共查询到20条相似文献，搜索用时 500 毫秒
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基于引文的参考文献评价功能的实现及其正确途径 总被引：1，自引：0，他引：1
引文是参考文献析出信息的直接引语或间接引语。参考文献具有学术论文评价、科技期刊评价、作者水平评判的功能及作用。其实现要以正确引文为基础,依赖于对正确引文的定性与定量分析。切实保证引文的正确性是发挥参考文献客观、公正评价作用的基础;其正确途径是从微观层面审视引文的关联性、准确性、适当性、规范性以及引证效果等,从内容、形式、数量、质量等方面进行细致的综合考量。 相似文献
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[目的/意义] 探索期刊论文科学数据引用特征与规律不仅有助于描述学科领域对科学数据的利用情况，还能够揭示学术成果表达中的数据引用模式。[方法/过程] 以我国图书情报领域6种期刊2017年与2018年第一期刊载论文为样本，结合国家标准《信息技术科学数据引用》的引用元素，采用内容分析法从9个维度对样本论文的科学数据引用行为进行数据编码，应用统计学方法描述图书情报领域期刊论文科学数据引用特征并探索不同维度特征间的关联关系。[结果/结论] 图书情报领域期刊论文广泛引用来自国内外的统计整理类科学数据，对期刊论文中个人研究科学数据的引用量较大；科学数据引用标注方式与科学数据类型存在一定对应关系，但多样化的标注方式缺乏统一性；二手引用现象较为突出，二手引用程度与科学数据创建者类型相关。 相似文献
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[目的/意义]引用语境是科学论文中包含引用的句子,是对引文的描述性或评价性文字。通过提取和分析引用语境中的线索词,可以了解引用语境的一般特征。[方法/过程]以Journal of Informetrics（JOI）期刊为例,选取人称代词、行为动词和连接词三类常用的线索词,分别计算它们在引用语境中的频次、占比和排序。通过比较各类线索词在引用语境和非引用语境中的存在度,识别引用语境中的常用句型和论证模式。[结果/结论]在JOI期刊中,引用语境主要表现出如下特点：侧重于第一人称和第三人称论述,既展现他人的工作,也展现作者的研究;偏重于研究方法类引用,常用的行为动词为"use"base"和"study";强调通过转折和列举等逻辑方式进行论证,最常用的连接词位"also"和"but"。分析引用语境中的线索词,对于更好地理解科学论文中的引用的功能和动机具有重要的价值和意义。 相似文献
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Objective:This study compares two maps of biomedical sciences using Medical Subject Headings (MeSH) term co-assignments versus MeSH terms of citing/cited articles and reveals similarities and differences between the two approaches.Methods:MeSH terms assigned to 397,475 journal articles published in 2015, as well as their 4,632,992 cited references, were retrieved from Web of Science and MEDLINE databases, respectively, which formed over 7 million MeSH co-assignments and nearly 18 million direct citation pairs. We generated six network visualizations of biomedical science at three levels using Gephi software based on these MeSH co-assignments and citation pairs.Results:The MeSH co-assignment map contained more nodes and edges, as MeSH co-assignments cover all medical topics discussed in articles. By contrast, the MeSH citation map contained fewer but larger nodes and wider edges, as citation links indicate connections to two similar medical topics.Conclusion:These two types of maps emphasize different aspects of biomedical sciences, with MeSH co-assignment maps focusing on the relationship between topics in different categories and MeSH direct citation maps providing insights into relationships between topics in the same or similar category. 相似文献
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高Altmetrics指标科技论文学术影响力研究 总被引：9，自引：0，他引：9
引入"公平性测试"方法以消除时间窗口对被引次数的影响。以高Altmetrics指标论文作为样本,选取与样本论文发表在同一期刊同一期上前后两篇论文作为参照。利用Altmetric.com、Web of Science分别获取273篇样本及参照论文的Altmetric分数、底层数据值和被引用次数。通过比较分析后发现:Altmetrics和引文数两种指标反映出读者对文献的不同关注方向,底层数据源中大众媒体对于Altmetric分数的影响最明显,高Altmetrics指标论文同时具有较高的学术影响力。作为一种早期指标,高Altmetrics指标在一定程度上能够被视作文章在未来获得高被引的风向标。 相似文献
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学术论文中的引文失范问题刍议 总被引：1，自引：0，他引：1
不同的引用动因和目的导致各种各样的引文失范。引文的标注形式和主体内容决定了引文的形式失范和内容失范。同时,学术道德规范的缺失又引发大量的虚假模糊引文。厘清引文的内涵与外延以及它与参考文献的联系与区别,正确对待现有学术标准和规范,并在运用中使之日臻完善;责任编辑应树立正确的引文价值观,恪守职业操行,公正、合理、专业、规范地处理引文问题;作者要掌握正确应用引文的原则与方法,增强文献情报利用的能力,避免"主观故意"的引文失范。 相似文献
