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基于社交媒体数据的应急决策大群体群智知识挖掘及其价值测度方法研究

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管理工程学报 2024年第1期38卷 205-216页

作者：徐选华朱昱承陈晓红中南大学商学院湖南长沙410083 湖南工商大学前沿交叉学院湖南长沙410205

本文针对突发事件下的社交媒体数据体量庞大,但能够辅助应急决策的大群体群智知识分布无序且价值难以测度的问题,提出了一种应急决策大群体群智知识挖掘及其价值测度方法。首先,基于社交媒体博文数据,依据特定应急决策知识框架,采用TF-I... 详细信息

本文针对突发事件下的社交媒体数据体量庞大,但能够辅助应急决策的大群体群智知识分布无序且价值难以测度的问题,提出了一种应急决策大群体群智知识挖掘及其价值测度方法。首先,基于社交媒体博文数据,依据特定应急决策知识框架,采用TF-IDF(term frequency-inverse document trequency)法和改进后的词汇链算法构建了应急决策大群体群智知识挖掘方法;然后,提出了博文热度计算方法,在此基础上根据知识的语义重要性计算博文包含的群智知识总价值,并使用Shapley函数对群智知识价值进行分配;最后,以“新冠疫情”事件为案例对方法进行应用,并通过对比分析说明了方法的有效性和优越性。

关键词：社交媒体数据应急决策大群体群智知识知识价值

A MULTI-ATTRIBUTE LARGE GROUP EMERGENCY DECISION MAKING METHOD BASED ON GROUP PREFERENCE CONSISTENCY OF GENERALIZED INTERVAL-VALUED TRAPEZOIDAL FUZZY NUMBERS

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Journal of Systems Science and Systems Engineering 2015年第2期24卷 211-228页

作者： Xuanhua XU Chenguang Cai Xiaohong Chen Yanju Zhou School of Business Central South University

In this paper, a new decision making approach is proposed for the multi-attribute large group emergency decision-making problem that attribute weights are unknown and expert preference information is expressed by generalized interval-valued trapezoidal fuzzy numbers （GITFNs）. Firstly, a degree of similarity formula between GITFNs is presented. Secondly, expert preference information on different alternatives is clustered into several aggregations via the fuzzy clustering method. As the clustering proceeds, an index of group preference consistency is introduced to ensure the clustering effect, and then the group preference information on different alternatives is obtained. Thirdly, the TOPSIS method is used to rank the alternatives. Finally, an example is taken to show the feasibility and effectiveness of this approach. These method can ensure the consistency degree of group preference, thus decision efficiency of emergency response activities can be improved.

关键词： Generalized interval-valued trapezoidal fuzzy numbers large group decision making,group preference consistency emergency response

社会网络环境下基于群智知识融合的大群体应急决策共识模型

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中国管理科学 2024年第2期32卷 285-297页

作者：徐选华肖婷陈晓红湖南工商大学前沿交叉学院湖南长沙410205 中南大学商学院湖南长沙410083

针对大群体应急决策中信息不完备、共识达成困难等问题,本文构建应急决策群智知识融合模型融合广泛群体的智慧为应急决策服务,并在此基础上,设计大群体应急决策共识模型提高群体共识水平。首先,挖掘社交媒体中的公众群智知识,得到公众... 详细信息

针对大群体应急决策中信息不完备、共识达成困难等问题,本文构建应急决策群智知识融合模型融合广泛群体的智慧为应急决策服务,并在此基础上,设计大群体应急决策共识模型提高群体共识水平。首先,挖掘社交媒体中的公众群智知识,得到公众关注主题及权重,将其作为决策属性信息纳入到应急决策过程中;其次,基于专家的信任关系和偏好关系定义内聚系数和耦合系数,确定聚集融合权重,利用群智知识融合模型融合专家智慧和公众智慧,得到综合的群智知识结果;然后,根据应急决策问题特征确定共识反馈调整参数,基于群智知识融合的结果进行共识测度,分析聚集的内聚特征和耦合特征,识别聚集类型,并提出偏好调整建议,通过共识反馈调整得到高一致性的大群体决策结果;最后,将本文提出的模型方法应用到传染病公共卫生安全事件防控案例中,与其他文献方法进行对比分析,验证本文方法的合理性和优越性。

关键词：社会网络群智知识融合大群体应急决策共识达成过程

CONFLICT MEASURE MODEL FOR LARGE GROUP DECISION BASED ON INTERVAL INTUITIONISTIC TRAPEZOIDAL FUZZY NUMBER AND ITS APPLICATION

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Journal of Systems Science and Systems Engineering 2013年第4期22卷 487-498页

作者： Xuanhua XU JoongHo AHN Xiaohong CHEN Yanju ZHOU School of Business Central South University College of Business Administration Seoul National University

The problem of measuring conflict in large-group decision making is examined with every decision preference expressed by multiple interval intuitionistic trapezoidal fuzzy numbers （IITFNs）. First, a distance measurement between two IITFNs is given and a function of conflict between two members of the large group is proposed. Second, members of the large group are clustered. A measurement model of group conflict, which is applied to aggregating large-group preferences, is then proposed by employing the conflict measure of clusters. Finally, a simulation example is presented to validate the models. These models can deal with the preference analysis and coordination of a large-group decision, and are thus applicable to emergency group decision making.

