检索结果-内蒙古大学图书馆

arXiv 2024年

作者： Ye, Rongguang Chen, Lei Liao, Weiduo Zhang, Jinyuan Ishibuchi, Hisao Guangdong Provincial Key Laboratory of Brain-inspired Intelligent Computation Department of Computer Science and Engineering Southern University of Science and Technology Shenzhen518055 China School of Mathematics and Statistics Guangdong University of Technology Guangzhou51000 China

Pareto front learning is a technique that introduces preference vectors in a neural network to approximate the Pareto front. Previous Pareto front learning methods have demonstrated high performance in approximating simple Pareto fronts. These methods often sample preference vectors from a fixed Dirichlet distribution. However, no fixed sampling distribution can be adapted to diverse Pareto fronts. Efficiently sampling preference vectors and accurately estimating the Pareto front is a challenge. To address this challenge, we propose a data-driven preference vector sampling framework for Pareto front learning. We utilize the posterior information of the objective functions to adjust the parameters of the sampling distribution flexibly. In this manner, the proposed method can sample preference vectors from the location of the Pareto front with a high probability. Moreover, we design the distribution of the preference vector as a mixture of Dirichlet distributions to improve the performance of the model in disconnected Pareto fronts. Extensive experiments validate the superiority of the proposed method compared with state-of-the-art *** Codes 68T05 Copyright © 2024, The Authors. All rights reserved.

关键词： Vectors

来源：评论

学校读者我要写书评

暂无评论

A Morphology Focused Cell Detection Model for Histopathology Images

A Morphology Focused Cell Detection Model for Histopathology...

引用

IEEE International Conference on Bioinformatics and Biomedicine (BIBM)

作者： Zhe Wang Fangyue Wei Shuyu Guo Xiaoting Che Tian Bai College of Computer Science and Technology Jilin University Changchun China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun China

The accurate automatic recognition of cell locations is of great significance for downstream tasks in pathology. Due to the various size and distribution of different cell types, previous cell detection methods applied fixed circles as labels to localize cell position by default, which makes less precise and more difficult to adapt various cell morphology. In this paper, we integrate adaptive areas of interests based on morphology to address the limitation in detecting cells with irregular shapes in pathological images. Moreover, a EGSI module is proposed to extract global distribution of cells in slices, which enables model to acquire more rich semantic information. We exhibit favorable F 1 score of our method on four public datasets. Experimental results demonstrate that the proposed method could detect cells more accurately in those images with different cell morphologies and dense cell distribution.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Assessment of Standard Syntaxis of Basin and Sub-basin Flood and Urban Drainage in Taihu Basin 7

Assessment of Standard Syntaxis of Basin and Sub-basin Flood...

引用

7th International Conference on Hydraulic and Civil engineering and Smart Water Conservancy and Intelligent Disaster Reduction Forum, ICHCE and SWIDR 2021

作者： Li, Xiting Shang, Shouwei Wang, Leizhi Wang, Yintang Li, Lingjie State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering Science Nanjing Hydraulic Research Institute Jiangsu Nanjing China State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University Tianjin China

ISBN: (纸本)9781665408653

Based on the existing flood control projects under the current flood control and drainage standards of the Taihu Basin, sub-basin, and urban, a 50a return period design storm that is the most unfavorable condition for flood control in the basin is selected as the rainfall data and input into the hydrological and hydrodynamic model for simulation. The safety capacity (K) and safety coefficient (Ki) are used to evaluate the standard syntaxis of basin and sub-basin flood and urban drainage in Taihu Basin The results show that the basin, sub-baisn flood control standards and urban drainage standards are deficient of standard syntaxis. The current flood control standards of basin can basically prevent the 50a return period flooding of basin, but the sub-baisn flood control standards and urban drainage standards are shortage. The contradiction of standard syntaxis of basin and sub-basin flood and urban drainage in the northern of the study area is more prominent than that in the southern. The urban drainage activities by polder areas have affected the flood discharge capacity of the channels of basin and sun-basin along the river, and further increased the pressure of the flood control regulation and storage of the Lake Tai. It is urgent to accelerate the construction of the key projects to improve the flood control standards in the northern of Taihu Basin. © 2021 IEEE.