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The outgrow index measures to which extent an article outgrows – in terms of citations – the references on which it is based. In this article, three types of time series of outgrow indices and one outgrow index matrix are introduced. Examples of these time series are given illustrating the newly introduced concepts. These time series expand the toolbox for citation analysis by focusing on a specific subnetwork of the global citation network. It is stated that citation analysis has three application areas: information retrieval, research evaluation and structural citation network studies. This contribution is explicitly placed among structural network studies. 相似文献
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The rise of software as a research object is mirrored by increasing interests in quantitative studies of scientific software. However, inconsistent citation practices have led most existing studies of this type to base their analysis of software impact on software name mentions, as identified in full-text publications. Despite its limitations, citation data exists in much greater quantities and covers a broader array of scientific fields than full-text data, and thus can support investigations with much wider scope. This paper aims to analyze the extent to which citation data can be used to reconstruct the impact of software. Specifically, we identify the variety of citable objects related to the lme4 R package and examine how the package’s impact is dispersed across these objects. Our results shed light on a little-discussed challenge of using citation data to measure software impact: even within the category of formal citation, the same software object might be cited in different forms. We consider the implications of this challenge and propose a method to reconstruct the impact of lme4 through its citations nonetheless. 相似文献
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《Journal of Informetrics》2020,14(4):101066
Author keywords for scientific literature are terms selected and created by authors. Although most studies have focused on how to apply author keywords to represent their research interests, little is known about the process of how authors select keywords. To fill this research gap, this study presents a pilot study on author keyword selection behavior. Our empirical results show that the average percentages of author keywords appearing in titles, abstracts, and both titles and abstracts are 31%, 52.1%, and 56.7%, respectively. Meanwhile, we find that keywords also appear in references and high-frequency keywords. The proportions of author-selected keywords appearing in the references and high-frequency keywords are 41.6% and 56.1%, respectively. In addition, keywords of papers written by core authors (productive authors) are found to appear less frequently in titles and abstracts in their papers than that of others, and appear more frequently in references and high-frequency keywords. The percentages of keywords appearing in titles and abstracts in scientific papers are negatively correlated with citation counts of papers. In contrast, the percentages of author keywords appearing in high-frequency keywords are positively associated with citation counts of papers. 相似文献
