Progress Is Not an Illusion     

Oren Harman 《Science & Education》2018,27(1-2):219-224

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Letters     

Seth Forman 《Academic Questions》2018,31(3):251-251

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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   

Kuhn’s Image of Science     

William Rehg 《Metascience》2018,27(2):213-215

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Disconnect: Kentucky and the Political Ideology of its Public Universities     

Ben Foster 《Academic Questions》2018,31(3):313-321

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The Evolution of U.S. Museums and Science Centers as Informal Learning Environments     

Renee M. Clary 《Science & Education》2018,27(3-4):371-377

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The Historical Heart of Atmospheric Science     

Anthony J. Sadar 《Science & Education》2018,27(1-2):233-235

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高校110m栏课余训练初期易被忽略的问题研究     

王荣伟  周庆瑜 《湖北体育科技》2003,22(1):133-134

作在多年实践中发现，教练员为了应付比赛，忽于求成，在训练初期普遍存在着许多易被忽视的问题，制约着运动成绩的提高。通过对110m跨栏技术特征、专项素质要求和一般高校课余训练的特点、现状分析，提出了相应的对策。  相似文献   

珍泉集萃（八）——共少半釿、半釿、半釿之重     

戎畋松 《收藏》2006,(11):136-137

共少半釿 战国暑期魏铸币，流通于三晋、两周地区。共：古国名，西周时为共伯封国，共伯曾入列三公之秩。《左传》：隐公元年（前722年），“太叔出奔共”。春秋时期共为卫国兼并，成为卫别邑；战国时卫备受强邻魏国侵扰，前254年，卫名存实亡，成为魏之附庸，领地独剩濮阳，共吧归魏占有，其地望在今河南辉县西。  相似文献   

Fußball in Geschichte und Gesellschaft     

Tina Nobis 《Sportwissenschaft》2004,34(4):510-513

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