Identification of highly-cited papers using topic-model-based and bibliometric features: the consideration of keyword popularity     

《Journal of Informetrics》2020,14(1):101004

The number of received citations have been used as an indicator of the impact of academic publications. Developing tools to find papers that have the potential to become highly-cited has recently attracted increasing scientific attention. Topics of concern by scholars may change over time in accordance with research trends, resulting in changes in received citations. Author-defined keywords, title and abstract provide valuable information about a research article. This study performs a latent Dirichlet allocation technique to extract topics and keywords from articles; five keyword popularity (KP) features are defined as indicators of emerging trends of articles. Binary classification models are utilized to predict papers that were highly-cited or less highly-cited by a number of supervised learning techniques. We empirically compare KP features of articles with other commonly used journal-related and author-related features proposed in previous studies. The results show that, with KP features, the prediction models are more effective than those with journal and/or author features, especially in the management information system discipline.  相似文献   

Application of machine learning techniques to assess the trends and alignment of the funded research output     

《Journal of Informetrics》2020,14(2):101018

Research and development activities are regarded as one of the most influencing factors of the future of a country. Large investments in research can yield a tremendous outcome in terms of a country’s overall wealth and strength. However, public financial resources of countries are often limited which calls for a wise and targeted investment. Scientific publications are considered as one of the main outputs of research investment. Although the general trend of scientific publications is increasing, a detailed analysis is required to monitor the research trends and assess whether they are in line with the top research priorities of the country. Such focused monitoring can shed light on scientific activities evolution as well as the formation of new research areas, thus helping governments to adjust priorities, if required. But monitoring the output of the funded research manually is not only very expensive and difficult, it is also subjective. Using structural topic models, in this paper we evaluated the trends in academic research performed by federally funded Canadian researchers during the time-frame of 2000–2018, covering more than 140,000 research publications. The proposed approach makes it possible to objectively and systematically monitor research projects, or any other set of documents related to research activities such as funding proposals, at large-scale. Our results confirm the accordance between the performed federally funded research projects and the top research priorities of Canada.  相似文献   

我国馆校结合领域研究热点及发展趋势——基于共词分析法的可视化研究          下载免费PDF全文

方慧玲  周青青  沈甸 《自然科学博物馆研究》2020,(3):5-16

深度认识国内馆校结合领域研究的主题和发展趋势,不仅有利于研究者更加详细、清楚地了解国内馆校结合发展的最新动态,也有利于推动我国馆校结合的发展。研究结果表明,我国馆校结合领域研究主要集中在馆校结合中的博物馆角色研究和馆校结合的结合特征研究两大方面,其中馆校结合的结合特征研究又可分成六个方面:馆校结合教育课程建设;馆校结合课程的教育学思考;馆校结合教育模式;馆校结合相关教育类型;馆校结合机制与策略;馆校结合现状。我国馆校结合领域研究的发展趋势为:奠定博物馆在馆校结合中的重要作用;馆校结合机制的研究日趋增加;更多体现馆校结合课程中的教育学理念;完善馆校结合评价体系。  相似文献   

Extending WHIRL with background knowledge for improved text classification     

Sarah Zelikovitz  William W. Cohen  Haym Hirsh 《Information Retrieval》2007,10(1):35-67

Intelligent use of the many diverse forms of data available on the Internet requires new tools for managing and manipulating heterogeneous forms of information. This paper uses WHIRL, an extension of relational databases that can manipulate textual data using statistical similarity measures developed by the information retrieval community. We show that although WHIRL is designed for more general similarity-based reasoning tasks, it is competitive with mature systems designed explicitly for inductive classification. In particular, WHIRL is well suited for combining different sources of knowledge in the classification process. We show on a diverse set of tasks that the use of appropriate sets of unlabeled background knowledge often decreases error rates, particularly if the number of examples or the size of the strings in the training set is small. This is especially useful when labeling text is a labor-intensive job and when there is a large amount of information available about a particular problem on the World Wide Web.

Haym HirshEmail:

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二语习得中"心理词典"的建构及策略研究     

胡雅宁 《培训与研究》2007,24(3):80-82

心理词典的概念自20世纪60年代由Treisman提出后,90年代后已被广泛地运用于二语习得研究中.本文围绕二语习得中双语心理词典,对如何促进二语习得中"心理词典"的建构及如何形成策略进行了研究和评述,以期对实际的学习和教学提供帮助.  相似文献   

浅谈如何消除英语学习中的情感障碍     

韩晓红 《辽宁科技学院学报》2007,9(4):47-47,50

研究了情感障碍的主要表现方面.并探讨了消除英语学习中的情感障碍的方法.尊重学生,公平地对待每一名学生并创造轻松的英语学习环境.  相似文献   

在高职英语教学中加强对学生学习策略的指导     

王少杰 《辽宁科技学院学报》2007,9(3):45-46

文章从英语学习策略是影响英语学习成功与否的一个十分重要的因素谈起,阐述了学习策略的定义及国内外学者对它进行的分类.主要探计了目前国内高职学生的英语学习的现状,希望能通过教师对适合高职学生学习策略的训练和指导,提高高职学生英语学习效率和质量.  相似文献   

综合英语中的学习趣味性与学习动机的提高     

罗丽莉 《宁波教育学院学报》2007,9(6):65-67

动机是指学习某种语言的愿望及为此付出的努力和对学习某种语言所持的综合态度。当前,综合英语授课仍以教师讲授为主,教师花大量时间通过例句来讲解语言点、句法和课文内容,所以课堂气氛沉闷,往往是老师在唱"独角戏"。教师若能在教学过程中穿插一些趣味教学法,将能起到调动学生学习动机的作用,帮助老师提高课堂学习效率。  相似文献   

大学英语课堂“内外互动”模式下教师角色的转换     

胡春晓 《宁波教育学院学报》2007,9(5):46-49

在网络和多媒体时代,大学英语教学具有新的特征。教师的角色与功能也相应转型,以适应教学模式的发展。大学英语课堂"内外互动"模式就是一次在建构主义学习理论的指导下进行的提高大学生英语综合能力的尝试。详细阐述了教师在这一特定教学环境中的角色转换和角色定位的相关问题,并对教师如何适应新角色提出了建议,以促进"内外互动"模式的开展和教学质量的提高。  相似文献   

Providing Bottom-Up Support to Middle School Science Teachers’ Reform Efforts in Using Inquiry-Based Kits     

Mark T. Jones  Charles J. Eick 《Journal of Science Teacher Education》2007,18(6):913-934

Middle grades science teachers need professional support in practice as they implement new inquiry-based science. Professional development schools can provide this bottom-up support through connecting preservice and inservice teacher education programs in classroom practice. In this study, coteaching arrangements with secondary science education majors provided additional teachers in the classroom to support a materials-rich curriculum and the needed associated pedagogies. Science education majors provided needed assistance in troubleshooting difficulties with the new curriculum. They also provided needed content knowledge to support inquiry, along with creating moments and space for teachers to reflect on inquiry practice. Ongoing assistance by preservice teachers allowed inservice teachers to progress from logistical concerns in implementing kit curriculum to concerns regarding student learning and the supporting professional development.

Charles J. EickEmail:

  相似文献