关键词： Interval intuitionistic trapezoidal fuzzy number large group decision making conflict measure

In-MOF-derived In_(2)S_(3)/Bi_(2)S_(3) heterojunction for enhanced photocatalytic hydrogen production

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Frontiers in Energy 2023年第5期17卷 654-663页

作者： Sibi LIU Yijin WANG Youzi ZHANG xu XIN Peng GUO Dongshan DENG Jahan B.GHASEMI Miao WANG Ruiling WANG xuanhua LI Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China School of Chemistry University College of ScienceUnversity of TehranTehran 14155-6455Iran

Transition metal sulfides are commonly studied as photocatalysts for water splitting in solar-to-fuel conversion.However,the effectiveness of these photoca-talysts is limited by the recombination and restricted light absorption capacity of carriers.In this paper,a broad spectrum responsive In_(2)S_(3)/Bi_(2)S_(3)heterojunction is cons-tructed by in-situ integrating Bi_(2)S_(3)with the In_(2)S_(3),derived from an In-MOF precursor,via the high-temperature sulfidation and solvothermal methods.Benefiting from the synergistic effect of wide-spectrum response,effective charge separation and transfer,and strong heterogeneous interfacial contacts,the In_(2)S_(3)/Bi_(2)S_(3)heterojunction demons-trates a rate of 0.71 mmol/(g∙h),which is 2.2 and 1.7 times as much as those of In_(2)S_(3)(0.32 mmol/(g∙h))and Bi_(2)S_(3)(0.41 mmol/(g∙h)),respectively.This paper provides a novel idea for rationally designing innovative heterojunc-tion photocatalysts of transition metal sulfides for photocatalytic hydrogen production.

关键词： photocatalytic hydrogen production wide-spectrum response metal sulfides MOFs derivative heterogeneous interfacial contact

基于复杂网络的大群体应急决策专家意见与信任信息融合方法及应用

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数据分析与知识发现 2022年第2期6卷 348-363页

作者：徐选华黄丽中南大学商学院长沙410083

【目的】提出一种信息融合方法以更全面地描述决策专家之间的复杂关系,并将其有效应用于大群体应急决策中。【方法】结合信息融合、复杂网络分析等方法,综合决策意见与信任信息捕获专家群体的复杂关系并构建关联网络,基于该网络实现群... 详细信息

【目的】提出一种信息融合方法以更全面地描述决策专家之间的复杂关系,并将其有效应用于大群体应急决策中。【方法】结合信息融合、复杂网络分析等方法,综合决策意见与信任信息捕获专家群体的复杂关系并构建关联网络,基于该网络实现群体聚类、专家权重求解和个性化共识达成。【结果】实现了复杂关系的可视化及其在大群体应急决策中的融合运用。案例分析表明,本方法在考虑专家意愿的同时,使得共识调整成本较传统方法降低约47%,共识效率提升40%。【局限】除信任及专家意见外,专家复杂关系还可从其他维度获取;信任需要专家额外提供。【结论】本研究丰富了群体关系的内涵,为社会网络环境下利用复杂关系支撑大群体决策提供了创新思路。

关键词：大群体应急决策复杂网络信任关系信息融合

Gadolinium-incorporated CsPbI_(2)Br for boosting efficiency and long-term stability of all-inorganic perovskite solar cells

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Journal of Energy Chemistry 2022年第7期31卷 9-17,I0001页

作者： Xingyu Pu Jiabao Yang Tong Wang Shuaici Cheng Qi Cao Junsong Zhao Hui Chen Yixin Zhang Tingting xu Ilhom Tojiboyev Hadi Salari xuanhua Li State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXian710072.ShaanxiChina Queen Mary University of London Engineering School Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina Institute Ion-Plasma and Laser Technologies Uzbekistan Academy of Sciences100125Durmon yuli 33TashkentUzbekistan Faculty of Physical Chemistry Shiraz UniversityShiraz 71345Iran

