策的纳什均衡。最后,将所提出的基于数据驱动VI算法的模糊分布式最优聚类一致性控制方法应用于多个非线性无人水面车辆系统,计算机仿真结果验证了所提出的最优控制方法的有效性。
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引用次数: 0
Wasserstein Distance-Based Multisource Heterogeneous Graph Adaptation for Cross-Network Node Classification 基于Wasserstein距离的多源异构图自适应跨网络节点分类
Pub Date : 2025-09-09 DOI: 10.1109/TAI.2025.3606456
Hongwei Yang;Jiaoxuan Lin;Hui He;Weizhe Zhang;Letu Suya
Cross-network node classification seeks to leverage labeled source networks to assist node classification in an unlabeled target network. However, existing heterogeneous graph adaptation methods often rely on restrictive assumptions, such as the presence of a single source network or strong correlations between source and target nodes, which rarely hold in practice. To address this, we propose a novel Wasserstein distance-based multisource heterogeneous graph adaptation framework (WMHGA), which aims to learn transferable node representations across networks in order to improve the accuracy of node classification tasks. Specifically, we propose a Wasserstein distance-based heterogeneous graph adaptation approach to learn node representations that are invariant to domain variations. Then, we propose two Wasserstein distance-based knowledge distillation approaches to identify more valuable samples from the source graph and learn label-discriminative node representations of these samples for knowledge transfer. In addition, we devise a Wasserstein distance-based aggregated prediction to prioritize highly relevant source nodes while suppressing irrelevant ones, thereby ensuring more accurate node classification in the target network. Extensive experiments have been conducted on three real-world datasets, demonstrating that the proposed WMHGA model outperforms the state-of-the-art baselines.
跨网络节点分类寻求利用标记的源网络来协助未标记的目标网络中的节点分类。然而,现有的异构图自适应方法往往依赖于限制性假设,例如存在单源网络或源节点和目标节点之间存在强相关性,这些假设在实践中很少成立。为了解决这个问题,我们提出了一种新的基于Wasserstein距离的多源异构图自适应框架(WMHGA),该框架旨在学习跨网络可转移的节点表示,以提高节点分类任务的准确性。具体来说,我们提出了一种基于Wasserstein距离的异构图自适应方法来学习不受域变化影响的节点表示。然后,我们提出了两种基于Wasserstein距离的知识蒸馏方法,从源图中识别更多有价值的样本,并学习这些样本的标签判别节点表示以进行知识转移。此外,我们设计了一种基于Wasserstein距离的聚合预测,优先考虑高度相关的源节点,同时抑制不相关的源节点,从而确保目标网络中更准确的节点分类。在三个真实数据集上进行了广泛的实验,表明所提出的WMHGA模型优于最先进的基线。
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引用次数: 0
Dual Thinking and Logical Processing in Human Vision and Multimodal Large Language Models 人类视觉的双重思维和逻辑处理与多模态大语言模型
Pub Date : 2025-09-08 DOI: 10.1109/TAI.2025.3606452
Kailas Dayanandan;Nikhil Kumar;Anand Sinha;Brejesh Lall
The dual thinking framework considers fast, intuitive, and slower logical processing. The perception of dual thinking in vision requires images where inferences from intuitive and logical processing differ, and the latter is under-explored in current studies. We introduce a novel adversarial dataset to provide evidence for the dual thinking framework in human vision, which also facilitates the study of the qualitative behavior of deep learning models. Our psychophysical studies show the presence of multiple inferences in rapid succession, and analysis of errors shows that the early stopping of visual processing can result in missing relevant information. Multimodal large language models (MLLMs) and vision language models (VLMs) have made significant progress in correcting errors in intuitive processing in human vision and showed enhanced performance on images requiring logical processing. However, their improvements in logical processing have not kept pace with their advancements in intuitive processing. In contrast, segmentation models exhibit errors similar to those seen in intuitive human processing and lack understanding of substructures, as indicated by errors related to subcomponents in identified instances. As artificial intelligence (AI)-based systems find increasing applications in safety-critical domains such as autonomous driving, the integration of logical processing capabilities becomes essential. This not only enhances performance but also addresses the limitations of scaling-based approaches while ensuring robustness and reliability in real-world environments.
双重思维框架考虑快速、直观和较慢的逻辑处理。视觉上的双重思维感知需要直观和逻辑推理不同的图像,而后者在目前的研究中尚未得到充分的探讨。我们引入了一个新的对抗性数据集,为人类视觉中的双重思维框架提供证据,这也促进了深度学习模型定性行为的研究。我们的心理物理研究表明,在快速连续中存在多个推理,错误分析表明,早期停止视觉处理可能导致丢失相关信息。多模态大语言模型(MLLMs)和视觉语言模型(VLMs)在纠正人类视觉直观处理中的错误方面取得了重大进展,在需要逻辑处理的图像上表现出了更强的性能。然而,他们在逻辑处理方面的进步并没有跟上他们在直觉处理方面的进步。相反,分割模型表现出与直观的人类处理相似的错误,并且缺乏对子结构的理解,如识别实例中与子组件相关的错误所示。随着基于人工智能(AI)的系统在自动驾驶等安全关键领域的应用越来越多,逻辑处理能力的集成变得至关重要。这不仅提高了性能,而且还解决了基于扩展的方法的局限性,同时确保了现实环境中的健壮性和可靠性。
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引用次数: 0
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IEEE transactions on artificial intelligence
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