关键词： Flood control

来源：评论

学校读者我要写书评

暂无评论

Synergistic PM_(2.5)and O_(3)control to address the emerging global PM_(2.5)-O_(3)compound pollution challenges

引用

Eco-Environment & Health 2024年第3期3卷 325-337页

作者： Chao He Jianhua Liu Yiqi Zhou Jingwei Zhou Lu Zhang Yifei Wang Lu Liu Sha Peng College of Resources and Environment Yangtze UniversityWuhan 430100China Hubei Key Laboratory of Petroleum Geochemistry and Environment Yangtze UniversityWuhan 430100China School of Geography and Ocean Science Nanjing UniversityNanjing 210023China Hydrology and Environmental Hydraulics Group Wageningen University and ResearchWageningen 6700 HBthe Netherlands State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China State Key Joint Laboratory for Environmental Simulation and Pollution Control School of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China Collaborative Innovation Center for Emissions Trading System Co-constructed by the Province and Ministry Hubei University of EconomicsWuhan 430205China

In recent years,the issue of PM_(2.5)-O_(3)compound pollution has become a significant global environmental *** study examines the spatial and temporal patterns of global PM_(2.5)-O_(3)compound pollution and exposure risks,firstly at the global and urban scale,using spatial statistical regression,exposure risk assessment,and trend analyses based on the datasets of daily PM_(2.5)and surface O_(3)concentrations monitored in 120 cities around the world from 2019 to ***,on the basis of the common emission sources,spatial heterogeneity,interacting chemical mechanisms,and synergistic exposure risk levels between PM_(2.5)and O_(3)pollution,we proposed a synergistic PM_(2.5)-O_(3)control framework for the joint control of PM_(2.5)and *** results indicated that:(1)Nearly 50%of cities worldwide were affected by PM_(2.5)-O_(3)compound pollution,with China,South Korea,Japan,and India being the global hotspots for PM2.5-O3 compound pollution;(2)Cities with PM_(2.5)-O_(3)compound pollution have exposure risk levels dominated by ST t ST(Stabilization)and ST t HR(High Risk).Exposure risk levels of compound pollution in developing countries are significantly higher than those in developed countries,with unequal exposure characteristics;(3)The selected cities showed significant positive spatial correlations between PM_(2.5)and O_(3)concentrations,which were consistent with the spatial distribution of the precursors NOx and VOCs;(4)During the study period,52.5%of cities worldwide achieved synergistic reductions in annual average PM_(2.5)and O_(3)*** average PM_(2.5)concentration in these cities decreased by 13.97%,while the average O_(3)concentration decreased by 19.18%.This new solution offers the opportunity to construct intelligent and healthy cities in the upcoming low–carbon transition.

关键词： PM_(2.5)-O_(3)compound pollution Population exposure risk Spatial correlation Synergistic treatment potential

来源：评论

学校读者我要写书评

暂无评论

Intralayer Phonons in Multilayer Graphene Moiré Superlattices

引用

Research 2022年第3期2022卷 385-395页

作者： Miao-Ling Lin Min Feng Jiang-Bin Wu Fei-Rong Ran Tao Chen Wei-Xia Luo Heng Wu Wen-Peng Han Xin Zhang Xue-Lu Liu Yang Xu Hai Li Yu-Fang Wang Ping-Heng Tan State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering&CAS Center of Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100049China School of Physics Nankai UniversityTianjin 300071China Key Laboratory of Flexible Electronics and Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University30 South Puzhu RoadNanjing 211816China School of Micro-nanoelectronics State Key Laboratory of Silicon MaterialsHangzhou Global Scientific and Technological Innovation CenterZJU-UIUC Joint InstituteZhejiang UniversityHangzhou 310027China

Moirépattern in twisted multilayers(tMLs)induces many emergent phenomena by subtle variation of atomic registry to modulate quasiparticles and their interactions,such as superconductivity,moiréexcitons,and moiré*** periodic superlattice potential introduced by moirépattern also underlies patterned interlayer coupling at the interface of *** this arising patterned interfacial coupling is much weaker than in-plane atomic interactions,it is crucial in moirésystems,as captured by the renormalized interlayer phonons in twisted bilayer transitional metal ***,we determine the quantitative relationship between the lattice dynamics of intralayer out-of-plane optical(ZO)phonons and patterned interfacial coupling in multilayer graphene moirésuperlattices(MLG-MS)by the proposed perturbation model,which is previously challenging for MLGs due to their out-of-phase displacements of adjacent atoms in one atomic *** unveil that patterned interfacial coupling introduces profound modulations on Davydov components of nonfolded ZO phonon that are localized within the AB-stacked constituents,while the coupling results in layer-extended vibrations with symmetry of moirépattern for moiréZO *** work brings further degrees of freedom to engineer moiréphysics according to the modulations imprinted on the phonon frequency and wavefunction.

