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Modelling of vehicle interaction behavior during discretionary lane-changing preparation process on freeway 被引量:1
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作者 Nie Jianqiang Zhang Jian Ran Bin 《Journal of Southeast University(English Edition)》 EI CAS 2018年第4期524-531,共8页
In order to increase the accuracy of microscopic traffic flow simulation,two acceleration models are presented to simulate car-following behaviors of the lane-changing vehicle and following putative vehicle during the... In order to increase the accuracy of microscopic traffic flow simulation,two acceleration models are presented to simulate car-following behaviors of the lane-changing vehicle and following putative vehicle during the discretionary lanechanging preparation( DLCP) process, respectively. The proposed acceleration models can reflect vehicle interaction characteristics. Samples used for describing the starting point and the ending point of DLCP are extracted from a real NGSIM vehicle trajectory data set. The acceleration model for a lanechanging vehicle is supposed to be a linear acceleration model.The acceleration model for the following putative vehicle is constructed by referring to the optimal velocity model,in which optimal velocity is defined as a linear function of the velocity of putative leading vehicle. Similar calibration,a hypothesis test and parameter sensitivity analysis were conducted on the acceleration model of the lane-changing vehicle and following putative vehicle,respectively. The validation results of the two proposed models suggest that the training and testing errors are acceptable compared with similar works on calibrations for car following models. The parameter sensitivity analysis shows that the subtle observed error does not lead to severe variations of car-following behaviors of the lane-changing vehicle and following putative vehicle. 展开更多
关键词 vehicle interaction behavior discretionary lane-changing preparation process lane-changing vehicle following putative vehicle optimal velocity model
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High-Order Soliton Solutions and Hybrid Behavior for the (2 + 1)-Dimensional Konopelchenko-Dubrovsky Equations
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作者 Xingying Li Yin Ji 《Journal of Applied Mathematics and Physics》 2024年第7期2452-2466,共15页
In this paper, the evolutionary behavior of N-solitons for a (2 + 1)-dimensional Konopelchenko-Dubrovsky equations is studied by using the Hirota bilinear method and the long wave limit method. Based on the N-soliton ... In this paper, the evolutionary behavior of N-solitons for a (2 + 1)-dimensional Konopelchenko-Dubrovsky equations is studied by using the Hirota bilinear method and the long wave limit method. Based on the N-soliton solution, we first study the evolution from N-soliton to T-order (T=1,2) breather wave solutions via the paired-complexification of parameters, and then we get the N-order rational solutions, M-order (M=1,2) lump solutions, and the hybrid behavior between a variety of different types of solitons combined with the parameter limit technique and the paired-complexification of parameters. Meanwhile, we also provide a large number of three-dimensional figures in order to better show the degeneration of the N-soliton and the interaction behavior between different N-solitons. 展开更多
关键词 Konopelchenko-Dubrovsky Equations Hirota Bilinear Method M-Order Lump Solutions High-Order Hybrid Solutions interaction behavior
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Understanding the Interaction Between Space and Behavior: A Review of Behavior Geography
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作者 Wang De Liu Jinxin(translated) 《China City Planning Review》 CSCD 2024年第3期88-89,共2页
Behavior Geography Authors: Chai Yanwei, Ta Na Year: 2022 Publisher: Southeast University Press ISBN: 9787564193508(320,000 characters, in Chinese) In the context of a fluid society and cities in transition, the dynam... Behavior Geography Authors: Chai Yanwei, Ta Na Year: 2022 Publisher: Southeast University Press ISBN: 9787564193508(320,000 characters, in Chinese) In the context of a fluid society and cities in transition, the dynamic relationship between humans and their environment has received considerable attention in the field of geography. 展开更多
关键词 A Review of behavior Geography Understanding the interaction Between Space and behavior
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Observation on the Effect of Parental Participation in Nursing Under the IMCHB Model in Neonatal Hypoxic-Ischemic Encephalopathy
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作者 Qin He 《Journal of Clinical and Nursing Research》 2024年第6期148-153,共6页
Objective:To investigate the clinical effects of parental participation in nursing under the Interaction Model of Client Health Behavior(IMCHB)model in neonatal hypoxic-ischemic encephalopathy(HIE).Methods:The First A... Objective:To investigate the clinical effects of parental participation in nursing under the Interaction Model of Client Health Behavior(IMCHB)model in neonatal hypoxic-ischemic encephalopathy(HIE).Methods:The First Affiliated Hospital of Gannan Medical University included 46 newborns with HIE admitted from October 2021 to October 2023 into the study population.They were divided into a control group and an observation group according to the random number table method,with the control group adopting routine nursing,and the observation group implementing parental participation in nursing under the IMCHB model.The indicators of physical,intellectual,and psychomotor development of the two groups were compared before and after nursing.Results:The physical,intellectual,and psychomotor development of the observation group was higher than that of the control group after 3 months of nursing,and the difference was statistically significant(P<0.05).Conclusion:The implementation of the IMCHB model of parental participation in the clinical care of HIE neonates can further promote their physical,intellectual,and psychomotor development. 展开更多
关键词 interaction Model of Client Health behavior model Parental participation nursing Neonatal hypoxic-ischemic encephalopathy
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Is Language Ability Acquired from its Interaction with Society or Innate?
