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IEEE Transactions on Artificial Intelligence 2024年第1期5卷 154-166页

作者： Si-Chao, Lei Xiaolin, Xiao Yue-Jiao, Gong Yun, Li Jun, Zhang the School of Computer Science and Engineering South China University of Technology Guangzhou510006 China the Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen610056 China the School of Computer Science South China Normal University Guangzhou510006 China the Department of Electrical and Electronic Engineering Hanyang University Seoul15588 Korea Republic of

—Spatial optimization problems (SOPs) refer to a class of problems where the decision variables require spatial organization. Existing methods based on evolutionary algorithms (EAs) fit conventional evolutionary operators by flattening the spatial representations of SOPs to one dimension, which hence loses crucial spatial structures of the potential solutions. To address this issue, this article proposes a tensorial evolutionary algorithm (TEA) by formulating a tensor space of the SOPs, where the population of candidate solutions is represented as a third-order tensor. Accordingly, we design a tensor-product crossover operator and a two-phase mutation consisting of a local convolutional mutation operator and a global Gaussian mutation operator in the tensor space. These operators are all implemented based on tensor operations. Under the consideration of spatial context on individual solutions, we devise three types of evolutionary tensors, namely, the crossover tensor, the convolutional mutant tensor, and the Gaussian mutant tensor for the three tensorial evolutionary operators correspondingly. The resultant TEA is tested using two typical real-world SOPs, namely, the facility layout problem and the image steganography problem. Comparative experimental studies validate the effectiveness and robustness of TEA. © 2024 IEEE.

关键词： Evolutionary algorithms

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A Compact MIMO Antenna with Frequency Selective Surface Cells for 5G Applications

A Compact MIMO Antenna with Frequency Selective Surface Cell...

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2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023

作者： Liu, Zonglin Hu, Yulu Li, Bin Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen China School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9781733509657

In this paper, a multi-band MIMO antenna for Sub-6G communication is proposed. Two operating bands are generated by the combination of two rectangular frame structures of different sizes. In addition, by designing and loading frequency selective surface cells and then arranging them appropriately, the antenna is miniaturized to improve the isolation of the antenna while ensuring a compact structure. The results show that the -10dB return loss bandwidth of the antenna is 3.38-3.58GHz and 4.43-6.30GHz, which can cover the n78 and n79 bands in 5G communication. Furthermore, the antenna has good radiation and diversity characteristics with the isolation less than -15dB in the operating band. © 2023 Applied Computational Electromagnetics Society (ACES).

关键词： Frequency selective surfaces

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Half-quantized helical hinge currents in axion insulators

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National science Review 2023年第9期10卷 154-162页

作者： Ming Gong Haiwen Liu Hua Jiang Chui-Zhen Chen X.-C.Xie International Center for Quantum Materials School of Physics Peking University Center for Advanced Quantum Studies Department of Physics Beijing Normal University School of Physical Science and Technology Soochow University Institute for Advanced Study Soochow University CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences

Fractional quantization can emerge in noncorrelated systems due to the parity anomaly,while its condensed matter realization is a challenging *** propose that in axion insulators(AIs),parity anomaly manifests a unique fractional boundary excitation:the half-quantized helical hinge *** helical hinge currents microscopically originate from the lateral Goos-H?nchen(GH) shift of massless side-surface Dirac electrons that are totally reflected from the ***,due to the presence of the massive top and bottom surfaces of the AI,the helical current induced by the GH shift is *** semiclassical wave packet analysis uncovers that the hinge current has a topological origin and its half quantization is robust to parameter ***,we propose an experimentally feasible six-terminal device to identify the half-quantized hinge channels by measuring the nonreciprocal *** results advance the realization of the half-quantization and topological magneto electric responses in AIs.

关键词： axion insulator parity anomaly half-quantization Goos-Hänchen effect topological magnetoelectric effect

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Investigation of paint removal by atmospheric pressure plasma jet

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Plasma science and technology 2023年第8期25卷 130-140页

作者：王志君陈忠文康皓叶宗标 Institute for Advanced Study Chengdu UniversityChengdu 610106People's Republic of China State Owned Jinjiang Machinery Factory Chengdu 610043People's Republic of China Key Laboratory of Radiation Physics and Technology of the Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064People's Republic of China

Acrylic polyurethane paint on the surface of 2A12 Al alloy was cleaned utilizing an atmospheric pressure plasma jet in this *** dynamic evolution of the paint removal process during plasma treatment with time was explored through analysis of morphology and chemical *** results showed that although the thickness of paint could be reduced effectively with an increase in cleaning time,the removal rate of paint gradually decreased with *** the initial cleaning process range,its original smooth morphology of paint turned rugged quickly and was almost unchanged with further plasma *** and chemical state analysis showed that the content of C in the paint layer decreased obviously after plasma *** contrast,the O content increased *** cleaning mechanism could be mainly attributed to the reaction between active O-containing species in air plasma and organic components in the *** removal of superficial organic matter,residue inorganic metal oxide substances aggregated on the *** exposed metal oxides on the one hand elevated the superficial O content,but on the other hand hindered further plasma penetration,resulting in a gradual decrease in cleaning rate with cleaning ***,physical wiping was proposed to be incorporated with the plasma method and effective removal of paint was realized.

