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Loss Aware Feature Attention Mechanism for Class and Feature Imbalance Issue

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Computers, Materials & Continua 2025年第1期82卷 751-775页

作者： Yuewei Wu Ruiling Fu Tongtong Xing Fulian Yin College of Information and communication Engineering Communication University of ChinaBeijing100024China State Key Laboratory of media Convergence and communication Communication University of ChinaBeijing100024China

In the Internet era,recommendation systems play a crucial role in helping users find relevant information from large *** imbalance is known to severely affect data quality,and therefore reduce the performance of recommendation *** to the imbalance,machine learning algorithms tend to classify inputs into the positive(majority)class every time to achieve high prediction *** can be categorized such as by features and classes,but most studies consider only class *** this paper,we propose a recommendation system that can integrate multiple networks to adapt to a large number of imbalanced features and can deal with highly skewed and imbalanced datasets through a loss *** propose a loss aware feature attention mechanism(LAFAM)to solve the issue of feature *** network incorporates an attention mechanism and uses multiple sub-networks to classify and learn *** better results,the network can learn the weights of sub-networks and assign higher weights to important *** propose suppression loss to address class imbalance,which favors negative loss by penalizing positive loss,and pays more attention to sample points near the decision *** on two large-scale datasets verify that the performance of the proposed system is greatly improved compared to baseline methods.

关键词： Imbalanced data deep learning e-commerce recommendation loss function big data analysis

Unmasking Social Robots’Camouflage:A GNN-Random Forest Framework for Enhanced Detection

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Computers, Materials & Continua 2025年第1期82卷 467-483页

作者： Weijian Fan Chunhua Wang Xiao Han Chichen Lin School of Data Science and Intelligent media Communication University of ChinaBeijing100024China School of Computer and Cyber Sciences Communication University of ChinaBeijing100024China Institute of communication Studies Communication University of ChinaBeijing100024China State Key Laboratory of media Convergence and communication Communication University of ChinaBeijing100024China

The proliferation of robot accounts on social media platforms has posed a significant negative impact,necessitating robust measures to counter network anomalies and safeguard content *** robot detection has emerged as a pivotal yet intricate task,aimed at mitigating the dissemination of misleading *** graphbased approaches have attained remarkable performance in this realm,they grapple with a fundamental limitation:the homogeneity assumption in graph convolution allows social robots to stealthily evade detection by mingling with genuine human *** unravel this challenge and thwart the camouflage tactics,this work proposed an innovative social robot detection framework based on enhanced HOmogeneity and Random Forest(HORFBot).At the core of HORFBot lies a homogeneous graph enhancement strategy,intricately woven with edge-removal techniques,tometiculously dissect the graph intomultiple revealing ***,leveraging the power of contrastive learning,the proposed methodology meticulously trains multiple graph convolutional networks,each honed to discern nuances within these tailored *** culminating stage involves the fusion of these feature-rich base classifiers,harmoniously aggregating their insights to produce a comprehensive detection *** experiments on three social robot detection datasets have shown that this method effectively improves the accuracy of social robot detection and outperforms comparative methods.

关键词： Social robot detection graph neural networks random forest homophily heterophily

Teaching Team Construction and Teaching Reform of the School of communication Under the Background of New Liberal Arts - Taking Sichuan University of media and communications as an Example

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Journal of Contemporary Educational Research 2022年第1期6卷 109-114页

作者： Jialin Jin Dandan Ren College of communication and Management Sichuan University of Media and CommunicationsChengdu 611745Sichuan ProvinceChina School of Finance and Trade Management Chengdu Industry and Trade CollegeChengdu 611745Sichuan ProvinceChina

Under the background of new liberal arts,in order to run a major well as well as highlight its characteristics and advantages,private colleges and universities cannot do without the construction of professional teaching teams and teaching *** Sichuan University of media and communication as an example,a series of explorations and practices has been carried out from the aspects of professional team construction,personnel training objectives,professional curriculum system,professional teaching mode,and professional teaching quality,in which good results have been *** this basis,a training base for journalism and communication talents serving the whole Sichuan Province and even the western region is constructed,so that the results of the project have a certain demonstration and promotion value for the construction and development of similar majors in new institutions of higher learning in Sichuan Province.

关键词： New liberal arts communication Teaching team Teaching reform Talent training program Curriculum system

Investigation on optical sinc-shaped Nyquist pulse generation based on external modulation

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Optoelectronics Letters 2025年

作者： YUAN Jin XU Xiuxiu State Key Laboratory of media Convergence and communication， communication University of China

In this paper， a scheme for generating sinc-shaped optical Nyquist pulses based on external modulation is proposed. First， five flat optical frequency comb (OFC) lines are generated by a dual-parallel Mach-Zehnder modulator (DP-MZM) for optical carrier phase cancellation interference. Then， the phase-locked OFC is split into two paths， one of which is transmitted to a single-drive Mach-Zehnder modulator (SD-MZM) for the modulation of the even-order side-band suppression， and the other is used to remodulate the signal in order to obtain equally spaced comb lines. Eventually， equal frequency spaced phase-locked 15-line OFCs are generated and extremely narrow over-zero width Nyquist pulses are realized at 2.5GHz， 5GHz， 10GHz and 20GHz. The root-mean-square error (RMSE) is calculated for the generated Nyquist pulses which enables the verification of the signal quality.