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作者 张健 《科技信息》 2013年第6期230-231,共2页
On first language acquisition,there are three different theories: behaviorism,nativism and interactionism,all of which also presents the developing process of first language acquisition.The paper probes into the compa... On first language acquisition,there are three different theories: behaviorism,nativism and interactionism,all of which also presents the developing process of first language acquisition.The paper probes into the comparison of these three theories,centering on the problem: Is language ability acquired from its interaction with society or innate? In fact,it cannot be given a totally definite answer,for a lot of factors accounts for children's language development,such as prenatal and postnatal,physiological and subjective and environmental ones,etc.With the research development on one topic,other factors will be found. 展开更多
关键词 英语学习 学习方法 阅读知识 阅读材料
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Investigating the relationships between facets of work task and selection and query-related behavior 被引量:3
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作者 Yuelin LI 《Chinese Journal of Library and Information Science》 2012年第1期51-69,共19页
Purpose: This study aims to explore the relationships between different facets of work task and selection and query-related behavior.Design/methodology/approach:An experiment was conducted to explore the issue. The re... Purpose: This study aims to explore the relationships between different facets of work task and selection and query-related behavior.Design/methodology/approach:An experiment was conducted to explore the issue. The researcher recruited 24 participants and assigned six simulated work task situations to each of them. Each experiment lasted around 2 hours and was recorded by the software tool Morae.Findings: Time(frequency) and time(length) are more closely related to user’s selection and query-related behavior compared to the facet ‘process’ of work task. Knowledge level of work task topic, degree of work task difficulty, and subjective work task complexity are significantly correlated with selection and query-related behavior. Work task difficulty and work task complexity are different concepts. Subjective work task complexity, work task difficulty, and knowledge of work task topic are significantly correlated with user’s selection and query-related behavior.Research limitations/implications: The limitations of this study include a small sample size,limited work task situations, and possible spurious relationships. This study has implications in informing task-based information seeking/search/retrieval research and interactive information retrieval(IIR) systems design.Originality/values: Previous studies usually did not touch upon how different facets of work tasks affected interactive activities. Some studies examining task complexity and information behavior were concerned with how work tasks affect users’ behavior at information-seeking level, rather than at information search level. This study makes contribution to interactive information retrieval,task-based information search and retrieval, and personalization of IR. 展开更多
关键词 Work tasks Facets of work tasks Selection behavior Query-related behavior Interactive information search behavior
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Some Personal Comment About Behaviorist Approach
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作者 Jia Junmin 《天水师范学院学报》 1998年第1期66-68,72,共4页
How an articulated mammal learns a foreign language has been a mystery for many years to language researchers. Language scholars have put forward different ways to explain this problem. Yet all of them are not perfect... How an articulated mammal learns a foreign language has been a mystery for many years to language researchers. Language scholars have put forward different ways to explain this problem. Yet all of them are not perfect. Each of these theories has contributed both quantitively and qualitively to the different aspects of language learning. However, language learning and teaching doesn’t happen in a vaccum. It is affected by many factors. In vast rural areas in China, practically speaking, behaviorist approach fits in with the writer’s own experience. Some weaknesses of this approach are also discussed. Therefore what is important is to adapt, not to adopt blindly. 展开更多
关键词 behaviorISM NATIVISM COGNITIVISM interactionISM Inadequacies TEACHER talk optimum conditions
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Effect of organic binders on the activation and properties of indurated magnetite pellets 被引量:4
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作者 Cui Wang Chen-yang Xu +3 位作者 Zheng-jian Liu Yao-zu Wang Rong-rong Wang Li-ming Ma 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2021年第7期1145-1152,共8页
