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Joint Label-Specific Features and Correlation Information for Multi-Label Learning

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Journal of Computer Science & Technology 2020年第2期35卷 247-258页

作者： Xiu-Yi Jia sai-sai Zhu Wei-Wei li School of Computer Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China College of Astronautics Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Multi-label learning deals with the problem where each instance is associated with a set of class *** multilabel learning,different labels may have their own inherent characteristics for distinguishing each other,and the correlation information has shown promising strength in improving multi-label *** this study,we propose a novel multilabel learning method by simultaneously taking into account both the learning of label-specific features and the correlation information during the learning ***,we learn a sparse weight parameter vector for each label based on the linear regression model,and the label-specific features can be extracted according to the corresponding weight ***,we constrain label correlations directly on the output of labels,not on the corresponding parameter vectors which conflicts with the label-specific feature ***,for any two related labels,their corresponding models should have similar outputs rather than similar parameter ***,we also exploit the sample correlations through sparse *** experimental results on 12 benchmark datasets show that the proposed method performs better than the existing *** proposed method ranks in the 1st place at 66.7%case and achieves optimal average rank in terms of all evaluation measures.

关键词： multi-label learning label-specific feature sparse reconstruction label correlation sample correlation

陆缘弧岩浆寂静期花岗质岩浆成因:以青藏高原东南缘腾冲地块晚白垩世花岗岩为例

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岩石学报 2025年第1期41卷 91-111页

作者：赵少伟方肖雨文泰赖绍聪裴先治李佐臣长安大学地球科学与资源学院西安710054 大陆动力学国家重点实验室西北大学地质学系西安710069

陆缘弧岩浆活动常具有幕式特征,展现出弧岩浆爆发和寂静交替的现象。虽然对其律动特征广泛研究,但目前对于岩浆寂静期的岩浆成因机制了解较少。本文通过对比新特提斯洋俯冲相关的陆缘弧岩浆分布特征,以新特提斯洋俯冲过程中陆源弧岩浆... 详细信息

陆缘弧岩浆活动常具有幕式特征,展现出弧岩浆爆发和寂静交替的现象。虽然对其律动特征广泛研究,但目前对于岩浆寂静期的岩浆成因机制了解较少。本文通过对比新特提斯洋俯冲相关的陆缘弧岩浆分布特征,以新特提斯洋俯冲过程中陆源弧岩浆寂静期的腾冲地块晚白垩世花岗质岩石为研究对象,探讨其形成过程,为寂静期岩浆的成因动力学机制提供重要约束。腾冲地块户撒地区二长花岗岩锆石U-Pb年龄为73Ma,形成于新特提斯洋俯冲陆缘弧晚白垩世(85~65Ma)的岩浆寂静期,为准铝质-弱过铝质和钙碱质花岗岩,具有富集的Nd-Hf同位素,其源岩为高黎贡山群正变质片麻岩。通过区域对比,晚白垩世(85~65Ma)新特提斯洋低角度俯冲相关的陆源弧应为挤压环境,腾冲地块同期花岗岩类应形成于加厚地壳背景下。通过与爆发期(55~50Ma)岩石组合、地化特征、锆饱和温度和斜长石环带特征的对比,本文认为腾冲地块晚白垩世花岗岩类是加厚地壳长期热积累诱发的下地壳片麻岩部分熔融的结果。因此,在幔源岩浆低通量的陆缘弧寂静期,通过加厚地壳长期热积累可以在陆缘弧局部形成长英质岩浆。

关键词：岩浆寂静期腾冲地块晚白垩世花岗岩

A Smarter Pavlovian Dog with Optically Modulated Associative Learning in an Organic Ferroelectric Neuromem

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Research 2021年第1期2021卷 1148-1157页

作者： Mengjiao pei Changjin Wan Qiong Chang Jianhang Guo sai Jiang Bowen Zhang Xinran Wang Yi Shi Yun li National Laboratory of Solid-State Microstructures School of Electronic Science and EngineeringCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China School of Computing Tokyo Institute of TechnologyTokyo 152-8550Japan School of Microelectronics and Control Engineering Changzhou UniversityChangzhou 213164China

Associative learning is a critical learning principle uniting discrete ideas and percepts to improve individuals’***,enabling high tunability of the association processes as in biological counterparts and thus integration of multiple signals from the environment,ideally in a single device,is ***,we fabricate an organic ferroelectric neuromem capable of monadically implementing optically modulated associative *** approach couples the photogating effect at the interface with ferroelectric polarization switching,enabling highly tunable optical modulation of charge *** device acts as a smarter Pavlovian dog exhibiting adjustable associative learning with the training cycles tuned from thirteen to *** particular,we obtain a large output difference(>10^(3)),which is very similar to the all-or-nothing biological sensory/motor neuron spiking with decrementless *** proof-of-concept demonstrations,photoferroelectric coupling-based applications in cryptography and logic gates are achieved in a single device,indicating compatibility with biological and digital data processing.