关键词： coupling twisted layer

来源：评论

学校读者我要写书评

暂无评论

computational Methods for Inferring and Reconstructing Gene Regulatory Networks

Computational Methods for Inferring and Reconstructing Gene ...

引用

作者： Xianglu Zhou Haiyang Jia College of Computer Science and Technology Jilin University College of Software Jilin University Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of EducationJilin University

Gene regulatory network(GRN) describes dynamic and complex gene interactions that determine the functions of ***,understanding of GRNs has played a great role in cancer treatment,drug design,and gene ***,the GRN study suffers from a lack of experiment measurement data and the complexity of the *** approaches have evolved in recent years to promote the study of *** this review,we summarized popular computational approaches for GRN *** started with traditional bioinformatic methods,such as Bayesian networks and mutual information ***,we introduced how today's hot technology in the computer field-machine learning benefited GRN ***-based approaches and other machine-learning methods are elaborated on in this *** discussed not only the advantages and progression brought by various methods but also the drawbacks and limitations,such as the accuracy and robustness of GRN *** expect to inspire readers for improved GRN study approaches via our introduction to this field.

关键词： Gene Regulatory Network Bioinformatics Machine Learning

来源：评论

学校读者我要写书评

暂无评论

Learning-Based Problem Reduction for Large-Scale Uncapacitated Facility Location Problems

Learning-Based Problem Reduction for Large-Scale Uncapacitat...

引用

Congress on Evolutionary computation

作者： Shuaixiang Zhang Yixuan Yang Hao Tong Xin Yao Department of Computer Science and Engineering Guangdong Provincial Key Laboratory of Brain-inspired Intelligent Computation Southern University of Science and Technology Shenzhen China Department of Computing and Decision Sciences Lingnan University Hong Kong SAR China

ISBN: (数字)9798350308365

ISBN: (纸本)9798350308372

The uncapacitated facility location problem (UFLP) is a well-known combinational optimization problem, attracting numerous heuristic and meta-heuristic methods. However, these effective algorithms still encounter challenges when solving large-scale UFLP instances. To deal with the thousands of decision variables, one possible approach is to predict and remove unimportant facilities and thus decreases the dimensionality of problem instances. This paper explores the problem reduction of large-scale instances of UFLP. We propose suitable features of facilities to construct machine learning models for UFLP by learning from small instances. Based on this model, we introduce a novel problem reduction strategy-based optimization framework, and apply it to large instances. Through comprehen-sive experiments, we show that the proposed problem reduction strategy can effectively transform the UFLP instances to smaller ones. The performance of existing solution methods can be significantly enhanced, especially on large-scale instances. Under the proposed framework, we also show the generalization abilities of our models, which can be improved further.

关键词： Dimensionality reduction Metaheuristics Training data Transforms Evolutionary computation Benchmark testing Prediction algorithms

来源：评论

学校读者我要写书评

暂无评论

MVMS-RCN: A Dual-Domain Unified CT Reconstruction with Multi-sparse-view and Multi-scale Refinement-correction

arXiv

引用

arXiv 2024年

作者： Fan, Xiaohong Chen, Ke Yi, Huaming Yang, Yin Zhang, Jianping The School of Mathematics and Computational Science Xiangtan University Hunan Key Laboratory for Computation and Simulation in Science and Engineering Xiangtan411105 China The Centre for Mathematical Imaging Techniques Department of Mathematical Sciences The University of Liverpool LiverpoolL6972L United Kingdom The School of Mathematics and Computational Science Xiangtan University Hunan National Applied Mathematics Center Xiangtan411105 China The School of Mathematics and Computational Science Xiangtan University Key Laboratory of Intelligent Computing & Information Processing of Ministry of Education Xiangtan411105 China