In the ironmaking process,the addition of an organic binder to replace a portion of bentonite has the potential to improve the per-formance of pellets.The interaction between original bentonite(OB)and organic binder w... In the ironmaking process,the addition of an organic binder to replace a portion of bentonite has the potential to improve the per-formance of pellets.The interaction between original bentonite(OB)and organic binder was investigated.Results indicated that the micromor-phology of organic composite bentonite(OCB)became porous and the infrared difference spectrum exhibited a curved shape.In addition,the residual burning rates of OB and organic binder were determined to be 82.72%and 2.30%,respectively.Finally,the influence of OCB on the properties of pellets was investigated.The compressive strength of OCB-added green pellets(14.7 N per pellet)was better than that of OB-ad-ded pellets(10.3 N per pellet).Moreover,the range of melting temperature of OCB-added green pellets(173℃)was narrower than that of OB-added pellets(198℃).The compressive strength of OCB-added green pellets increased from 2156 to 3156 N per pellet with the increase in roasting temperature from 1200 to 1250℃. 展开更多
关键词 PELLETS organic composite bentonite softening-melting property interaction behavior
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“晒文化”现象与青年休闲行为 被引量:11
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作者 王莉霞 相亲亲 《当代青年研究》 CSSCI 2016年第6期64-70,共7页
"晒"式行为已成为青年生活的一部分,这种以互联网技术为依托,借助自媒体平台将传统的休闲行为虚拟化,提供给"主我和客我"大量的信息分享,也使大众的休闲模式发生重大改变。通过社交媒体,青年借助"晒"的行... "晒"式行为已成为青年生活的一部分,这种以互联网技术为依托,借助自媒体平台将传统的休闲行为虚拟化,提供给"主我和客我"大量的信息分享,也使大众的休闲模式发生重大改变。通过社交媒体,青年借助"晒"的行为,展示自己的生活状态,进行交流和互动。"晒"是一种符号呈现,通过社交平台互动,影响人们内在心理和行为表现,渗入生活,进而成为一种社会现象。研究发现,青年"晒"休闲生活的行为具有符号化的特质,这种"晒"行为的传播机制是符号不断编码、解码以及与行为的相互影响过程,而其本身也是自我认知与社会共识达成的体现,是对归属感的自我诉求,以及自我角色的塑造过程。 展开更多
关键词 符号互动 晒文化 休闲行为 自我展示
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米德对莫里斯符号学的影响 被引量:5
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作者 张良林 《西南交通大学学报(社会科学版)》 CSSCI 2011年第5期1-7,共7页
莫里斯符号学思想以米德的社会行为主义为理论框架,并合理地吸收了其符号互动论观点;他们二人都承认语言符号的普遍性,并用相似的符号学方法证明了这一点;米德的"扮演他人角色"和"表意规约符号"等概念对莫里斯的符... 莫里斯符号学思想以米德的社会行为主义为理论框架,并合理地吸收了其符号互动论观点;他们二人都承认语言符号的普遍性,并用相似的符号学方法证明了这一点;米德的"扮演他人角色"和"表意规约符号"等概念对莫里斯的符号学思想产生了特别的影响。以历史的视角考察米德思想对莫里斯符号学思想的影响,有助于学界看清后者的理论渊源和看清美国符号学理论发展的脉络,并对国内符号学理论建设具有启迪作用。 展开更多
关键词 莫里斯 米德 符号学 社会行为主义 符号互动论 表意规约符号
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Insider Attack Detection Using Deep Belief Neural Network in Cloud Computing
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作者 A.S.Anakath R.Kannadasan +2 位作者 Niju P.Joseph P.Boominathan G.R.Sreekanth 《Computer Systems Science & Engineering》 SCIE EI 2022年第5期479-492,共14页
Cloud computing is a high network infrastructure where users,owners,third users,authorized users,and customers can access and store their information quickly.The use of cloud computing has realized the rapid increase ... Cloud computing is a high network infrastructure where users,owners,third users,authorized users,and customers can access and store their information quickly.The use of cloud computing has realized the rapid increase of information in every field and the need for a centralized location for processing efficiently.This cloud is nowadays highly affected by internal threats of the user.Sensitive applications such as banking,hospital,and business are more likely affected by real user threats.An intruder is presented as a user and set as a member of the network.After becoming an insider in the network,they will try to attack or steal sensitive data during information sharing or conversation.The major issue in today's technological development is identifying the insider threat in the cloud network.When data are lost,compromising cloud users is difficult.Privacy and security are not ensured,and then,the usage of the cloud is not trusted.Several solutions are available for the external security of the cloud network.However,insider or internal threats need to be addressed.In this research work,we focus on a solution for identifying an insider attack using the artificial intelligence technique.An insider attack is possible by using nodes of weak users’systems.They will log in using a weak user id,connect to a network,and pretend to be a trusted node.Then,they can easily attack and hack information as an insider,and identifying them is very difficult.These types of attacks need intelligent solutions.A machine learning approach is widely used for security issues.To date,the existing lags can classify the attackers accurately.This information hijacking process is very absurd,which motivates young researchers to provide a solution for internal threats.In our proposed work,we track the attackers using a user interaction behavior pattern and deep learning technique.The usage of mouse movements and clicks and keystrokes of the real user is stored in a database.The deep belief neural network is designed using a restricted Boltzmann machine(RBM)so that the layer of RBM communicates with the previous and subsequent layers.The result is evaluated using a Cooja simulator based on the cloud environment.The accuracy and F-measure are highly improved compared with when using the existing long short-term memory and support vector machine. 展开更多
