共查询到18条相似文献，搜索用时 359 毫秒
1.
本文针对当前专利数据预处理中存在的处理效率低、耗费资源量大、处理准确度不高的问题,结合数据挖掘中预处理技术,以欧洲专利局文献管理数据库(DOCDB)专利数据为例,设计并实现了DOCDB专利数据的预处理系统。该系统能够对DOCDB专利数据文件的结构进行解析,提取相关的专利信息,并将处理后的数据存入数据库中。实验结果表明,该系统能够高效处理专利数据,有力的提高了专利预处理的自动化水平。 相似文献
2.
网上业务系统是企业级应用的核心,网上业务系统数据的存储与交换的研究和实践受到高度重视。基于此背景,提出了基于XML的网上业务系统数据存贮模型,设计并实现了XML文档与数据库之间的数据存储与转换算法。 相似文献
3.
基于XML的数据交换与备份 总被引：1，自引：0，他引：1
作为一种可扩展性数据标记语言XML．它促进了互联网的发展。本文介绍并分析了XML语言及其特点。利用数据库生产厂商提供的对XML的支持，可方便地实现各种数据库数据的交换．并提供了一个数据库备份的实例。 相似文献
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基于XML的信息组织与处理：2．应用技术 总被引：2，自引：0，他引：2
本文介绍基于XML的基础数据与应用文献标记、地数据及知识体系标记、基于XML的应用领域信息处理与交换框架建设，并分析XML在图书情报领域中的应用以及XML对图书情报领域的挑战。 相似文献
5.
介绍基于XML的信息交换机制和映射算法,并以华东理工大学图书馆与校园"一卡通"系统的数据同步为例,介绍在不修改图书馆现有系统的前提下,实现图书馆集成系统与"一卡通"系统的集成。结合XML技术,给出基于Schema XML的第三方数据同步接口的校园"一卡通"与图书馆系统数据同步的实现方案,并重点介绍了集成方案中基于Schema XML的数据同步接口的实现。 相似文献
6.
基于XML的数字图书馆系统是将各数字图书馆间资源通过互联网进行交换利用的系统.其系统间安全通信是一个重要问题,本文提出了采用XML数据加密和XML数字签名技术来实现系统间通信的安全性,并对这两个技术作了详尽的阐述. 相似文献
7.
不同数据库法律事件代码的多来源和不一致性给专利法律事件的分类和数据深加工带来较大阻碍，目前尚未形成层次化、系统化的分类体系架构。对此，以欧洲专利局（EPO）提供的全球专利法律状态XML数据为研究对象，详细介绍数据覆盖范围以及不同类型交换数据的数据格式；基于对PatSnap、INNOGRAPHY、incoPat、SooPAT、万象云和佰腾网等国内外知名专利检索分析平台中的专利法律状态对比，把EPO专利法律状态归纳为在审、授权、有效、失效、技术转移和其他六大类，并根据各类别在专利生命周期中出现的位置，对专利当前法律状态的有效性划分为在审、有效和失效3种状态，同时将4 000多个EPO法律事件代码中的转让代码和专利许可代码进行详细分类标引，针对专利法律状态分类体系构建、专利当前有效性判定、专利技术转移分类等关键问题，对EPO专利数据进行结构化解析和深加工，从而构建EPO专利法律状态数据库物理模型，为提高专利检索和分析工作的质量及效率提供支撑。 相似文献
8.
XML是一种数据组织的标准,将XML应用于数据挖掘建模中可以在不同的数据挖掘工具之间或数据挖掘工具和其他应用系统之间实现模型交换和数据交流。本文对预言模型标记语言(PMML)进行了讨论,并给出了它在具体数据挖掘工具中的应用实例。 相似文献
9.
随着电子商务的迅猛发展,XML技术在电商平台中的应用日益突出。XML具备的良好格式及开放标准在海量数据信息交换中得到了明显体现。阐述了XML在电子商务应用中的重要作用及应用现状,并展望了其在未来电子商务发展中的应用前景。 相似文献
10.
利用XML技术实现异构数据库数据转换 总被引：1，自引：0，他引：1
随着Internet的快速发展,本地数据库需要借助Web相互交换大量的数据,而数据结构的不一致又给交换带来了问题。XML由于自身的优点就成了解决这个问题的好技术,本文详细介绍了如何以XML为中间数据实现交换的方法。 相似文献
11.
Scientific breakthroughs coming from universities can contribute to the emergence of new industries, such as in the case of biotechnology. Obviously, not all research conducted in universities leads to a radical change from existing technological trajectories. Patents and patent dynamics have long been recognized as critical in understanding the emergence of new technologies and industries. Specifically, patent citations provide insight into the originality of a discovery that has received patent protection. Yet while a large body of literature addresses the impact of patent originality on various firm performance measures, we address the question of what conditions drive patent originality in the process of knowledge creation within the university. Using data on patented cancer research, we examine how research context – as reflected by the funding source for each scientist – is associated with patent originality. We find that when university scientists are partly funded by their own university, they have a higher propensity to generate more original patents. By contrast, university scientists funded either by industry or other non-university organizations have a lower propensity to generate more original patents. The significance of our findings in the cancer research setting call for further research on this question in other research fields. 相似文献
12.