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The Effect of New media on Cross-Cultural communication Under the Background of“Internet+”

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Journal of Contemporary Educational Research 2021年第11期5卷 130-133页

作者： Ye Chen School of media and communication Guangzhou Huashang CollegeGuangzhou 511300Guangdong ProvinceChina

The rapid development of economy in China has brought development opportunities to the internet *** the continuous advancement of information technology,new media has also emerged,offering more convenient and efficient ways to the dissemination and exchange of *** the same time,the spread of new media has become more diversified,being more in line with the current needs of people for browsing *** cultural exchanges among various ethnic groups in China and even between countries around the world are constantly *** the differences in culture,it is necessary to have proper guidance in order to reduce conflicts among different *** article examines the cross-cultural communication effect of new media based on“Internet+”and provides references for cross-cultural communication.

关键词： Internet+ New media Cross-cultural communication

Social media Techno-Discursive Design,Affective communication and Contemporary Politics

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Fudan Journal of the Humanities and Social Sciences 2018年第4期11卷 427-442页

作者： Majid KhosraviNik Digital media and Discourse Studies media CultureHeritageSchool of Arts and Cultures Armstrong BuildingUniversity of NewcastleNewcastle upon Tyne NEt 7RUUK

The paper examines the intersection of technological design of Social media communication,the notion of post-politics-affective turn in contemporary (Western)societies and the rise of populism as a trend in political communi- *** on conceptualizations for a Social media approach to a broadly defined 'critical discourse studies framework (KhosraviNik,in:Kalyango and Kopytowska (eds)Why discourse matters:negotiating identity in the mediatized world,Peter Lang,New York,2014,in:Flowerdew and Richardson, Routledge handbook of critical discourse studies,Routledge,London,2017b),the paper attempts to integrate discussions on affective nature of communication in participatory web ecology and consequences of algorithmic regimentation of meaning bearing resources (e.g.,news and entertainment)on Social media. Issues around quality and distribution of digital discursive practices and their relations to traditional perceptions of rational politics,within the intemalised ethos of visibility-as-legitimacy,are critically elaborated and *** the rise of fight wing populism (e.g.,Trump presidency,Brexit vote)should primarily be explicated within qualities of the context on the ground,i.e.,the deliberate and well-orchestrated misplacement of real grievances in society through discursive operation and manipulation (KhosraviNik in Insight Turk 19(3):53-68,2017a),it is equally important to criticaUy elaborate the function and consequences of (digital)media practices as a main part of this socialization *** overall argument here is that the hyper-normalization and triumph of neo-liberal rationality together with new media technological affordances, design and requirements have created a momentum for the growth of haphazard populist politics,i.e.,the valorization of affective relevance over rational significance.

关键词： Populism Algorithms Social media politics Digital discourse Critical discourse studies

Medicine together with humanities and media: An MHM model to move forward for health communication studies

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International Journal of Nursing Sciences 2020年第S1期7卷 1-3页

作者： Zhenyi Li Jing Xu School of communication and Culture Royal Roads UniversityCanada School of Journalism and communication Peking UniversityChina

When Wilbur Schramm attempted to connect the established departments of journalism and speech into a new discipline called"communication studies",his invitation was criticized as being without a core set of theories and methodologies and the field of"communication studies"was viewed as too undefined,all-inclusive,and even chaotic to justify its standing as a discipline at all[1].Today,most of these doubts and critics disappeared when we witness the 80-year fruitful development of the"communication studies".Schramm titled his seminal book"Men&Women,Messages and media"to summarize and highlight the necessity of including multiple disciplines to participate the"communication studies"[2].

关键词： doubt communication media

Analysis of communication Model of Chinese Traditional Culture in the New media Era

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学术界 2020年第5期 201-209页

作者： Xing Nian Liu Hao School of Journalism and communication Sichuan International Studies University Chongqing 400031

Nowadays,the communication of traditional culture is facing various challenges,including limitations of traditional culture itself,decrease of inheritors,poor construction of structure,and heterization of connotation,as well as conflicts between Chinese and foreign cultures in the context of *** media has provided more opportunities for the communication of outstanding Chinese traditional *** paper analyzed the role of new media in completing the structure and expanding the scope of communication of outstanding Chinese traditional culture,and proposed strategy for optimizing the communication route from the perspective of improving environment,changing content,and adjusting *** contributions of new media to the communication of Chinese traditional culture should be highly appreciated.

关键词： new media Chinese traditional culture communication model

Energy Absorption Diagrams of Multi-layer Corrugated Boards

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Journal of Wuhan University of Technology(Materials Science) 2010年第1期25卷 58-61页

作者：王冬梅 School of media and communication Shenzhen Polytechnic

Based on the static compression experiments, the compressive stress-strain curve of multi-layer corrugated boards is simplified into three sections of linear elasticity, sub-buckling going with local collapse and densification. By considering the structure factors of multi-layer corrugated boards, the energy absorption model is obtained and characterized by the structure factors of corrugated cell-wall. The model is standardized by the solid modulus and it is universal for corrugated structures of different basis material. In the liner-elastic section, with the increase of the load, the energy absorption per unit volume of multi-layer corrugated boards gradually increases; in the sub-buckling section going with local collapse, the compression resistance of multi-layer corrugated boards goes on under a nearly constant load, but the energy absorption per unit volume rapidly increases with the increase of the compression strain. It is shown as an ascending curve in the energy absorption diagram. In the densification section, the corrugated sandwich core has no energy absorption capability. A good consistency is achieved between theoretical and experimental energy absorption curves. In designing the cushioning package, the cushioning properties can be evaluated by the theoretical model without more experiments. The suggested method to develop the energy absorption diagram for corrugated boards can be used to characterize the cushioning properties and optimize the structures of corrugated sandwich structures.

关键词： multi-layer corrugated boards stress strain curve energy absorption diagram modelling