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科技期刊参考文献数量与部分引证指标的定量关系初探 总被引：1，自引：0，他引：1
针对目前相关研究缺乏定量分析的现状,探讨中国科技期刊参考文献数量与总被引频次、影响因子的定量关系.根据《中国科技期刊引证报告》2000-2013年的相关统计数据,拟合出相应的关系曲线及公式,分析篇均引文数与平均总被引频次、篇均引文数与平均影响因子的关系和变化趋势.结果表明:篇均引文数与平均总被引频次呈现较好的线性关系;篇均引文数与平均影响因子呈现比较理想的三次多项式关系;拟合曲线与统计数据吻合良好.根据这2个拟合公式进行预测,当篇均引文数达到20时,中国科技核心期刊的平均总被引频次有望超过1 700,平均影响因子有望超过1.0.根据预测结果,如果篇均引文数能在现有基础上提高26％,则平均总被引频次有可能提高44％,平均影响因子有可能提高90％. 相似文献
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参考文献引用分类标注与科技期刊和论文的评价 总被引：6，自引：0，他引：6
为了规范参考文献的引用,减小引文问题对科技期刊和论文评价所造成的影响,使得以引文为基础的各种分析方法在科技期刊和论文的评价中更加合理、更加科学,提出了参考文献引用分类标注的概念.依据被引文献对论文作用的不同和引用意义的差别,将论文所引用参考文献分为正相关性引用类、负相关性引用类和平行相关性引用类,建议在论文写作中标注出分类的标志,编辑和审稿人在编审时可据此核实参考文献引用的正确性.在论文评价时分类进行检索统计,有利于进一步规范引文分析的各项指标,变笼统的引文分析为细化的据类分析评价,使引文分析评价体系更加科学、更加可靠. 相似文献
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选择期刊Scientometrics、Journal of Informetrics 2003-2012年期间发表的论文和国际科学计量学与信息计量学大会(ISSI大会)论文集论文为样本,对中国大陆和台湾地区科学计量学与信息计量学的发展进行比较研究。研究从4个方面展开:论文计量分析、引文计量分析、合作研究以及研究内容考察。研究结果表明,中国大陆和台湾地区已经成为国际上科学计量学与信息计量学论文产出大户,但是中国大陆地区论文年篇均引文略低于世界平均水平,AR指数低于台湾地区;两地区学者已经产出合著论文,但合作局限于少数学者和少数机构之间;两地区的研究对象和研究方法有共性又各有特色,中国大陆地区学者更重视科学计量,台湾地区学者更重视技术测度。最后提出促进两地区科学计量学与信息计量学发展需要深入讨论的几个问题。 相似文献
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Abstract The articles published in four prominent distance education journals between 1997 and 2002 were categorized and the references cited were tallied. The study provides an opportunity to examine research topics, methods, and citation trends. The results can be used to review current research trends and to explore potential research directions. 相似文献
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AbstractA 2017 citation study looked at four scholarly anthropology journals in order to evaluate current research trends. This study examined the following journals: Current Anthropology, the American Anthropologist, the American Ethnologist, and the Journal of Anthropological Research. The results showed an average of 89.9 citations per article, which is a large increase over previous studies. The breakdown by the largest two categories showed 48.1% citations to total books, compared to 41.2% for scholarly journals. All other source types of citations comprised only 10.7% of total citations. These results were compared to a 2005 study by William Robinson and Paul Posten of the same four journals from 1999. 相似文献
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一个基于XML的引文索引模型设计及其实现 总被引：6，自引：1，他引：5
本文概述了引文索引在科学研究、信息检索和技术开发等方面的独特利用价值 ,结合当今Web上数据表示和数据交换的新标准XML的优势 ,提出一个基于XML标记语言的引文索引模型 ,在此模型的基础上提出引文索引构建、检索和引文分析的实现方法 相似文献
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学术文献引文推荐研究进展 总被引：1，自引：0，他引：1
[目的/意义]学术文献引文推荐是指对于给定的学术文献,自动化地为其推荐合适的引文和参考文献。借助于引文推荐,用户可以在一定程度上提高撰写学术文献的效率,降低对重要相关文献的漏引。[方法/过程]分析国内外引文推荐研究的最新进展,阐述引文推荐问题的演化过程,从局部引文推荐和全局引文推荐等方面对引文推荐进行梳理,重点归纳文档相似性、主题模型、翻译模型、协同过滤和混合推荐等5种引文推荐常用方法,并总结引文推荐常用数据集和测评方法。[结果/结论]已有引文推荐研究的主要问题在于未考虑用户偏好的动态变化性及研究领域的综合性,在用户研究和实际应用方面仍有所欠缺;未来引文推荐的研究可运用语义化表达方法和自然语言生成技术,从基于上下文的引文推荐和跨语言引文推荐等方面进行展开。 相似文献