关键词 Cloud computing security insider attack network security PRIVACY user interaction behavior deep belief neural network
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Integrability Tests and Some New Soliton Solutions of an Extended Potential Boiti-Leon-Manna-Pempinelli Equation
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作者 Miao Li Wei Tan Houping Dai 《Journal of Applied Mathematics and Physics》 2022年第10期2895-2905,共11页
This paper is devoted to the study of a (2 + 1)-dimensional extended Potential Boiti-Leon-Manna-Pempinelli equation. Firstly, By means of the standard Weiss Tabor Carnevale approach and Kruskal’s simplification, we p... This paper is devoted to the study of a (2 + 1)-dimensional extended Potential Boiti-Leon-Manna-Pempinelli equation. Firstly, By means of the standard Weiss Tabor Carnevale approach and Kruskal’s simplification, we prove the painlevé non integrability of the equation. Secondly, A new breather solution and lump type solution are obtained based on the parameter limit method and Hirota’s bilinear method. Besides, some interaction behavior between lump type solution and N-soliton solutions (N is any positive integer) are studied. We construct the existence theorem of the interaction solution and give the process of calculation and proof. We also give a concrete example to illustrate the effectiveness of the theorem, and some spatial structure figures are displayed to reflect the evolutionary behavior of the interaction solutions with the change of soliton number N and time t. 展开更多
关键词 BLMP Equation Lump Type Solution interaction behavior Parameter Limit Method Hirota’s Bilinear Method
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BA-GNN: Behavior-aware graph neural network for session-based recommendation
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作者 Yongquan LIANG Qiuyu SONG +2 位作者 Zhongying ZHAO Hui ZHOU Maoguo GONG 《Frontiers of Computer Science》 SCIE EI CSCD 2023年第6期135-144,共10页
Session-based recommendation is a popular research topic that aims to predict users’next possible interactive item by exploiting anonymous sessions.The existing studies mainly focus on making predictions by consideri... Session-based recommendation is a popular research topic that aims to predict users’next possible interactive item by exploiting anonymous sessions.The existing studies mainly focus on making predictions by considering users’single interactive behavior.Some recent efforts have been made to exploit multiple interactive behaviors,but they generally ignore the influences of different interactive behaviors and the noise in interactive sequences.To address these problems,we propose a behavior-aware graph neural network for session-based recommendation.First,different interactive sequences are modeled as directed graphs.Thus,the item representations are learned via graph neural networks.Then,a sparse self-attention module is designed to remove the noise in behavior sequences.Finally,the representations of different behavior sequences are aggregated with the gating mechanism to obtain the session representations.Experimental results on two public datasets show that our proposed method outperforms all competitive baselines.The source code is available at the website of GitHub. 展开更多
关键词 session-based recommendation multiple interactive behaviors graph neural networks
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School Boarding and Students'Prosocial Behaviors:Evidence from Rural China
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作者 Yunsen Li Guochang Zhao +1 位作者 Yunlu Li Liang Luo 《China & World Economy》 2023年第3期115-139,共25页
This study investigated the efects of boarding at school on students'prosocial behaviors in rural China using data from the National Children's Study of China.The instrumental variable(IV)approach was used to ... This study investigated the efects of boarding at school on students'prosocial behaviors in rural China using data from the National Children's Study of China.The instrumental variable(IV)approach was used to control for potential endogeneity,and the IVs were the proportion of boarding students in higher grades and the school area per student.The ordinary least squares and IV estimates showed that boarding students exhibited more prosocial behaviors,including compliance with rules,positive traits,and altruistic attitudes.These results were robust.Heterogeneity analyses suggested that students from low-income families,children who were not"left behind,"high-grade students,and female students were more likely to benefit from boarding.We found that these effects were primarily due to boarding students developing stronger feelings of trust and support from their peers and teachers and participating in more school-organized events and team activities. 展开更多
关键词 boarding at school formation of prosocial preference prosocial behaviors social interaction students in rural China
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Interaction phenomena between lump and solitary wave of a generalized (3+1)-dimensional variable-coefficient nonlinear-wave equation in liquid with gas bubbles
