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A Phrase Topic Model Based on Distributed Representation

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Computers, materials & Continua 2020年第7期64卷 455-469页

作者： jialin ma Jieyi Cheng Lin Zhang Lei Zhou Bolun Chen Jiangsu Internet of Things and Moblie Internet Technology Engineering Laboratory Huaiyin Institute of TechnologyHuai’an223003China University of Fribourg Fribourg1700Switzerland

Traditional topic models have been widely used for analyzing semantic topics from electronic ***,the obvious defects of topic words acquired by them are poor in readability and *** the domain experts are possible to guess their *** fact,phrases are the main unit for people to express *** paper presents a Distributed Representation-Phrase Latent Dirichlet Allocation(DR-Phrase LDA)which is a phrase topic ***,we reasonably enhance the semantic information of phrases via distributed representation in this *** experimental results show the topics quality acquired by our model is more readable and consistent than other similar topic models.

关键词： Phrase topic model LDA distributed representation Gibbs sampling

An Influence maximization Algorithm Based on the Mixed Importance of Nodes

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Computers, materials & Continua 2019年第5期59卷 517-531页

作者： Yong Hua Bolun Chen Yan Yuan Guochang Zhu jialin ma HuaiYin Institute of Technology Huaian223003China University of Fribourg Fribourg1700Switzerland

The influence maximization is the problem of finding k seed nodes that maximize the scope of influence in a social ***,the comprehensive influence of node needs to be considered,when we choose the most influential node set consisted of k seed *** account of the traditional methods used to measure the influence of nodes,such as degree centrality,betweenness centrality and closeness centrality,consider only a single aspect of the influence of node,so the influence measured by traditional methods mentioned above of node is not *** this paper,we obtain the following result through experimental analysis:the influence of a node is relevant not only to its degree and coreness,but also to the degree and coreness of the n-order neighbor ***,we propose a algorithm based on the mixed importance of nodes to measure the comprehensive influence of node,and the algorithm we proposed is simple and *** addition,the performance of the algorithm we proposed is better than that of traditional influence maximization algorithms.

关键词： Influence maximization social network mixed importance coreness

Mining Syndrome Differentiating Principles from Traditional Chinese Medicine Clinical Data

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Computer Systems Science & Engineering 2022年第3期40卷 979-993页

作者： jialin ma Zhaojun Wang Hai Guo Qian Xie Tao Wang Bolun Chen Jiangsu Internet of Things and Mobile Internet Technology Engineering Laboratory Huaiyin Institute of TechnologyHuaian223003China Huaiyin Wu Jutong Institute of Traditional Chinese Medicine Huaian223000China The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University Huaian223000China Jiangsu Eazytec Co. Ltd.WuxiChina University of Fribourg Fribourg1700Switzerland

Syndrome differentiation-based treatment is one of the key characteristics of Traditional Chinese Medicine(TCM).The process of syndrome differentiation is difficult and challenging due to its complexity,diversity and *** syndrome principles from historical records of TCM using data mining(DM)technology has been of high interest in recent ***,in most relevant studies,existing DM algorithms have been simply developed for TCM mining,while the combination of TCM theories or its characteristics with DM algorithms has rarely been *** paper presents a novel Symptom-Syndrome Topic Model(SSTM),which is a supervised probabilistic topic model with three-tier Bayesian *** the SSTM,syndromes are considered as observed topic labels to distinguish certain symptoms from possible symptoms according to their different *** generation of our model is in full compliance with the syndrome differentiation theory of *** results show that the SSTM is more effective than other models for syndrome differentiating.

关键词： TCM syndrome differentiation topic model LDA SSTM

Mn doping effects on the gate-tunable transport properties of Cd3As2 films epitaxied on GaAs

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Journal of Semiconductors 2020年第7期41卷 33-38页

作者： Hailong Wang jialin ma Qiqi Wei Jianhua Zhao State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of materials Science and Optoelectronics Engineering&CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China Beijing Academy of Quantum Information Sciences Beijing 100193China

The Mn doping effects on the gate-tunable transport properties of topological Dirac semimetal Cd3As2 films have been ***-doped Cd3As2 films are directly grown on GaAs(111)B substrates by molecular-beam epitaxy,during which the single crystal phase can be obtained with Mn concentration less than 2%.Shubnikov-de Haas oscillation and quantum Hall effect are observed at low temperatures,and electrons are found to be the dominant carrier in the whole temperature *** Mn content results in smaller lattice constant,lower electron mobility and larger effective band gap,while the carrier density seems to be unaffected by *** experiments show that Shubnikov-de Haas oscillation and quantum Hall effect are slightly modulated by electric field,which can be explained by the variation of electron *** results provide useful information for understanding the magnetic element doping effects on the transport properties of Cd3As2 films.

关键词： molecular-beam epitaxy Dirac semimetal Cd3As2 film Mn doping quantum transport

Giant modulation of magnetism in(Ga,Mn)As ultrathin films via electric field

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Journal of Semiconductors 2019年第9期40卷 61-65页

作者： Hailong Wang jialin ma Jianhua Zhao State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China

Taking the advantages of semiconducting properties and carrier-mediated ferromagnetism in(Ga,Mn)As,a giant modulation of magnetism via electric field in(Ga,Mn)As ultrathin film has been ***,huge interfacial electric field is obtained by using ionic liquid as the gate *** magnetization and transport measurements are employed to characterize the samples,while the transport data are used to analyze the electric filed effect on *** demagnetization of(Ga,Mn)As film is then realized by thinning its thickness down to ~2 nm,during which the degradation of ferromagnetism of(Ga,Mn)As ultrathin film induced by quantum confinement effect is suppressed by inserting a heavily-doped p-type GaAs buffer *** variation of the Curie temperature is more than 100 K,which is nearly 5-times larger than previous *** results provide a new pathway on the efficient electrical control of magnetism.

