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基于文本挖掘的专利技术主题分析研究综述 被引量:42
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作者 胡阿沛 张静 +1 位作者 雷孝平 张晓宇 《情报杂志》 CSSCI 北大核心 2013年第12期88-92,61,共6页
为应对专利数量巨大和技术的日益复杂给专利技术主题分析带来的挑战,以及利用文本挖掘技术的专利技术主题分析近来成为研究热点。首先介绍文本挖掘的概念和其发展历史。其次,对目前基于文本挖掘的专利技术主题分析方法进行了归纳,包括... 为应对专利数量巨大和技术的日益复杂给专利技术主题分析带来的挑战,以及利用文本挖掘技术的专利技术主题分析近来成为研究热点。首先介绍文本挖掘的概念和其发展历史。其次,对目前基于文本挖掘的专利技术主题分析方法进行了归纳,包括主题词词频分析、共词分析、文本聚类分析和与引文聚类结合的分析方法,总结其常用的分析工具并介绍新的科学图谱分析软件——SciMAT。最后总结基于文本挖掘的专利技术主题分析方法的优点与不足,为其将来的研究提供建议。 展开更多
关键词 文本挖掘 技术主题 专利分 词频分 共词分 析文本聚类
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Financial Effectiveness of Greek Municipalities: An Empirical Investigation
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作者 Christos Pallis Petros Pallis 《Management Studies》 2016年第5期183-196,共14页
Municipalities are autonomous economic and administrative entities, with common actions and responsibilities. Moreover, all Municipalities are quite different considering specific characteristics, such as geographic, ... Municipalities are autonomous economic and administrative entities, with common actions and responsibilities. Moreover, all Municipalities are quite different considering specific characteristics, such as geographic, demographic, and economic. The aim of this research is to separate the entire sample of Municipalities in Greece into categories, based on the effectiveness of financial management and financial performance into effective and ineffective ones. For the separation of the sample into groups, cluster analysis was preferred. For this reason, three variables were used: the lending capacity of the Municipality, flexibility in making non-investment costs, and flexibility in investment spending. These three variables were considered to be the key dimensions of effectiveness in financial management and therefore their use, representatively describes the effectiveness of Greek Municipalities. Thus, this paper presents the literature review of the financial effectiveness of Municipalities and the methodology of an empirical research through structured questionnaire that was sent to the entire population of Greek Municipalities, characterized in this way with considerable heterogeneity. In this way, it investigates the views of Mayors in the two categories of Municipalities (effective and non effective financial management and financial performance) as regards: (a) the biggest problems faced by the citizens in their Municipality, and (b) the biggest personnel problems faced by their Municipality. Concluding, the prioritization of both problems seems to be the same for both groups of Municipalities. The frequency of responses differs slightly and differences are not so large that financial performance can be considered to affect respondents' opinions. 展开更多
关键词 Greek Municipalities local development public finance financial performance financial management empirical investigation
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