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作者 Jian-Guo Liu Wen-Hui Zhu +1 位作者 Yan He Ya-Kui Wu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2020年第8期18-26,共9页
In this paper, a generalized (3+1)-dimensional variable-coefficient nonlinear-wave equation is studied in liquid with gas bubbles. Based on the Hirota’s bilinear form and symbolic computation, lump and interaction so... In this paper, a generalized (3+1)-dimensional variable-coefficient nonlinear-wave equation is studied in liquid with gas bubbles. Based on the Hirota’s bilinear form and symbolic computation, lump and interaction solutions between lump and solitary wave are obtained,which include a periodic-shape lump solution, a parabolic-shape lump solution, a cubic-shape lump solution, interaction solutions between lump and one solitary wave, and between lump and two solitary waves. The spatial structures called the bright lump wave and the bright-dark lump wave are discussed. Interaction behaviors of two bright-dark lump waves and a periodic-shape bright lump wave are also presented. Their interactions are shown in some 3D plots. 展开更多
关键词 solitary wave lump wave variable-coefficient nonlinear-wave equation interaction behaviors
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Interactions between engineered nanoparticles and dissolved organic matter: A review on mechanisms and environmental effects 被引量:14
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作者 Sujuan Yu Jingfu Liu +1 位作者 Yongguang Yin Mohai Shen 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2018年第1期198-217,共20页
Dissolved organic matter(DOM) is ubiquitous in the environment and has high reactivity.Once engineered nanoparticles(ENPs) are released into natural systems, interactions of DOM with ENPs may significantly affect ... Dissolved organic matter(DOM) is ubiquitous in the environment and has high reactivity.Once engineered nanoparticles(ENPs) are released into natural systems, interactions of DOM with ENPs may significantly affect the fate and transport of ENPs, as well as the bioavailability and toxicity of ENPs to organisms. However, because of the complexity of DOM and the shortage of useful characterization methods, large knowledge gaps exist in our understanding of the interactions between DOM and ENPs. In this article, we systematically reviewed the interactions between DOM and ENPs, discussed the effects of DOM on the environmental behavior of ENPs, and described the changes in bioavailability and toxicity of ENPs caused by DOM. Critical evaluations of published references suggest further need for assessing and predicting the influences of DOM on the transport,transformation, bioavailability, and toxicity of ENPs in the environment. 展开更多
关键词 Dissolved organic matter Engineered nanoparticles interaction mechanisms Environmental behavior Toxicity Bioavailability
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A framework to evaluate whether to pool or separate behaviors in a multilayer network 被引量:1
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作者 Annemarie VAN DER MAREL Sanjay PRASHER +4 位作者 Chelsea CARMINITO Claire L.O'CONNELL Alexa PHILLIPS Bryan M.KLUEVER Elizabeth A.HOBSON 《Current Zoology》 SCIE CAS CSCD 2021年第1期101-111,共11页
A multilayer network approach combines different network layers,which are connected by interlayer edges,to create a single mathematical object.These networks can contain a variety of information types and represent di... A multilayer network approach combines different network layers,which are connected by interlayer edges,to create a single mathematical object.These networks can contain a variety of information types and represent different aspects of a system.However,the process for selecting which information to include is not always straightforward.Using data on 2 agonistic behaviors in a captive population of monk parakeets(Myiopsitta monachus),we developed a framework for investigating how pooling or splitting behaviors at the scale of dyadic relationships(between 2 individuals)affects individual-and group-level social properties.We designed 2 reference models to test whether randomizing the number of interactions across behavior types results in similar structural patterns as the observed data.Although the behaviors were correlated,the first reference model suggests that the 2 behaviors convey different information about some social properties and should therefore not be pooled.However,once we controlled for data sparsity,we found that the observed measures corresponded with those from the second reference model.Hence,our initial result may have been due to the unequal frequencies of each behavior.Overall,our findings support pooling the 2 behaviors.Awareness of how selected measurements can be affected by data properties is warranted,but nonetheless our framework disentangles these efforts and as a result can be used for myriad types of behaviors and questions.This framework will help researchers make informed and data-driven decisions about which behaviors to pool or separate,prior to using the data in subsequent multilayer network analyses. 展开更多