关键词： atmospheric pressure plasma jet paint removal dynamic evolution

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GuidedNet: Semi-Supervised Multi-Organ Segmentation via Labeled Data Guide Unlabeled Data 24

GuidedNet: Semi-Supervised Multi-Organ Segmentation via Labe...

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32nd ACM International Conference on Multimedia, MM 2024

作者： Zhao, Haochen Meng, Hui Yang, Deqian Xie, Xiaozheng Wu, Xiaoze Li, Qingfeng Niu, Jianwei School of Computer Science and Engineering Beihang University Beijing China School of Intelligent Science and Technology Hangzhou Institute for Advanced Study University of the Chinese Academy of Sciences Hangzhou China Institute of Software Hangzhou Institute for Advanced Study University of the Chinese Academy of Sciences Hangzhou China School of Computer and Communication Engineering University of Science and Technology Beijing Beijing China School of Software Beihang University Beijing China

ISBN: (纸本)9798400706868

Semi-supervised multi-organ medical image segmentation aids physicians in improving disease diagnosis and treatment planning and reduces the time and effort required for organ *** state-of-the-art methods train the labeled data with ground truths and train the unlabeled data with pseudo-labels. However, the two training flows are separate, which does not reflect the interrelationship between labeled and unlabeled *** address this issue, we propose a semi-supervised multi-organ segmentation method called GuidedNet, which leverages the knowledge from labeled data to guide the training of unlabeled data. The primary goals of this study are to improve the quality of pseudo-labels for unlabeled data and to enhance the network's learning capability for both small and complex organs.A key concept is that voxel features from labeled and unlabeled data that are close to each other in the feature space are more likely to belong to the same *** this basis, a 3D Consistent Gaussian Mixture Model (3D-CGMM) is designed to leverage the feature distributions from labeled data to rectify the generated ***, we introduce a Knowledge Transfer Cross Pseudo Supervision (KT-CPS) strategy, which leverages the prior knowledge obtained from the labeled data to guide the training of the unlabeled data, thereby improving the segmentation accuracy for both small and complex organs. Extensive experiments on two public datasets, FLARE22 and AMOS, demonstrated that GuidedNet is capable of achieving state-of-the-art performance. © 2024 ACM.

关键词： Self-supervised learning

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A Direct Synthesis Approach for Dual-Band Filters Based on Frequency-Variant Triplets

A Direct Synthesis Approach for Dual-Band Filters Based on F...

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2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023

作者： Cao, Guoqun Hu, Yulu Gao, Luanfeng Tan, Zheng Yuan, Haiying Wang, Chenyu Shenzhen Institute for Advanced Study Uestc Shenzhen China School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9781733509657

In this paper, a direct matrix method is presented to synthesize a quasi-canonical dual passband filter based on frequency-variant triplets, which is based on two low-pass prototypes and can achieve different passbands with different bandwidths, orders, and return losses. Compared with the conventional triplet, the proposed method can achieve more transmission zeros with quasi-canonical characteristics without increasing the cross-coupling paths, i.e., the frequency-variant triplet can generate two transmission zeros. Starting from the wheel topology, the process of using matrix transformation to realize the frequency-variant triplet topology is given in detail. A fifth-order, four-zero-point, dual-pass band filter synthesis procedure is given to demonstrate the effectiveness of the synthesis method. © 2023 Applied Computational Electromagnetics Society (ACES).

关键词： Topology

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Accelerate Data Loading in Distributed Training with Fast Reconfigurable Optical Network

Accelerate Data Loading in Distributed Training with Fast Re...