《Information processing & management》2019,56(5):1753-1770
XML has become a universal standard for information exchange over the Web due to features such as simple syntax and extensibility. Processing queries over these documents has been the focus of several research groups. In fact, there is broad literature in efficient XML query processing which explore indexes, fragmentation techniques, etc. However, for answering complex queries, existing approaches mainly analyze information that is explicitly defined in the XML document. A few work investigate the use of Prolog to increase the query possibilities, allowing inference over the data content. This can cause a significant increase in the query possibilities and expressive power, allowing access to non-obvious information. However, this requires translating the XML documents into Prolog facts. But for regular queries (which do not require inference), is this a good alternative? What kind of queries could benefit from the Prolog translation? Can we always use Prolog engines to execute XML queries in an efficient way? There are many questions involved in adopting an alternative approach to run XML queries. In this work, we investigate this matter by translating XML queries into Prolog queries and comparing the query processing times using Prolog and native XML engines. Our work contributes by providing a set of heuristics that helps users to decide when to use Prolog engines to process a given XML query. In summary, our results show that queries that search elements by a key value or by its position (simple search) are more efficient when run in Prolog than in native XML engines. Also, queries over large datasets, or that searches for substrings perform better when run by native XML engines. 相似文献
13.
主流研究认为专利放弃是专利质量低导致的“被动”技术投资失败,但实践中专利放弃有时是企业“主动”修剪专利组合的理性结果。二者矛盾,是因为研究者的视角局限在专利个体质量,而企业着眼于专利组合及长期战略目标。从企业战略的角度出发,借鉴实物期权理论,试图通过分析内外部环境的不确定性对专利放弃行为的影响,揭示企业处置专利时隐含的期权逻辑。研究通过对1992-2017年2380家A股上市企业面板数据进行实证分析发现,外生不确定性和内生不确定性会抑制企业的专利放弃行为,同时在企业专利组合多样化程度更高时不确定性对专利放弃的抑制作用更强,意味着多样化的专利组合对应对不确定性的作用更强。研究结果补充了传统研究中专利维持取决于专利质量这一观点的一元性,指出专利作为一种实物期权资产,其决策同时受到环境和专利组合层面特征的共同影响。 相似文献
14.
Patent data have been widely used in research to characterize firms’ locations in technological or knowledge space, as well as the proximities among firms. Researchers have measured firms’ technological or knowledge proximities with a variety of measures based on patent data, including Euclidean distances (using the technological classifications listed on patents), and overlap in cited patents. Often research has employed only the first listed patent classification in measures of proximities. We explore the effects of using the first listed patent class as well as other methods to measure proximities. We point out that measures of proximity based on small numbers of patents are imprecisely measured random variables. Measures computed on samples with few patents or a single patent class generate both biased and imprecise measures of proximity. We discuss the implications of this for typical research questions employing measures of proximity, and explore the effects of larger sample sizes and coarser patent class breakdowns in mitigating these problems. Where possible, we suggest that researchers increase their sample sizes by aggregating years or using all of the listed patent classes on a patent, rather than just the first. 相似文献
15.
本文从数据库设计的角度出发,对XML数据的约束进行深入的研究,提出了基于路径表达式和树模型的XML函数依赖。对于利用XML实现异构数据库的交换技术上,不仅在理论上具有指导价值,而且在实际应用中也具有现实意义和实用价值。 相似文献
16.
The valuation of patents is an important, albeit challenging task. Extant research to identify patent value indicators has so far relied on expert estimates of patent value, exploited patent renewal data, or depended on more indirect measures of patent value. Recently, specialized market places for patent transactions have emerged that allow us for the first time to directly observe patent's private value. One of the most prominent market places for patents is Ocean Tomo, a platform that offers periodical patent auctions. We make use of this auction data to empirically test predictions on patent value identifiers on real-world auction prices. We find empirical support for forward citations and the patent's family size; however, both indicators explain only a small variance in patent value. In contrast, our full model explains a large share of variance, making us optimistic that with increased directly observed patent value, such models can be useful tools in patent valuation. 相似文献
17.
中国最大500家外商投资企业在华专利及影响的计量研究 总被引：14，自引：0，他引：14
本文以在华外商投资500强及其母公司在华专利申请为实证研究对象，通过对国家知识产权局专利数据库的数据挖掘，结合新时期跨国公司在华投资和专利战略的宏观背景，从在华外商投资500强及其母公司专利申请的演变、专利申请的结构、专利申请及专利申请垄断倾向的行业分布，以及专利申请对外商在华直接投资、中国国内企业技术创新和外商在华投资效益的影响等方面，首次从实证的角度开展了较系统的计量研究，提出了跨国公司母公司专利申请垄断倾向新概念，得出了一系列新的研究结果。 相似文献
18.
《Research Policy》2019,48(9):103790
Patent scope is one of the important aspects in the debates over “patent quality.” The purported decrease in patent quality over the last decade or two has supposedly led to granting patents of increased breadth, decreased clarity, and questionable validity (in part due to over-breadth). Such patents allegedly diminish the incentives for innovation due to increased transaction costs in the market for technology, more frequent disputes and litigation, trolling behavior, and breakdowns in bargaining. This paper focuses on the patent examination process at the PTO, highlighting the relationship between patent scope and the patent examination process. We develop and validate two measurements of patent scope: independent claim length and independent claim count. These metrics—in contrast to other measurements of patent scope—can be calculated before and after examination and enable us to provide the first large-scale analysis of trends in patent scope changes during the examination process. Our results show that applications with narrower scope are associated with a higher probability of grant and a shorter and less intense examination period in comparison to applications with broader scope. Further, we find that the examination process itself tends to narrow the scope of patents relative to the scope at filing, and that the changes are more significant when the duration and intensity of examination is increased. We explain our metrics and make our data available in a public use dataset, which we hope will encourage more research in the evaluation of patent scope, patent examination, and patent quality more broadly. 相似文献