志愿者信誉度与目标可信度试验分析
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摘要
为了探索和了解不同地区及不同目标要素类型对志愿者信誉度与目标可信度计算的适用情况,本文采用来自不同大洲、不同地区OpenStreetMap真实历史数据中的线和面对象分别进行实验,以分析志愿者信誉度与目标可信度作为对VGI质量评价的一种方法,是否局限于仅对线或面目标单种要素的质量评价适用,同时,验证它们对于来自不同地区的数据是否具有有效性和可行性。试验结果表明,利用来自各大洲不同地区的OpenStreetMap真实历史数据,提取其中的线、面要素一起作为对象,利用志愿者信誉度与目标可信度计算模型对其进行质量评价时,志愿者信誉度和目标可信度计算结果与要素质量的好坏整体上都呈正相关关系。
In order to explore and understand the applicability of different regions and different types of object feature to the calculation of volunteer's reputation and object trustworthiness,this paper uses the real-time data from Open Street Map in different regions of different continents to conduct experiments separately,as a way to assess the quality of VGI by analyzing the volunteers' reputation and object trustworthiness whether is limited to the quality evaluation of single elements of polyline or polygon features,meanwhile to verify their effectiveness and feasibility for data from different regions. When volunteers' reputation and object trustworthiness model evaluate the quality of the polyline and polygon features together as the object extracted from the real historical data of Open Street Map of different regions in different continents,the experimental results show that volunteer's reputation and feature trustworthiness generally has a positive correlation with the quality of the object.
In order to explore and understand the applicability of different regions and different types of object feature to the calculation of volunteer's reputation and object trustworthiness,this paper uses the real-time data from Open Street Map in different regions of different continents to conduct experiments separately,as a way to assess the quality of VGI by analyzing the volunteers' reputation and object trustworthiness whether is limited to the quality evaluation of single elements of polyline or polygon features,meanwhile to verify their effectiveness and feasibility for data from different regions. When volunteers' reputation and object trustworthiness model evaluate the quality of the polyline and polygon features together as the object extracted from the real historical data of Open Street Map of different regions in different continents,the experimental results show that volunteer's reputation and feature trustworthiness generally has a positive correlation with the quality of the object.
引文
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[11]赵肄江,周晓光.地理信息志愿者信誉度评估的版本相似度模型——以面目标为例[J].测绘学报,2015,44(5):578-584.
[12]赵肄江,周晓光,黄梦妮.基于用户信誉的自发地理信息可信度计算模型[J].武汉大学学报:信息科学版,2016,41(11):1 530-1 536.
[2]李德仁,邵振峰.论新地理信息时代[J].中国科学:信息科学版,2009,39(6):679-587.
[3] Goodchild M F,Li Linna.Assuring the Quality of Volunteered Geographic Information[J]. Spatial Statistics,2012(1):110-120.
[4]钱新林.面向自发地理信息的空间数据表达与管理方法研究[D].武汉:武汉大学,2011.
[5]陈舒燕.基于OpenStreetMap的出行可达性分析与实现[D].上海:上海师范大学,2010.
[6] Zook M,Graham M,Sheklton T,et al. Volunteered GeoGraphic Informatin and Crowdsourcing Disaster Relif:A Case Study of the Haitian Earthquake[J]. World Medical&Health Policy,2010,2(2):7-33.
[7]胡庆武,王明,李清泉.利用位置签到数据探索城市热点与商圈[J].测绘学报,2014,43(3):314-321.
[8]张红平,顾学云,熊萍,等.志愿者地理信息研究与应用初探[J].地理信息世界,2012,10(4):67-71.
[9] Flanagin A J,Metzger M J.The Credibility of Volunteered Geographic Information[J]. GeoJo-urnal,2008,72(3-4):137-148.
[10]赵肄江.基于志愿者信誉的众源地理信息可信度模型[D].长沙:中南大学,2016.
[11]赵肄江,周晓光.地理信息志愿者信誉度评估的版本相似度模型——以面目标为例[J].测绘学报,2015,44(5):578-584.
[12]赵肄江,周晓光,黄梦妮.基于用户信誉的自发地理信息可信度计算模型[J].武汉大学学报:信息科学版,2016,41(11):1 530-1 536.
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