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2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and Optical Communications, IPOC 2024

作者： Li, Wenzhe Zhang, Xinhang Jia, Wenxuan Chen, Zhuohan Yuan, Guojun Wang, Zhan Zhang, Peiheng High Performance Computing Center Institute of Computing Technology CAS Beijing China Department of Intelligent Science and Technology Hangzhou Institute of Advanced Study UCAS Hangzhou China Institute of Intelligent Computing Technology Chinese Academy of Sciences Suzhou China

We enhance our prior all-optical reconfigurable network to accelerate the data loading with minimized communication distance between compute and storage nodes. A novel corresponding data loading scheme is proposed to ... 详细信息

ISBN: (纸本)9798350379266

关键词： Data Loading Distributed Deep Learning Reconfigurable optical network

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A self-cleaning window for high-efficiency photodegradation of indoor formaldehyde

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Chinese Chemical Letters 2024年第9期35卷 340-345页

作者： Changzhu Huang Wei Dai Shimao Deng Yixin Tian Xiaolin Liu Jia Lin Hong Chen Department of Physics Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric PowerShanghai University of Electric PowerShanghai 200090China Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution ControlGuangdong Provincial Key Laboratory of Soil and Groundwater Pollution ControlSchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Eastern Institute for Advanced Study Eastern Institute of TechnologyNingbo 315200China

Formaldehyde(HCHO)as an indoor air pollutant released by new furniture and decorative materials is of great *** a self-cleaning device to remove HCHO is an ideal way to improve indoor air *** this study,a self-cleaning window with a multilayered structure constructed from fluorinedoped tin oxide/bismuth tungstate/resorcinol-formaldehyde resin(FTO/Bi_(2)WO_(6)/RF)has been fabricated,which is capable of degrading HCHO in natural indoor *** as-fabricated device could utilize the natural room light and promote the generation and transfer of the photocatalytic carriers in Bi_(2)WO_(6),which subsequently delivers a good catalytic oxygen reduction efficiency in RF to produce hydrogen peroxide(H_(2)O_(2)).The as-synthesized H_(2)O_(2)could further split into hydroxyl radicals(•OH),then oxide the HCHO molecules in the *** present study demonstrates a novel and efficient strategy to fabricate a transparent multifunctional window for self-cleaning indoor gaseous pollutants,the concept is of great importance to be expanded in a broad range of indoor furniture for in-house air pollution control.

关键词： Bismuth tungstate Resorcinol-formaldehyde Photocatalysis Hydrogen peroxide HCHO degradation

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LIRA: A Learning-based Query-aware Partition Framework for Large-scale ANN Search 25

LIRA: A Learning-based Query-aware Partition Framework for L...

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34th ACM Web Conference, WWW 2025

作者： Zeng, Ximu Deng, Liwei Chen, Penghao Chen, Xu Su, Han Zheng, Kai University of Electronic Science and Technology of China Chengdu China University of Electronic Science and Technology of China Quzhou China School of Computer Science and Engineering UESTC China Shenzhen Institute for Advanced Study UESTC China

ISBN: (纸本)9798400712746

Approximate nearest neighbor search is fundamental in information retrieval. Previous partition-based methods enhance search efficiency by probing partial partitions, yet they face two common issues. In the query phase, a common strategy is to probe partitions based on the distance ranks of a query to partition centroids, which inevitably probes irrelevant partitions as it ignores data distribution. In the partition construction phase, all partition-based methods face the boundary problem that separates a query’s nearest neighbors to multiple partitions, resulting in a long-tailed kNN distribution and degrading the optimal nprobe (i.e., the number of probing partitions). To address this gap, we propose LIRA, a LearnIng-based queRy-aware pArtition framework. Specifically, we propose a probing model to directly probe the partitions containing the kNN of a query, which can reduce probing waste and allow for query-aware probing with nprobe individually. Moreover, we incorporate the probing model into a learning-based redundancy strategy to mitigate the adverse impact of the long-tailed kNN distribution on search efficiency. Extensive experiments on real-world vector datasets demonstrate the superiority of LIRA in the trade-off among accuracy, latency, and query fan-out. © 2025 Copyright held by the owner/author(s).

关键词： Online searching

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A Family of Single-Stage Multiport Inverters for Hybrid Renewable Energy Generation 2

A Family of Single-Stage Multiport Inverters for Hybrid Rene...

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2nd IEEE International Power Electronics and Application Symposium, PEAS 2023

作者： Huang, Zhengqin Zhou, Dehong Shen, Zewei Zou, Jianxiao Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen China School of Automation Engineering University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9798350313765

Hybrid renewable energy generation (HREG) with single-stage multiport (SSM) inverters features high efficiency, small size, high reliability, and a long lifespan. While the limited variety of SSM inverters currently available is impeding the progress of HREG development. To alleviate this issue, a power flow unit combination-based topology method is proposed in this paper to develop more SSM inverters for HREG, where the features of target topologies are revealed by analyzing the operation states and power flow of HREG, and the final topologies can be constructed by combining units to meet the features. Under the proposed topology derivation method, a family of SSM inverters is derived. The analysis of operational mode and the corresponding experimental outcomes for derived topologies have been presented. © 2023 IEEE.

关键词： hybrid renewable energy generation Multiport inverter multisource single-stage conversion topology derivation

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