共查询到19条相似文献，搜索用时 165 毫秒
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在对目前各种作者重名消解方法进行总结的基础上, 针对中文文献题录数据特征, 将重名消解问题转换为同名作者文献的分类问题, 提出一种基于规则和相似度的重名消解框架模型, 并对其中的分解规则和合并规则进行详细的算法描述, 最后选取3个学科的重名作者数据集进行实验, 实验结果表明该模型能有效提高作者重名消解的准确率. 相似文献
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作者学术关系研究进展 总被引：1，自引：0，他引：1
[目的/意义] 作者学术关系是指从知识交流的角度出发,作者与作者之间表现出来的某种学术联系。对作者学术关系的研究有利于发现作者之间研究的相关度、学术共同体和科学知识结构,促进知识交流和知识传播,对知识创新和国家知识体系的健全和发展具有重要意义。[方法/过程] 采用综合归纳的方法,从作者合作关系、作者引用关系和作者链接关系3个方面对国内外作者学术关系的研究现状进行梳理。[结果/结论] 国内外学者对作者合作关系、作者共被引关系及作者链接关系的研究趋于丰富,对作者互引关系、作者耦合关系的研究还有待提升;研究领域主要集中在图书情报学领域。未来对作者学术关系的研究方向为作者重名问题分析、大数据引文挖掘及作者学术关系的拓展研究等。 相似文献
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社会网络分析方法在图情领域合著关系的实证研究 总被引：7，自引：0，他引：7
本文首先构建了图情领域的作者合著网络,并将该网络与国外其他学科的合著网络进行比较分析,发现目前图情领域的合著交流并不充分,提出需要进一步加强交流与合作。随后,构建了图情领域核心作者的合著网络和web合著网络,并对两个网络进行了简单的比较分析,指出可以通过使用web合著网络近似模拟学术合著网络进行社会网络分析,解决web合著中的文献重复消岐和作者重名消岐问题。 相似文献
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[目的/意义]探讨学者关联数据集的定位及其构建方法,以期为学科发展、学者评价与信息共享利用提供便利。[方法/过程]在阐释现有机构知识库内涵基础上,分析学者关联数据集之功能特点,并以我国图书情报领域为例,通过开源软件D2R发布该领域学者的关联数据集。[结果/结论]学者关联数据集不同于机构知识库,它以所属学科领域的学者为数据起点,以网罗一切相关信息资源,并以完全开放、关联与共享的方式提供知识。在学者关联数据集的构建与发布过程中,重点需克服实体URI定义、作者重名、专著与网络学术记录难以采全等问题。 相似文献
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文献计量法是目前广泛应用在科研评估中的定量分析方法。本文用其分析2004年至2009年国内关于机构知识库研究的197篇期刊论文,分别从基于期刊的分析、基于引文的分析和基于作者的分析三方面,具体从论文时间分布、期刊分布、基金论文分布、被引频次、下载频次、关键词词频、作者分布、作者机构分布等多个角度全面的统计分析,研究我国机构知识库研究的发展,探讨存在的问题和对策及未来发展的方向。 相似文献
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研究了一种基于连续型Hopfield神经网络和粒子群优化（PSO）的线性系统辨识方法。首先建立了系统的预测模型以及辨识误差函数,然后将误差函数近似为连续型Hopfield神经网络的能量函数。利用神经网络的自我演化,得到近似的辨识参数。通过引入PSO机制,缓解了Hopfield神经网络在辨识过程可能陷入局部极小值的缺陷,增强了辨识的效果。最后,仿真研究验证了所提方法的有效性。 相似文献
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随着互联网新媒体的迅猛发展,虚假信息随之泛滥,作为高校信息中心的图书馆有责任和义务培养用户信息辨识能力。与一些做得较好的国外高校图书馆相比,国内高校图书馆对用户辨识虚假信息能力的培养不够系统和清晰,具体培训过程的趣味性、实用性及深入性有待提高。文章通过文献和网络调研法,对国内外知名高校图书馆虚假信息辨识培养相关的研究和实践成果进行对比、分析和总结,提出提升馆员媒介与信息素养能力及开展跨学科合作、建立识别虚假信息的指南和网站、建立虚假信息辨别指标体系和培养方法体系、设计实施培养媒介与信息素养的多元实践项目、构建基于信息真假辨识能力的评价体系等五个方面建议,期以有助于我国高校图书馆完善与深化用户虚假信息辨识能力的培养。 相似文献
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《中国国家博物馆馆刊》2019,(7)
以往见诸报道的黄土丘陵晚商时期遗址很少,遗址的数量、密度、分布情况不清,学界由此产生了一些认识上的偏差。实际上,山西、陕西两省过去的普查已经发现了大量晚商时期遗址,只是尚未辨识确认。作者报告了山西省石楼县20处李家崖文化遗址的调查情况和采集植物遗存的浮选结果,发现聚落最显著的特点是规模小而分散,生计方式为粗放农业、定居程度较高。作者在以往调查材料中确认了300余处李家崖文化遗址、100余处西坬渠类型遗址,在文中报道了这些遗址的基本信息。基于这些工作,作者讨论了晚商时期黄土丘陵的文化分布、来源、年代、生计方式问题。 相似文献
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在深入分析NSTL篇级元数据特点的基础上,结合模糊匹配算法,提出一种适合NSTL现有数据的人名消歧规则集,并给出基于该规则集的人名消歧算法。通过对实际数据集的实验,该算法在准确率、召回率等指标方面都有良好的表现,具备较好的消歧效果。 相似文献
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Staša Milojević 《Journal of Informetrics》2013,7(4):767-773
There are a number of solutions that perform unsupervised name disambiguation based on the similarity of bibliographic records or common coauthorship patterns. Whether the use of these advanced methods, which are often difficult to implement, is warranted depends on whether the accuracy of the most basic disambiguation methods, which only use the author's last name and initials, is sufficient for a particular purpose. We derive realistic estimates for the accuracy of simple, initials-based methods using simulated bibliographic datasets in which the true identities of authors are known. Based on the simulations in five diverse disciplines we find that the first initial method already correctly identifies 97% of authors. An alternative simple method, which takes all initials into account, is typically two times less accurate, except in certain datasets that can be identified by applying a simple criterion. Finally, we introduce a new name-based method that combines the features of first initial and all initials methods by implicitly taking into account the last name frequency and the size of the dataset. This hybrid method reduces the fraction of incorrectly identified authors by 10–30% over the first initial method. 相似文献