关键词 behavioral interactions monk parakeet Myiopsitta monachus network analysis social context social relationships
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Quality of experience evaluation of HTTP video streaming based on user interactive behaviors
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作者 Li Wenjing Yu Peng +3 位作者 Wang Ruiyi Feng Lei Dong Ouzhou Qiu Xuesong 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2017年第3期24-32,共9页
User interactive behaviors play a dual role during the hypertext transfer protocol (HTTP) video service: reflection and influence. However, they are seldom taken into account in practices. To this end, this paper p... User interactive behaviors play a dual role during the hypertext transfer protocol (HTTP) video service: reflection and influence. However, they are seldom taken into account in practices. To this end, this paper puts forward the user interactive behaviors, as subjective factors of quality of experience (QoE) from viewer level, to structure a comprehensive multilayer evaluation model based on classic network quality of service (QoS) and application QoS. First, dual roles of user behaviors are studied and the characteristics are extracted where the user experience is correlated with user interactive behaviors. Furthermore, we categorize QoE factors into three dimensions and build the metric system. Then we perform the subjective tests and investigate the relationships among network path quality, user behaviors, and QoE. Ultimately, we employ the back propagation neural network (BPNN) to validate our analysis and model. Through the simulation experiment of mathematical and BPNN, the dual effects of user interaction behaviors on the reflection and influence of QoE in the video stream are analyzed, and the QoE metric system and evaluation model are established. 展开更多
关键词 HTTP video streaming QOE user interactive behaviors BPNN
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Building trust networks in the absence of trust relations 被引量:2
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作者 Xin WANG Ying WANG Jian-hua GUO 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2017年第10期1591-1600,共10页
User-specified trust relations are often very sparse and dynamic, making them difficult to accurately predict from online social media. In addition, trust relations are usually unavailable for most social media platfo... User-specified trust relations are often very sparse and dynamic, making them difficult to accurately predict from online social media. In addition, trust relations are usually unavailable for most social media platforms.These issues pose a great challenge for predicting trust relations and further building trust networks. In this study,we investigate whether we can predict trust relations via a sparse learning model, and propose to build a trust network without trust relations using only pervasively available interaction data and homophily effect in an online world. In particular, we analyze the reliability of predicting trust relations by interaction behaviors, and provide a principled way to mathematically incorporate interaction behaviors and homophily effect in a novel framework,b Trust. Results of experiments on real-world datasets from Epinions and Ciao demonstrated the effectiveness of the proposed framework. Further experiments were conducted to understand the importance of interaction behaviors and homophily effect in building trust networks. 展开更多
关键词 Trust network Sparse learning Homophily effect interaction behaviors
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Anomaly Detection in Microblogging via Co-Clustering 被引量:1
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作者 杨武 申国伟 +3 位作者 王巍 宫良一 于淼 董国忠 《Journal of Computer Science & Technology》 SCIE EI CSCD 2015年第5期1097-1108,共12页
Traditional anomaly detection on microblogging mostly focuses on individual anomalous users or messages. Since anomalous users employ advanced intelligent means, the anomaly detection is greatly poor in performance. I... Traditional anomaly detection on microblogging mostly focuses on individual anomalous users or messages. Since anomalous users employ advanced intelligent means, the anomaly detection is greatly poor in performance. In this paper, we propose an innovative framework of anomaly detection based on bipartite graph and co-clustering. A bipartite graph between users and messages is built to model the homogeneous and heterogeneous interactions. The proposed co- clustering algorithm based on nonnegative matrix tri-factorization can detect anomalous users and messages simultaneously. The homogeneous relations modeled by the bipartite graph are used as constraints to improve the accuracy of the co- clustering algorithm. Experimental results show that the proposed scheme can detect individual and group anomalies with high accuracy on a Sina Weibo dataset. 展开更多
关键词 MICROBLOGGING anomaly detection nonnegative matrix tri-factorization user interaction behavior
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