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陈兰杰 《中国科技资源导刊》2011,43(3):13-22
利用信息可视化方法对Web of Science(SCI,SSCI,A & HCI)中1986-2009年收录的科技资源管理论文的引文数据进行文献共被引分析,以图谱的方式展示科技资源管理研究关健节点所代表的科技资源管理研究专家及其著作对科技资源管理发展所起的重要作用,并探讨了国际科技资源管理研究的热点和前沿领域. 相似文献
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通过技术跟踪,可以了解某一技术领域的现状和发展态势,为技术战略的制定提供决策信息支持.基于此,文章在技术跟踪基本流程分析的基础上,以数据挖掘、信息萃取、知识发现等技术为手段,提出了一个基于多维标度的技术跟踪图谱设计方法,开发实践层面的技术跟踪工具,并以公路工程领域为例,从国家、机构和个人三个层面进行技术优势领域的可视化实验,以此判别技术领域的深层次结构.在此基础上,着重分析我国在此领域的技术发展态势和总体现状,为相关科技计划战略的制定做一些基于工程技术分析的支撑性工作. 相似文献
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Wei Xiaofeng 《情报学报》2012,31(9)
本文首先对ISI Web of Science中的SCI、SSCI和CPCI-S三个引文数据库收录的国外专利情报相关研究论文数据进行时空维度的计量分析,再利用信息可视化分析软件CiteSpace绘制国家(或地区)共现、科学主题共现、文献共被引和共词网络知识图谱.从国外专利情报领域的科研合作、学科分布、知识基础、研究热点与前沿领域等进行分析,进而探索国外专利情报领域研究的演进规律、特点及发展趋势,为国内专利情报领域的科研规划与管理提供必要的参考. 相似文献
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陈兰杰 《中国科技资源导刊 (中国信息导报)》2011,(3):13-22
利用信息可视化方法对Web of Science(SCI, SSCI,A&HCI) 中1986—2009 年收录的科技资源管理论文的引文数据进行文献共被引分析,以图谱的方式展示科技资源管理研究关键节点所代表的科技资源管理研究专家及其著作对科技资源管理发展所起的重要作用,并探讨了国际科技资源管理研究的热点和前沿领域。 相似文献
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基于专利共类分析的技术网络结构研究:1971~2010 总被引：1，自引：0，他引：1
随着科学技术的发展和新兴技术领域的出现,技术网络结构也日趋复杂.本文利用德温特创新专利引文索引数据库(DII)的德温特手工代码(DMC)分类标准,探索由专利构成的技术网络结构.基于1971~2010年的所有专利数据,本文采用科学计量学中的共现分析方法、社会网络分析方法和信息可视化技术,建立大型技术共现矩阵,从而构建技术共现网络,绘制技术共现图谱.在此基础上,分析不同领域之间技术发展的联系,识别关键技术领域以及同一领域内的技术发展脉络和技术网络结构. 相似文献
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基于共词分析的技术跟踪可视化研究——以公路工程领域为例 总被引：1，自引：0，他引：1
通过技术跟踪,可以了解某一技术领域的现状和发展态势,为技术战略的制定提供决策信息支持,但目前对技术跟踪的研究还不够深入.基于此,文章从共词分析的角度,以计算机技术为手段,从数据采集、数据分析和数据可视化三个方面,提出技术跟踪的可视化方法,详细地阐述了此种方法的结构和具体实现步骤.在此基础上,以公路工程领域为例,从个人、机构和国家三个层面进行可视化实验,并着重对中国在此领域的技术情况进行了详细的分析,以此判别技术领域的深层次结构,为技术发展战略的制定做一些基于工程技术分析手段的支撑性工作. 相似文献
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基于专利引文分析的时间线技术 总被引：3，自引：0，他引：3
在对专利引文可视化技术现状进行分析的基础上,将基于引文分析的时间线技术运用到专利文献的可视化分析。详细阐述该技术的理论依据、设计思想,并用美国专利数据库中的DVD激光头专利进行技术应用,证明该技术能揭示专利文献中的技术热点及其发展演变,并挖掘关键技术。 相似文献
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《Journal of Informetrics》2020,14(2):101015
In recent decades, the United States Patent and Trademark Office (USPTO) has been granting more and more patents with more and more references, which has led to patent citation inflation. Citation counts are a fundamental consideration in decisions about research funding, academic promotions, commercializing IP, investing in technologies, etc. With so much at stake, we must be sure we are valuing citations at their true worth. In this article, we reveal two types of patent citation inflation and analyze its causes and cumulative effects. Further, we propose some alternative indicators that more accurately reflect the true worth of a citation. A case study on the patents held by eight universities demonstrates that the relative indicators outlined in this paper are an effective way to account for citation inflation as an alternative approach to evaluating patent activity. 相似文献
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Forward citations of patents have been used extensively to capture the impact of technological knowledge. However, our understanding of the factors shaping patent citation patterns remains limited. One of the main limitations is the lack of scholarly attention paid to the dynamic influences arising from the evolution of technology fields. From an evolutionary perspective, technological impact is not simply determined by the static attributes of a technology itself; it is also dynamically affected by changes in the external conditions. Drawing on this viewpoint, this study suggests a model for understanding patent citation patterns by reflecting the evolution of the technology fields to which each patent belongs. Four such factors are explored: technology cycle time, potential of technological convergence, popularity of the technology field, and technological novelty. Based on the proposed model, we show how expected citation patterns can change as a result of different scenarios for technology field evolution. We conduct a case study of patents in the information technology and healthcare industries to show citation patterns of patents across heterogeneous industries as well as those within an industry. Contributions to the innovation literature and research investment decisions are discussed. 相似文献
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概述专利引用分析方法和相关指标,并简单介绍引用分析工具。在此基础上结合情报研究实践,以分子设计育种领域为例,从国家、公司以及技术三个层面进行专利引用分析实证。在实证分析中,用专利引用时间间隔来揭示技术创新和技术吸收的速度;用基于自引和他引和组合分析来揭示机构的相对竞争态势;用交叉引用指数和共同引用指数来分析机构间的技术交叠程度;用专利引用树来揭示技术发展脉络。 相似文献