关键词： (Ga,Mn)As film electric-field effect Curie temperature demagnetization

magneto-transport properties of the off-stoichiometric Co_2MnAl film epitaxially grown on GaAs(001)

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Journal of Semiconductors 2019年第5期40卷 51-54页

作者： Zhifeng Yu Hailong Wang jialin ma Shucheng Tong Jianhua Zhao State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Center of materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

We have investigated the magneto-transport properties of an off-stoichiometric full-Heusler alloy Co_2MnAl single-crystalline film. The Co_(1.65)Mn_(1.35)Al(Cma) film epitaxially grown on Ⅲ–Ⅴ semiconductor GaAs substrate exhibits perpendicular magnetic anisotropy. The resistivity of the Cma film increases with the temperature T decreasing from 300 to 5 K, showing a semiconducting-like transport behavior. Different activation energies are found in three temperature regions with transition temperatures of 35 and 110 K. In the meanwhile, the remanent magnetization can be described by T^(3/2) and T^2 laws in the corresponding medium and high T ranges, respectively. The transition at around 110 K could be attributed to the ferromagnetism evolving from localized to itinerant state. The Curie temperature of the Cma film is estimated to be ～640 K. The intrinsic anomalous Hall conductivity of ～55 Ω^(-1) cm^(-1) is obtained, which is almost twenty times smaller than that of Co_2MnAl.

关键词： full-Heusler alloy magneto-transport property activation model molecular-beam epitaxy

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基于AE-BN的发电机滚动轴承故障诊断

北京航空航天大学学报 2023年第8期49卷 1896-1903页

作者：王进花高媛曹洁马佳林兰州理工大学电气工程与信息工程学院兰州730050 兰州理工大学甘肃工业过程先进控制重点实验室兰州730050 兰州理工大学电气与控制工程国家实验教学中心兰州730050 甘肃省制造信息工程研究中心兰州730050 兰州理工大学计算机与通信学院兰州730050

为解决风力发电机在复杂工况及耦合性、不确定性条件下故障识别的准确性问题,提出了一种基于自动编码器(AE)与贝叶斯网络(BN)的AE-BN故障诊断方法。采用AE对电流信号进行特征提取,得到能够高度表征信号的特征分量;基于故障与特征之间的... 详细信息

为解决风力发电机在复杂工况及耦合性、不确定性条件下故障识别的准确性问题,提出了一种基于自动编码器(AE)与贝叶斯网络(BN)的AE-BN故障诊断方法。采用AE对电流信号进行特征提取,得到能够高度表征信号的特征分量;基于故障与特征之间的因果关系,建立由故障位置、故障状态和故障特征搭建的三层BN;将AE的特征分量与BN的拓扑结构相结合建立风力发电机故障诊断模型,解决故障诊断中的不确定性问题,提高多故障诊断的准确性。实验结果表明:所提方法能够对故障特征信号进行分析及诊断,精确辨识不同故障类型,相比K近邻算法等具有明显优势。

关键词：故障诊断自动编码器贝叶斯网络结构学习特征提取

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美术生和非美术生的动作记忆表象编码

心理发展与教育 2023年第4期39卷 457-464页

作者：王丽娟马嘉琳东北师范大学心理学院长春130024 河南大学教育学部开封475000

研究发现表象通过促进记忆成绩、抑制知觉干扰和遗忘来促进操作效应,然而,以往研究忽略具体形象思维在表象加工中的作用。实验1和2选取美术生和非美术生来控制被试的具体形象思维水平,采用知觉干扰任务和定向遗忘范式探讨操作效应中具... 详细信息

研究发现表象通过促进记忆成绩、抑制知觉干扰和遗忘来促进操作效应,然而,以往研究忽略具体形象思维在表象加工中的作用。实验1和2选取美术生和非美术生来控制被试的具体形象思维水平,采用知觉干扰任务和定向遗忘范式探讨操作效应中具体形象思维水平对表象作用的影响。结果显示,相比非美术生,美术生的表象编码可增强记忆表现、抑制知觉干扰和遗忘。说明具体形象思维可能是表象编码促进操作效应的前提。

关键词：操作效应具体形象思维表象编码促进抑制

中美贸易摩擦对全球价值链重构的影响及中国方案

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国际贸易 2019年第8期 28-35页

作者：吕越马嘉林田琳对外经济贸易大学中国WTO研究院对外经济贸易大学国际经济贸易学院

本文从全球价值链的视角,分析了美国对华发起贸易争端的动因、影响以及中国应对之策,认为中美贸易摩擦的直接原因是经济全球化背景下的中美贸易失衡,深层次原因是两国在政治经济利益上的冲突。中美贸易摩擦将直接导致中美双边贸易额下降... 详细信息

本文从全球价值链的视角,分析了美国对华发起贸易争端的动因、影响以及中国应对之策,认为中美贸易摩擦的直接原因是经济全球化背景下的中美贸易失衡,深层次原因是两国在政治经济利益上的冲突。中美贸易摩擦将直接导致中美双边贸易额下降,对全球供应链和产业链产生冲击,引发贸易、投资转移效应,中间进口品成本上升,国民福利下降。面对波诡云谲的国际形势,中国应保持战略定力,对内深化改革,对外扩大开放,通过技术革新、产业结构调整等方式实现价值链地位攀升,依托“一带一路”倡议、自贸区建设等国家战略,积极参与和引领WTO改革和国际贸易投资协定谈判,逐步构建以中国为主导的“带路”价值链和区域价值链。

关键词：中美关系贸易摩擦全球价值链 “一带一路”倡议