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《Journal of Informetrics》2020,14(2):101037
A large number of overseas elites were brought back to China by the policy in the past decade. However, name disambiguation defied investigations on the relationship between their mobility and research performance. By taking advantage of the ORCID website and applying causal inference strategies, we investigated 2489 China-connected scientists’ academic performance in the Web of Science database in terms of their job mobility, including 1388 scientists who moved to China the treatment group, and 1101 scientists with a possibility to move to China the control group. The results show that first, scientists moving to China have a new growth pattern where both their productivity and the rates of being corresponding authors in publications grew more rapidly than before; however, they made fewer contributions to the four top journals, Nature, Science, Cell, and PNAS. Second, the research performance of the scientists is affected by the time of mobility towards China, the countries from which they moved, and the disciplines of their publications. Last, China now maintains symmetrical inflow-outflow patterns with most countries, especially developed countries in Europe and North America, with only a few exceptions (e.g., Pakistan). 相似文献
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Mark Sanderson 《Information Retrieval》2000,2(1):49-69
Although always present in text, word sense ambiguity only recently became regarded as a problem to information retrieval which was potentially solvable. The growth of interest in word senses resulted from new directions taken in disambiguation research. This paper first outlines this research and surveys the resulting efforts in information retrieval. Although the majority of attempts to improve retrieval effectiveness were unsuccessful, much was learnt from the research. Most notably a notion of under what circumstance disambiguation may prove of use to retrieval. 相似文献
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《Journal of Informetrics》2023,17(3):101430
The increasingly systemic nature of innovation activities requires the development of appropriate and reliable indicators that accurately reflect interactions between actors in the innovation scenery. While patent data offers potential to identify such interactions, previous research has tended to focus on inventors rather than applicants, due to the discretionary nature of filing decisions on the level of applicants. As such, the phenomenon of co-patents – patent applications filed by two or more independent entities – has received only limited attention. We address this gap by first, developing and validating an applicant name disambiguation approach to identify seemingly ‘false’ co-patents, implying multiple applicants that are likely part of the same organizational entity. Second, we assess co-patent trends across technology fields, countries and types of actors in Europe. Results suggest that a considerable number (30%) of European co-patents filed with the EPO are likely to be ‘false’ co-patents. The resulting, deflated figures suggest that co-patenting coincides with developing dynamics, both at the level of national innovation systems as well as in (emergent) science-intensive fields. The observed growth of co-patenting over time is primarily driven by co-patenting activities involving public actors; co-patenting trends involving companies and entrepreneurs remain stable over time. 相似文献
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基于网络协作标注的标签消歧方法述评 总被引：1，自引：0，他引：1
窦玉萌 《现代图书情报技术》2010,26(3):27-32
以网络协作标注中的标签为研究对象,调研标签消歧方法,并将其划分为基于数据挖掘方法消歧、基于统计分析方法消歧、利用相关知识组织工具消歧、引入控制机制消歧和开发可视化组件消歧5类。比较这5类消歧方法在用户参与度、消歧时机、消歧性质、实验与应用情况和发展前景5个方面存在的区别和联系。 相似文献