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[目的/意义]比较Innography、WIPS和Patentics3个专利检索系统的引文分析功能,旨在帮助用户识别满足自己需要的专利引文分析工具,同时提出进一步完善专利检索系统引文分析功能的建议。[方法/过程]通过比较3个专利检索系统引文收录范围、引文检索方式、前引后引查找功能、引文类型区分功能、非专利文献查找功能、可视化呈现功能和引文检索准确度,发现3个专利检索系统都具备基础的引文分析功能,但各有不足,难以满足现实需求。[结果/结论]Innography应加强数据清洗,WIPS需扩大引文收录范围,Patentics则要增强系统稳定性,三者在检索数据准确性方面都有待提高。 相似文献
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This study uses bibliographic coupling to identify missing relevant patent links, in order to construct a comprehensive citation network. Missing citation links can be added by taking the missing relevant patent links into account. The Pareto principle is used to determine the threshold of bibliographic coupling strength, in order to identify the missing relevant patent links. Comparisons between the original patent citation network and the comprehensive patent citation network with the missing relevant patent links are illustrated at both the patent and assignee levels. Light emitting diode (LED) illuminating technology is chosen as the case study. The relationships between the patents and the assignees are obviously enhanced after adding the missing relevant patent links. The results show that the growth rates on both the total number and the average number of links have apparently improved at the patent level. At the assignee level, the number of linked assignees and the average number of links between two assignees are increased. The differences between the two citation networks are further examined by means of the Freeman vertex betweenness centrality and Johnson's hierarchical clustering. The patents with more new links to other patents have distinct results in terms of the Freeman vertex betweenness centrality. The enhancement of links among patents also results in different clustering. 相似文献
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《Journal of Informetrics》2023,17(1):101370
Elucidating and prejudging the patent technological value (PTV) is an important issue in the field of technology innovation and Patentometrics. However, most studies adopt a static perspective to define and evaluate it according to forward citations (FC), which disregards the time attribute and evolution process and may cause some contradictions or ambiguities among findings. Through combing the time and number attributes of FC, this study recommends a four-dimensional index (technology lifetime, strength, breadth, and dispersion) from the standpoint of patented technology diffusion, a dynamic evolution process. By considering patent data from three technology fields - graphene, information and communication, bio-medicine - as samples, we examine the multidimensional characteristics of PTV and further adopt Cox and multiple regression analysis to determine its influential factors. The finding shows that PTV is multi-dimensional and the four-dimensional index is helpful to explain the differentiation effects of different influential factors. Furthermore, six internal factors (intrinsic and evolutionary) that influence PTV in varying degree are identified and verified. Specially, as for intrinsic factors, only backward citation influences all four-dimensional index with a positive impact on technology lifetime and strength, and negative impact on breadth and dispersion. Technology field can negatively affect strength and breadth, but positively affect dispersion. Delivery term can only affect technology lifetime negatively. As for evolutionary factors, patent legal lifetime influences all four-dimensional index with a negative impact on technology lifetime and strength, and positive impact on breadth and dispersion. Forward citation exerts a positive impact on breadth and strength while a negative impact on technology lifetime and dispersion. Transfer number exerts a positive impact on technology lifetime, but a negative influence on dispersion. This study not only offers a four-dimensional index to signify the technological value of a patent, but construes the contradictions or ambiguities about the relationships between the influential factors and PTV. Besides, the influential factor model is also helpful to prejudge the technological value of patents at different stages after the granting. 相似文献
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关键技术挖掘与企业技术竞争情报——以DVD激光头技术为例 总被引：2，自引：0，他引：2
以美国专利数据库（USPTO）1995—2004年的专利数据为基础,利用关键词检索与专利引文检索相结合的方法来构建DVD激光头相关主题的专利数据集,用专利文献耦合和专利引证关系的文献计量学方法分析DVD激光头技术中的子技术主题的逐年演变和技术间的知识流动。 相似文献
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将启发式方法作为技术范式的特征指示,以启发式方法的不连续性和稳定性为切入点,基于专利引证网络分析半导体制造领域技术范式和技术轨迹的发展和演化过程。从美国专利数据库中采集55 229项1976年至2006年授权的半导体制造领域的相关专利,从专利数据集NBER中查询得到专利引证关系,利用网络分析软件Pajek构建专利引证网络。应用搜索路径连接统计法和搜索路径节点对统计法计算专利引证路径的连接度,提取技术进化轨迹。以技术进化分叉为切入点,从技术进化轨迹连续性和稳定性的角度对半导体制造技术各个发展阶段进行界定。分析各个发展阶段中专利的适用范围、技术背景、解决方案等,从中提炼技术启发式方法,进而分析技术范式及其演化情况。最后对下一步的研究工作进行展望。 相似文献