Tracking user-role evolution via topic modeling in community question answering     

Chaogang Fu 《Information processing & management》2019,56(6):102075

Community question answering (CQA) services that enable users to ask and answer questions are popular on the internet. Each user can simultaneously play the roles of asker and answerer. Some work has aimed to model the roles of users for potential applications in CQA. However, the dynamic characteristics of user roles have not been addressed. User roles vary over time. This paper explores user representation by tracking user-role evolution, which could enable several potential applications in CQA, such as question recommendation. We believe this paper is the first to track user-role evolution and investigate its influence on the performance of question recommendation in CQA. Moreover, we propose a time-aware role model (TRM) to effectively track user-role evolution. With different independence assumptions, two variants of TRM are developed. Finally, we present the TRM-based approach to question recommendation, which provides a mechanism to naturally integrate the user-role evolution with content relevance between the answerer and the question into a unified probabilistic framework. Experiments using real-world data from Stack Overflow show that (1) the TRM is valid for tracking user-role evolution, and (2) compared with baselines utilizing role based methods, our TRM-based approach consistently and significantly improves the performance of question recommendation. Hence, our approach could enable several potential applications in CQA.  相似文献   

Reimagining Newsroom Collaboration: How Two European News Nonprofits Are Inviting Citizens In     

Magda Konieczna 《Journalism Practice》2020,14(5):592-607

ABSTRACT

News nonprofits in the U.S. have been proliferating over 15 years as a way of addressing troubles in the business model for news. For these newsrooms, collaboration, with each other and with mainstream news, has emerged as a key way to build readership and attain relevance in a crowded media space. Still, past research has told us that the strong connection to mainstream news has constrained these organizations’ critique of journalism. In Europe, nonprofit news remains nascent and represents a response to declining trust in and engagement with journalism, and rising populism across the continent. Against this very different context, this study examines two players at the forefront of the European news nonprofit movement. It demonstrates the path dependency inherent in the origins of these organizations: In Europe, they are a response to a different societal change, and thus developed rather differently than did their peers in the United States, with a focus on redefining the idea of collaboration and the role of their audiences by seeing citizens as collaborators, both in the creation and in the dissemination of news. By seeing citizens as collaborators, not just readers, they work to empower and build news audiences as well as participants.  相似文献   

Proclaiming Library Worth in a Program Prioritization Process at a Mid-Sized Public University     

Michelle J. Oh  Robin J. Harris  Lisa C. Wallis 《图书馆管理杂志》2020,60(3):250-262

Abstract

In an economic climate when colleges can no longer presume that legislators see institutions of higher learning as tacit public goods, institutions around the country are facing budget cuts. This article presents a case study of the experience of a mid-sized public state university and its Library in a budget crisis undergoing a university-wide program prioritization process. The authors review the process of writing three reports on the Library’s value, along with the approach to engaging staff in the process including a retreat. This article raises questions about what every library should consider assessing and provide tools for libraries navigating similar terrain.  相似文献   

流动人口:社会体育的新课题--来自调研中的思考   总被引：17，自引：0，他引：17  

吕树庭  王铮  张宏  王菁  陈小英  徐光飞 《广州体育学院学报》2003,23(1):1-4

体育从来都不是游离于社会而孤立向前发展的，社会的每一重大进步，几乎都可以在体育中找到它所带来的积极“产物”。同样，社会在发展过程中所出现的社会问题，也将会以不同的方式折射到体育中来，“流动人口”带给社会体育的挑战正是这一折射的反映。本的思考，缘起于调研中的一组数据，随后由潮起潮涌的今日之民工流动，引伸出本的主题——“流动人口：社会体育的新课题”，并围绕主题阐述了流动人口给城乡体育带来的挑战，以及应对挑战的对策和建议。  相似文献   

学校体育是社区体育发展的依托   总被引：7，自引：0，他引：7  

郭琼珠黄景东  林群勋 《福建体育科技》2004,23(3):57-60

我国社区体育建设还处于初级阶段,体育场地设施、体育师资、体育管理人才等资源比较匮乏,许多因素制约了社区体育建设发展的步伐。而学校体育场地设施和师资力量等比较丰富,且没有得到充分的开发利用,学校体育资源浪费现象普遍存在。现阶段大力推进社区体育的建设和发展,提高全民健康水平,还需要依托辖区内学校丰富的体育资源来促进社区体育的发展。  相似文献   

基于学习共同体的《教育技术学导论》——课程设计初探     

李慧迎 《现代教育技术》2007,17(2):23-26

文章简要地分析了教育技术导论课程的特点及其在目前的教学中存在的问题,提出以学习共同体作为学习组织形式开展教学,既可以丰富课堂教学形式,也能通过师生及同伴之间的互动,促进学习者独立思考,逐步建构自己对教育技术的理解。  相似文献   

社区体育的起点研究     

王锋  许惠玲  许仲槐 《广州体育学院学报》2002,22(4):21-23

为研究科学合理地划分社区体育，不失时机地抓好社区体育的起点问题，在调查我省社区体育建设的初步实践基础上，用调查访问法和因素分析法，对目前可行的社区体育的几种类型进行科学论证，提出了结合当前各地社区体育的实际，可供具体优选和应用的几种社区体育的类型。  相似文献   

图书馆最佳参考咨询服务模式探析   总被引：23，自引：1，他引：22  

谢志佐 《图书馆杂志》2003,22(5):19-21

本文对参考咨询服务的产生、价值和服务模式作了简要的论述，指出不同类型的图书馆可采用不同的服务模式，最佳的参考咨询服务模式只能在实践中逐步形成和完善。  相似文献   

福州市社区体育可持续发展的模式   总被引：4，自引：0，他引：4  

陈伟霖  朱庆 《福建体育科技》2003,22(3):12-14

以福州市社区体育研究为切入点 ,进行分析论证。根据社区体育的现有基础 ,良好态势 ,阐述了构建社区体育可持续发展模式的依据 ,设计出基本框架 ,提出模式的 5种思路 ,为发展城市社区体育提供理论和决策的依据。  相似文献   

我国城市社区体育资源的现状与开发对策研究   总被引：6，自引：0，他引：6  

袁广锋 《首都体育学院学报》2003,15(4):25-27,52

运用文献资料、调查等方法，对我国城市社区体育资源的现状进行了研究。结果表明：我国城市社区体育资源存在着社会体育指导员数量和水平偏低、活动场地不足、运动项目单一、对自然地理资源开发不够等问题，建议通过提高政府和社区居民的资源开发意识、完善和开通社会体育指导员培养与提高的渠道、社区体育和学校体育及单位体育一体化、运动项目多样化等途径加强社区体育资源的开发。研究旨在为有关部门制定城市社区体育资源开发对策提供参考依据。  相似文献