关键词： ferroelectric associative proof

Retinal ganglion cell-inner plexiform and nerve fiber layers in neuromyelitis optica

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International Journal of Ophthalmology(English edition) 2018年第1期11卷 89-93页

作者： sai-Jing Hu pei-Rong Lu Department of Ophthalmology the First Affiliated Hospital of Soochow University Department of Ophthalmology the First Affiliated Hospital of Wenzhou Medical University

AIM： To determine the thickness of the retinal ganglion cell-inner plexiform layer（GCIPL） and the retinal nerve fiber layer（RNFL） in patients with neuromyelitis optica（NMO）.METHODS： We conducted a cross-sectional study that included 30 NMO patients with a total of 60 eyes. Based on the presence or absence of optic neuritis（ON）, subjects were divided into either the NMO-ON group（30 eyes） or the NMO-ON contra group（10 eyes）. A detailed ophthalmologic examination was performed for each group; subsequently, the GCIPL and the RNFL were measured using highdefinition optical coherence tomography（OCT）. RESULTS： In the NMO-ON group, the mean GCIPL thickness was 69.28±21.12 μm, the minimum GCIPL thickness was 66.02±10.02 μm, and the RNFL thickness were 109.33±11.23, 110.47±3.10, 64.92±12.71 and 71.21±50.22 μm in the superior, inferior, temporal and nasal quadrants, respectively. In the NMO-ON contra group, the mean GCIPL thickness was 85.12±17.09 μm, the minimum GCIPL thickness was 25.39±25.1 μm, and the RNFL thicknesses were 148.33±23.22, 126.36±23.45, 82.21±22.30 and 83.36±31.28 μm in the superior, inferior, temporal and nasal quadrants, respectively. In the control group, the mean GCIPL thickness was 86.98±22.37 μm, the minimum GCIPL thickness was 85.28±10.75 μm, and the RNFL thicknesses were 150.22±22.73, 154.79±60.23, 82.33±7.01 and 85.62±13.81 μm in the superior, inferior, temporal and nasal quadrants, respectively. The GCIPL and RNFL were thinner in the NMO-ON contra group than in the control group（P〈0.05）; additionally, the RNFL was thinner in the inferior quadrant in the NMO-ON group than in the control group（P〈0.05）. Significant correlations were observed between the GCIPL and RNFL thickness measurements as well as between thickness measurements and the two visual field parameters of mean deviation（MD） and corrected pattern standard deviation（PSD） in the NMO-ON group（P〈0.05）. CONCLUSION： The thickness of the GCIPL and RNFL, as measured using OCT, may indicate optic

关键词： neuromyelitis optica retinal nerve fiber layer thickness ganglion cell-inner plexiform layer optical coherence tomography

地应力影响下的五孔掏槽爆破岩石损伤效应研究

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火工品 2025年第1期 89-96页

作者：杨赛群葛立芳李洪伟夏治园安徽江南爆破工程有限公司安徽宣城242000 安徽江南化工股份有限公司安徽合肥230088 安徽理工大学化工与爆破学院安徽淮南232001

在地下矿山开采过程中,地应力对巷道掘进效率的影响日益显著。本研究以某地下铁矿为研究对象,采用有限元软件LS-DYNA模拟不同地应力条件下五孔掏槽爆破掏槽孔孔间延期时间对岩石损伤程度的影响。通过现场爆破实验和块度识别软件验证模... 详细信息

在地下矿山开采过程中,地应力对巷道掘进效率的影响日益显著。本研究以某地下铁矿为研究对象,采用有限元软件LS-DYNA模拟不同地应力条件下五孔掏槽爆破掏槽孔孔间延期时间对岩石损伤程度的影响。通过现场爆破实验和块度识别软件验证模拟结果,探究了地应力、孔间延期时间与岩石损伤程度之间的关系。研究结果表明,地应力由0 MPa增加到10 MPa,五孔掏槽爆破掏槽孔最佳延期时间由60 ms减少为10 ms,相应的岩石损伤程度降低79%。地应力对爆破远区岩石裂纹的发育影响较大,而对近区影响较小。现场实验进一步证实了数值模拟的结论,表明可以根据实际地应力大小合理设置延期时间,有效降低大块率,提高爆破效率。

