| 检索应用中地理信息资源相似度计算方法研究 |
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| 引用本文： | 段帅,贾奋励,宋国民,高云亮,盖森.检索应用中地理信息资源相似度计算方法研究[J].测绘工程,2017,26(6). |
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| 作者姓名： | 段帅 贾奋励 宋国民 高云亮 盖森 |
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| 作者单位： | 1. 信息工程大学 地理空间信息学院,河南 郑州,450001;2. 南京陆军指挥学院,江苏 南京,210045 |
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| 基金项目： | 国家自然科学基金资助项目，信息工程大学地理空间信息学院硕士学位创新与创优论文基金 |
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| 摘 要： | 在地理信息资源检索应用中,资源属性间相似关系的计算还不够深入,地理信息资源的精准推荐及检索可视化应用尚难以实现。针对该问题,统一采用"相似度"对资源属性间的相似关系进行表达。资源的属性类型大部分为文本,其中具有语义差异,文中提出复合文本的相似度算法对文本类型属性进行匹配,并给出数值类型属性的"相似度"映射方案。在此基础上,实现资源时间、空间属性的相似度计算。基于所提出的相似度算法进行地理信息资源检索实验,实现地理信息资源属性间相似关系的量化,促进信息可视化在地理信息资源检索中的应用。
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| 关 键 词： | 地理信息资源 资源检索 相似计算 相似度 |
On the method of similarity computation of geographic information resources in the retrieval |
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| DUAN Shuai,JIA Fenli,SONG Guomin,GAO Yunliang,GAI Sen.On the method of similarity computation of geographic information resources in the retrieval[J].Engineering of Surveying and Mapping,2017,26(6). |
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| Authors: | DUAN Shuai JIA Fenli SONG Guomin GAO Yunliang GAI Sen |
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| Abstract: | In the retrieval of geographic information resources, as the computation of relationship between the attributes of resources is not deep enough, it is difficult to recommend the geographic information resources accurately and display the results in a visual form.In view of the above problems, this paper uses relationship to express the similarity between resource attributes.The mostly-used type of attributes is text, which has much semantic difference.So a similarity algorithm is proposed to match the text attributes, and to obtain the similarity mapping scheme of numerical attributes.On this basis the similarity of time and space attributes are calculated.Based on the proposed similarity algorithm, geographic information resources retrieval experiments are carried out,which will realize the quantification of resource similarity relation and application of information visualization in geographic information retrieval. |
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| Keywords: | geographic information resources resource retrieval similarity algorithm similar degree |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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