X-ray Computed Tomography (CT) is one of the most important diagnostic imaging techniques in clinical applications. Sparse-view CT imaging reduces the number of projection views to a lower radiation dose and alleviates the potential risk of radiation exposure. Most existing deep learning (DL) and deep unfolding sparse-view CT reconstruction methods: 1) do not fully use the projection data;2) do not always link their architecture designs to a mathematical theory;3) do not flexibly deal with multi-sparse-view reconstruction assignments. This paper aims to use mathematical ideas and design optimal DL imaging algorithms for sparse-view CT reconstructions. We propose a novel dual-domain unified framework that offers a great deal of flexibility for multi-sparse-view CT reconstruction through a single model. This framework combines the theoretical advantages of model-based methods with the superior reconstruction performance of DL-based methods, resulting in the expected generalizability of DL. We propose a refinement module that utilizes unfolding projection domain to refine full-sparse-view projection errors, as well as an image domain correction module that distills multi-scale geometric error corrections to reconstruct sparse-view CT. This provides us with a new way to explore the potential of projection information and a new perspective on designing network architectures. The multi-scale geometric correction module is end-to-end learnable, and our method could function as a plug-and-play reconstruction technique, adaptable to various applications. Extensive experiments demonstrate that our framework is superior to other existing state-of-the-art methods. Our source codes are available at https://***/fanxiaohong/MVMS-RCN. Copyright © 2024, The Authors. All rights reserved.

关键词： Geometry

来源：评论

学校读者我要写书评

暂无评论

A dislocation-based model for cyclic plastic response of lath martensitic steels

引用

Acta Mechanica Sinica 2022年第2期38卷 110-118,I0004页

作者： Long Yu Wenbin Liu Haonan Sui Ying Liu Huiling Duan State Key Laboratory for Turbulence and Complex System Department of Mechanics ami Engineering ScienceBeijing Innovation Center for Engineering Science and Advanced Technology(BIC-ESAT)College of EngineeringPeking UniversityBeijing 100871China Key Laboratory of High Energy Density Physics Simulation(HEDPS) Center for Applied Physics and Technology(CAPT)and IFSACollaborative Innovation Center of MoEPeking UniversityBeijing 100871China

Softening behavior of lath martensitic steels is related to the coarsening of laths and dislocation evolution during cyclic *** the physical mechanism,we developed a dislocation-based model to study the cyclic plastic response for lath martensitic *** a block,we proposed an interfacial dislocation evolution model to physically present the interaction between mobile dislocations in the block and interfacial dislocations by considering the coarsening mechanism of the ***,the evolution behavior of backstress caused by dislocation pile up at the block boundary has been ***,a hierarchical model based on the elastic-viscoplastic self-consistent(EVPSC)theory is developed,which can realize the scale transition among representative volume element(RVE),prior austenite grains(PAGs)and *** to the proposed model,the effective mechanical responses including the cyclic hysteretic loop and peak stress at different cycles for lath martensitic steel have been theoretically predicted and investigated.

关键词： Lath martensitic steel Cyclic softening Hierarchical microstructure Lath coarsening Crystal plasticity

来源：评论

学校读者我要写书评

暂无评论

Fine-grained Adaptive Visual Prompt for Generative Medical Visual Question Answering 39

Fine-grained Adaptive Visual Prompt for Generative Medical V...

引用

39th Annual AAAI Conference on Artificial Intelligence, AAAI 2025

作者： Yu, Ting Tong, Zixuan Yu, Jun Zhang, Ke School of Information Science and Technology Hangzhou Normal University Hangzhou China School of Intelligence Science and Engineering Harbin Institute of Technology Shenzhen China Key Laboratory of Complex Systems Modeling and Simulation Hangzhou Dianzi University Hangzhou China

ISBN: (纸本)157735897X

Medical Visual Question Answering (MedVQA) serves as an automated medical assistant, capable of answering patient queries and aiding physician diagnoses based on medical images and questions. Recent advancements have shown that incorporating Large Language Models (LLMs) into MedVQA tasks significantly enhances the capability for answer generation. However, for tasks requiring fine-grained organ-level precise localization, relying solely on language prompts struggles to accurately locate relevant regions within medical images due to substantial background noise. To address this challenge, we explore the use of visual prompts in MedVQA tasks for the first time and propose fine-grained adaptive visual prompts to enhance generative MedVQA. Specifically, we introduce an Adaptive Visual Prompt Creator that adaptively generates region-level visual prompts based on image characteristics of various organs, providing fine-grained references for LLMs during answer retrieval and generation from the medical domain, thereby improving the model’s precise cross-modal localization capabilities on original images. Furthermore, we incorporate a Hierarchical Answer Generator with Parameter-Efficient Fine-Tuning (PEFT) techniques, significantly enhancing the model’s understanding of spatial and contextual information with minimal parameter increase, promoting the alignment of representation learning with the medical space. Extensive experiments on VQA-RAD, SLAKE, and DME datasets validate the effectiveness of our proposed method, demonstrating its potential in generative MedVQA. Copyright © 2025, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：