关键词：五孔掏槽爆破地应力延期时间 LS-DYNA 损伤程度

高校图书馆数字资源违规使用对策设计及其仿真校验

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现代情报 2025年第1期45卷 18-32页

作者：李英群裴雷朱静娴李亚菲彭星张晶南京大学信息管理学院江苏南京210023 南京大学数据智能与交叉创新实验室江苏南京210023 中国移动研究院北京100053

[目的/意义]高校图书馆数字资源违规使用治理政策涉及多方利益主体博弈,单一维度的分析视角无法从系统层面有效调和并解决这一矛盾冲突。[方法/过程]本文采用演化博弈理论框架,构建数据供应商、高校图书馆和用户的三方演化博弈模型,探... 详细信息

[目的/意义]高校图书馆数字资源违规使用治理政策涉及多方利益主体博弈,单一维度的分析视角无法从系统层面有效调和并解决这一矛盾冲突。[方法/过程]本文采用演化博弈理论框架,构建数据供应商、高校图书馆和用户的三方演化博弈模型,探究各主体的行为模式及其均衡稳定策略。通过构建层次结构模型对参数赋值,以提升仿真分析结果的可靠性和真实性。随后通过MATLAB仿真实验,剖析了各类因素对于演化博弈的影响机制与作用路径,厘清利益对象间的动态交互关系和关联结构。[结果/结论]研究结果显示,该博弈模型呈现出两种不同的演化稳定策略状态,并基于数据资源违规使用的现状,分别从三方博弈主体提出针对性的意见。

关键词：高校图书馆供应商用户数字资源合规使用违规使用政策设计演化博弈仿真分析

Property Changes of Gamma-Ray Bursts

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Chinese Physics Letters 1996年第8期13卷 637-640页

作者： li Ti-pei Institute of High Energy Physics Chinese Academy of SciencesBeijing 100039

From analysing the third burst and transient source experiment gamma-ray burst catalog,systematic variations of average observational characteristics ofγ-ray bursts(GRBs)with a time scale of months to years are revealed,which raise a difficulty to existing models and indicate an origin of GRBs,at least partly,within the heliosphere.A possible GRB producing process is discussed.

关键词： difficulty transient origin

Symmetry of solutions for a fractional system

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Science China Mathematics 2017年第10期60卷 1805-1824页

作者： li Yan MA pei Department of Mathematical Sciences Yeshiva University School of Mathematical Sciences Nanjing Normal University

We consider a pseudo-differential system involving different fractional orders. Through an iteration method, we obtain the key ingredients—the maximum principles—of the method of moving planes. Then we derive symmet... 详细信息

关键词： the fractional Laplacian narrow region principle decay at infinity method of moving planes radial symmetry

Regulation of Oxygen Activity by Lattice Confinement over Ni_(x)Mg_(1-x)O Catalysts for Renewable Hydrogen Production

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Engineering 2022年第5期8卷 62-69页

作者： Hao Tian Chunlei pei sai Chen Yang Wu Zhijian Zhao Jinlong Gong Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China

The chemical looping steam reforming(CLSR)of bioethanol is an energy-efficient and carbon-neutral approach of hydrogen *** paper describes the use of a Ni_(x)Mg_(1-x)O solid solution as the oxy-gen carrier(OC)in the CLSR of *** to the regulation effect of Mg^(2+)in Ni_(x)Mg_(1-x)O,a three-stage reaction mechanism of the CLSR process is *** surface oxygen of Ni_(x)Mg_(1-x)O initially causes complete oxidation of the ***,H_(2)O and bulk oxygen confined by Mg^(2+)react with etha-nol to form CH_(3)COO^(*)followed by H_(2) over partially reduced Ni_(x)Mg_(1-x)*** the bulk oxygen is con-sumed,the ethanol steam reforming process is promoted by the metallic nickel in the stage Ⅲ.As a result,Ni_(0.4)Mg_(0.6)O exhibits a high H_(2) selectivity(4.72 mol H_(2) per mole ethanol)with a low steam-to-carbon molar ratio of 1,and remains stable over 30 CLSR *** design of this solid-solution OC pro-vides a versatile strategy for manipulating the chemical looping process.

关键词： Chemical looping Ethanol steam reforming Nickel Hydrogen production Solid solution