摘要
针对微地图用户检索地图时需手动浏览检索,无法快速准确地检索出符合用户需求地图的问题,该文提出了一种利用向量空间模型(VSM)检索微地图的方法。首先从微地图数据库中提取地图元数据文本,获取内容特征;其次利用转译词频方法建立基于地图内容特征的VSM,计算检索信息与地图内容特征的余弦相似度并进行相似度比较;最后根据比较结果从微地图数据库中获取符合用户需求的地图。采用此方法有效地提高了检索准确率,并提高了评分在检索中的权重,实现了对微地图信息的综合检索。基于检索的实验结果表明,用户应用此方法可快速检索到符合其需求的微地图,从而为微地图在内容检索方面提供一种新的方法。
Aiming at the problem that We-map users need to manually browse and retrieve maps when retrieving maps,which cannot quickly and accurately retrieve maps that meet users’requirements,a method of using vector space model(VSM)to retrieve We-maps was proposed in this paper.Firstly,the map metadata text was extracted from the We-map database to obtain the content features.Secondly,the VSM based on map content features was established by using the translated word frequency method,and the cosine similarity between the retrieved information and the map content features was calculated and the similarity was compared.Finally,according to the comparison results,the map that meets the users’requirements was obtained from the We-map database.The use of this method effectively improved the retrieval accuracy and increased the weight of the score in the retrieval,realizing a comprehensive retrieval of the We-map information.Experimental results based on the retrieval showed that users could quickly retrieve We-maps that meet their requirements by using this method,which provided a new method for content retrieval of We-maps.
作者
侯宇豪
杨维芳
马文骏
王卓
余懿韬
闫香蓉
闫浩文
HOU Yuhao;YANG Weifang;MA Wenjun;WANG Zhuo;YU Yitao;YAN Xiangrong;YAN Haowen(Faculty of Geomatics,Lanzhou Jiaotong University,Lanzhou 730070,China;Nation-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring,Lanzhou 730070,China;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring,Lanzhou 730070,China;School of Resources and Environmental Sciences,Wuhan University,Wuhan 430079,China)
出处
《测绘科学》
CSCD
北大核心
2023年第12期225-233,共9页
Science of Surveying and Mapping
基金
甘肃省高等学校产业支撑计划项目(2022CYZC-30)
兰州交通大学优秀平台支持项目(201806)
国家自然科学基金项目(41930101,42371463,42271454,42394063,42061076)
兰州交通大学研究生教育教学质量提升工程项目(JG202301)