All-inorganic CsPbI_(2)Br perovskite solar cells(PSCs)have received extensive research interests recently.Nevertheless,their low efficiency and poor long-term stability are still obstacles for further commercial application.Herein,we demonstrate that high efficiency and exceptional long-term stability are realized by incorporating gadolinium(III)chloride(GdCl_(3))into the CsPbI_(2)Br perovskite film.The incorporation of GdCl_(3) enhances the Goldschmidt tolerance factor of CsPbI_(2)Br perovskite,yielding a dense perovskite film with small grains,thus the a-phase CsPbI_(2)Br is remarkably stabilized.Additionally,it is found that the GdCl_(3)-incorporated perovskite film achieves suppressed charge recombination and appropriate energy level alignment compared with the pristine CsPbI_(2)Br film.The noticeable increment in efficiency from14.01%(control PSC)to 16.24%is achieved for GdCl_(3)-incorporated PSC.Moreover,the nonencapsulated GdCl_(3)-incorporated PSC exhibits excellent environmental and thermal stability,remaining over 91%or90%of the original efficiency after 1200 h aging at 40%relative humidity or 480 h heating at 85℃ in nitrogen glove box respectively.The encapsulated GdCl_(3)-incorporated PSC presents an improved operational stability with over 88%of initial efficiency under maximum power point(MPP)tracking at 45℃ for1000 h.This work presents an effective ion-incorporation approach for boosting efficiency and long-term stability of all-inorganic PSCs.

关键词： All-inorganic perovskite CsPbI_(2)Br Gadolinium incorporation Power conversion efficiency Long-term stability

社会网络行为数据驱动的大群体应急决策共识模型

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系统工程与电子技术 2023年第7期45卷 2086-2097页

作者：徐选华肖婷中南大学商学院湖南长沙410083

针对大群体应急决策中决策参考信息不足和共识达成困难的问题,构建了一种由社会网络行为数据驱动的大群体应急决策共识模型。首先,针对决策参考信息不足的问题,提出基于公众行为大数据分析的属性挖掘方法。该方法将公众关注度作为数据... 详细信息

针对大群体应急决策中决策参考信息不足和共识达成困难的问题,构建了一种由社会网络行为数据驱动的大群体应急决策共识模型。首先,针对决策参考信息不足的问题,提出基于公众行为大数据分析的属性挖掘方法。该方法将公众关注度作为数据聚类标准,挖掘社交媒体数据中的公众关注主题和权重,将其作为决策参考信息,应用到大群体应急决策过程。其次,针对大群体共识达成困难的问题,建立了基于信任-相似分析的决策共识模型。该模型在专家社会网络聚类的基础上,引入自信系数和保留系数,设计共识反馈规则以调整专家偏好,提高了群体共识水平。最后,通过公共安全事件案例验证了所提模型的可行性和合理性。

关键词：社会网络行为数据大群体公共安全应急决策

Early Cretaceous Thrust and Nappe Tectonics in North Qilian Shan,Northern Tibetan Plateau:Evidence from Field Mapping,Geochronology,and Deep Structural Analysis

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Acta Geologica Sinica(English Edition) 2023年第4期97卷 1058-1077页

作者： HAN Lele DING Weicui CHEN xuanhua SHAO Zhaogang ZHANG Da XIAO Yongjun HE Chengguang WANG Zengzhen LI Bing ZHANG Yiping xu Shenglin WANG Ye School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China SinoProbe Center Chinese Academy of Geological Sciences and China Geological SurveyBeijing 100037China Exploration and Development Research Institute Shengli Oilfield CompanySinopecDongyingShandong 257000China Henan Institute of Geological Survey ZhengzhouHenan 450001China

The North Qilian Shan fold and thrust belt,located at the northern Tibetan Plateau and southern margin of the Hexi Corridor,is a key tectonic unit to decode the formation and expansion of the plateau.Previous studies emphasize the Cenozoic deformation due to the far-field response to the Indo-Asian collision,but the Mesozoic deformations are poorly constrained in this area.We conducted detailed field mapping,structural analysis,geochronology,and structural interpretation of deep seismic reflectional profiling and magnetotelluric(MT)sounding,to address the superposed results of the Mesozoic and Cenozoic deformation.The results recognized the North Qilian thrust and nappe system(NQTS),the root and the frontal belt are the North Qilian thrust(NQT),and the Yumu Shan klippe(YK),respectively.The middle belt is located between the NQT and the YK.Monzonitic granite zircon U-Pb dating from the middle belt yields an age of ca.415 Ma,which is similar to south NQT.The thrusting displacement is estimated at ca.48 km by structural interpretation of deep profiles.The timing is constrained in the early stage of the Early Cretaceous by the formation of simultaneous growth strata.We suggest that the NQTS has resulted from the far-field effect of the Lhasa-Qiangtang collision,and the Yumu Shan is uplifted by the superposed Cenozoic deformation.

关键词： geochronology structural analysis seismic reflectional and MT profiling Early Cretaceous North Qilian thrust and nappe system Tibetan Plateau