共查询到19条相似文献，搜索用时 250 毫秒
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社会化标注系统允许用户对网络信息资源自由地进行标签标注,从而实现用户对网络信息资源的分类、检索和共享。由于标注的随意性、没有经过受控词表的控制,使得标注系统具有一定的模糊性,导致标签的不准确和歧义。针对这些问题,本文探索标签与主题图结合的可行性,在分析标签与主题图结合的可行性基础上,提出两者的构建模型,进而将主题图技术应用于企业知识标签体系中。 相似文献
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中文引文索引主题图的构建及其实现 总被引：1，自引：0，他引：1
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构建语义化知识服务系统是数字图书馆在语义Web环境下的发展方向。针对目前各种语义Web技术在数字图书馆开发应用的现状和问题,本研究融合国际基于Topic的语义知识组织技术,结合国内的需求,提出了“语义主题模型”,目标为构建可实施的语义化知识系统。文章首先对以“概念化主题、主题关联、语义标签”为内涵的“语义主题化模型”概念进行定义;其次,设计基于此模型的语义化知识系统框架;再次,对相关应用进行了探讨;最后,对未来开发工作进行了规划。 相似文献
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基于主题图构建知识专家学术社区研究 总被引：2，自引：1，他引：1
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基于主题图的旅游文献组织方法研究* 总被引：1，自引：0，他引：1
李清茂 《现代图书情报技术》2009,25(4):82-87
课题选取四川省阿坝州旅游文献信息资源作为研究个案,按照主题图（Topic Maps）的标准,分析旅游文献组织过程中主题及类型选取原则,定义旅游文献各种主题类型之间的关联关系,结合主题图工具软件提出旅游文献主题图构建方法,并展示旅游文献主题图的组织效果。 相似文献
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Alexander Wolff 《Informatik - Forschung und Entwicklung》2007,22(1):23-44
This paper deals with automating the drawing of subway maps. There are two features of schematic
subway maps that make them different from drawings of other networks such as flow charts or organigrams.
First, most schematic subway maps use not only horizontal and vertical lines, but also diagonals. This
gives more flexibility in the layout process, but it also makes the problem provably hard. Second, a subway
map represents a network whose components have geographic locations that are roughly known to the users
of such a map. This knowledge must be respected during the search for a clear layout of the network.
For the sake of visual clarity the underlying geography may be distorted, but it must not be given up, otherwise
map users will be hopelessly confused.
In this paper we first give a rather generally accepted list of rules that should be adhered
to by a good subway map. Next we survey three recent methods for drawing subway maps, analyze their
performance with respect to the above rules, and compare the resulting maps among each other and to official
subway maps drawn by graphic designers. We then focus on one of the methods, which is based on mixed-integer
linear programming, a widely-used global optimization technique. This method guarantees to find a drawing
that fulfills a subset of the above-mentioned rules (if such a drawing exists) and optimizes a weighted
sum of costs that correspond to the remaining rules. The method can draw even large subway networks such
as the London Underground in an aesthetically pleasing manner, similar to maps made by professional graphic
designers. If station labels are included in the optimization process, so far only medium-size networks
can be drawn. Finally we give evidence why drawing good subway maps is difficult (even without labels). 相似文献
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Alexander Wolff 《Informatik - Forschung und Entwicklung》2007,42(4):23-44
This paper deals with automating the drawing of subway maps. There are two features of schematic
subway maps that make them different from drawings of other networks such as flow charts or organigrams.
First, most schematic subway maps use not only horizontal and vertical lines, but also diagonals. This
gives more flexibility in the layout process, but it also makes the problem provably hard. Second, a subway
map represents a network whose components have geographic locations that are roughly known to the users
of such a map. This knowledge must be respected during the search for a clear layout of the network.
For the sake of visual clarity the underlying geography may be distorted, but it must not be given up, otherwise
map users will be hopelessly confused.
In this paper we first give a rather generally accepted list of rules that should be adhered
to by a good subway map. Next we survey three recent methods for drawing subway maps, analyze their
performance with respect to the above rules, and compare the resulting maps among each other and to official
subway maps drawn by graphic designers. We then focus on one of the methods, which is based on mixed-integer
linear programming, a widely-used global optimization technique. This method guarantees to find a drawing
that fulfills a subset of the above-mentioned rules (if such a drawing exists) and optimizes a weighted
sum of costs that correspond to the remaining rules. The method can draw even large subway networks such
as the London Underground in an aesthetically pleasing manner, similar to maps made by professional graphic
designers. If station labels are included in the optimization process, so far only medium-size networks
can be drawn. Finally we give evidence why drawing good subway maps is difficult (even without labels). 相似文献
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[目的/意义] 目前,非物质文化遗产信息资源的组织以网站为载体,多采用传统树状或星状链接进行导航,且以地域分割,无法全面展示非物质文化遗产特色,弱化了其价值。采用新技术合理组织非物质文献遗产信息资源对非物质文献遗产的宣传与保护有重要意义。[方法/过程] 基于主题图理论和方法,建立非物质文化遗产信息资源主题图模型,并以作为世界非物质文化遗产的京剧、昆曲为例,辅以Ontopia主题图开发工具,展示非物质文化遗产信息资源主题图的生成及组织效果。[结果/结论] 主题图不仅能够合理、全面地组织非物质文化遗产信息资源,还能够以可视化的方式直观展示非物质文化遗产的历史渊源、传承脉络、流派发展等特殊属性,具有重要的实践意义。 相似文献
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专业社交媒体中主题图谱的内容包括论坛中的主题及主题之间的关系,其具有挖掘专业产品创新方向、构建专业知识索引等重要应用价值。本文基于深度学习技术与文本挖掘技术,提出了专业社交媒体中的主题图谱构建方法。首先,使用专业社交媒体中的文本训练Skip-Gram模型,利用该模型的隐藏层权重与模型输出的预测结果,分别获取词语间的语义相似度与上下文关联度。其次,基于该语义相似度与上下文关联度,对已有领域种子本体词汇进行扩充,将语义相似或上下文相邻近的词汇纳入本体词汇,为主题抽取提供高质量的领域词汇。然后,基于扩充的专业本体词汇,使用结合本体词汇的LDA主题模型从专业社交媒体文本中抽取主题与主题词。最后,利用语义相似度与上下文关联度,定义关联度权重,通过图模型与谱聚类,获取主题间与主题词的关联关系与层次结构。本文使用汽车论坛语料进行主题图谱生成实验。实验结果表明,本文方法获取的主题词纯净度相比单独使用LDA模型提升了20.2%,且能够清晰合理地展现主题之间的关系。 相似文献
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一种基于主题图的组织知识的分布式存取架构 总被引：5，自引：0，他引：5
在分析组织知识的存储状况和主题图结构的基础上 ,提出了一种基于主题图的组织知识的分布式存取架构 ,并且进一步给出了主题图的组织方式和使用方法 ,以及支持主题图的工作流程。依据提出的架构 ,易于实现组织知识的分布式存取和提高组织知识管理的有效性。最后给出一个实现架构的实例。 相似文献
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