Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378607
Miaoran Duan, Gang Chen
Based on four sample point sets of 10 thousand (100*100), 250 thousand (500*500), 1 million (1000*1000) and 4 million (2000*2000), we test the space retrieval performance of MongoDB and ArcGIS in different sample quantity condition. The test results show that, after enabling spatial index, spatial retrieve performance of MongoDB is much better than ArcGIS, and the performance gap increases with the increase of sample point set; both of two products have shown strong regularity and stability in all sample point sets under test environment. Finally, experimental results explain the characteristic and application directions of two products.
{"title":"Assessment of MongoDB's spatial retrieval performance","authors":"Miaoran Duan, Gang Chen","doi":"10.1109/GEOINFORMATICS.2015.7378607","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378607","url":null,"abstract":"Based on four sample point sets of 10 thousand (100*100), 250 thousand (500*500), 1 million (1000*1000) and 4 million (2000*2000), we test the space retrieval performance of MongoDB and ArcGIS in different sample quantity condition. The test results show that, after enabling spatial index, spatial retrieve performance of MongoDB is much better than ArcGIS, and the performance gap increases with the increase of sample point set; both of two products have shown strong regularity and stability in all sample point sets under test environment. Finally, experimental results explain the characteristic and application directions of two products.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115405025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378709
Saishang Zhong, Yifu Chen, Min Zhang, Zhong Xie, Can Liu
High-accuracy image matching algorithms are a crucial step of 3D reconstruction from multiple images, which can be used to create the accurate 3D models of spatial entities. SURF, a conventional image matching algorithm, has the disadvantages of sparse matching, high incorrect rate. Thus, SURF matching algorithms are hard to meet the demand of high-accuracy 3D reconstruction. This paper introduces the MSURF, a new image matching algorithm which combines homography and SURF algorithm. Experiments are performed by comparing MSURF with conventional matching algorithms from the aspects of quantity and quality, and the experimental results verifies that MSURF can not only increase the quantity of match points, but also improve the accuracy of match points. In addition, the paper analyzes the experimental result, and acquired the application features of MSURF. Thereby, the new proposed matching algorithm, MSURF, extends and improves the existing matching algorithm, and ensures the high-accuracy 3D reconstruction.
{"title":"MSURF: A new image matching algorithm which combines homography and SURF algorithm","authors":"Saishang Zhong, Yifu Chen, Min Zhang, Zhong Xie, Can Liu","doi":"10.1109/GEOINFORMATICS.2015.7378709","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378709","url":null,"abstract":"High-accuracy image matching algorithms are a crucial step of 3D reconstruction from multiple images, which can be used to create the accurate 3D models of spatial entities. SURF, a conventional image matching algorithm, has the disadvantages of sparse matching, high incorrect rate. Thus, SURF matching algorithms are hard to meet the demand of high-accuracy 3D reconstruction. This paper introduces the MSURF, a new image matching algorithm which combines homography and SURF algorithm. Experiments are performed by comparing MSURF with conventional matching algorithms from the aspects of quantity and quality, and the experimental results verifies that MSURF can not only increase the quantity of match points, but also improve the accuracy of match points. In addition, the paper analyzes the experimental result, and acquired the application features of MSURF. Thereby, the new proposed matching algorithm, MSURF, extends and improves the existing matching algorithm, and ensures the high-accuracy 3D reconstruction.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123718265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378635
Bing He, B. Kong
As the highest mountain chain in the world, the Himalaya's snow and ice are melting gradually. How to extract the border and area of permanent snow and ice in Himalaya becomes a very important problem for global climate change research. In order to explore methods to extract permanent snow and ice in unreachable area, this paper takes the multi-source remote sensing data as the basic of multi-scale segmentation, and utilizes the decision tree to probe object-oriented permanent snow and ice extraction. This paper adopts the vector distance method and optimal segmentation scale calculation model to solve the problem of segmentation scale selection. It takes horizontal and vertical distance between the boundary of image objects area after segmentation and the actual boundary of classification targets as the precision difference index, and estimates the effectiveness of segmentation results in order to determine the optimal segmentation scale. Compared with the land-use visual interpretation data of Institute of Mountain Hazards and Environment, the accuracy of extraction results can reach 92.5%. It shows that the proposed methods are feasible, and the results are also credible and accurate.
{"title":"Permanent snow and ice extraction based on object-oriented classification in Himalaya","authors":"Bing He, B. Kong","doi":"10.1109/GEOINFORMATICS.2015.7378635","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378635","url":null,"abstract":"As the highest mountain chain in the world, the Himalaya's snow and ice are melting gradually. How to extract the border and area of permanent snow and ice in Himalaya becomes a very important problem for global climate change research. In order to explore methods to extract permanent snow and ice in unreachable area, this paper takes the multi-source remote sensing data as the basic of multi-scale segmentation, and utilizes the decision tree to probe object-oriented permanent snow and ice extraction. This paper adopts the vector distance method and optimal segmentation scale calculation model to solve the problem of segmentation scale selection. It takes horizontal and vertical distance between the boundary of image objects area after segmentation and the actual boundary of classification targets as the precision difference index, and estimates the effectiveness of segmentation results in order to determine the optimal segmentation scale. Compared with the land-use visual interpretation data of Institute of Mountain Hazards and Environment, the accuracy of extraction results can reach 92.5%. It shows that the proposed methods are feasible, and the results are also credible and accurate.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125462113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378698
Huihua Lv, F. Zhou
This study was to systematically comprehend water quality status and its spatial pattern in Yancheng region, north of Jiangsu Province. According to the principle of fuzzy synthetic evaluation and GIS technology, water quality of the Yancheng region was analyzed based on 5 parameters which were selected from 39 monitoring sections. The spatial patterns of evaluation results of regional water quality was obtained to provide a Visual expression. The results indicated that river water quality varied significantly with different areas, the water quality of urban districts were inferior to that of rural areas; the primary contaminated rivers were Chuanchanghe and Xinyanggang; the water quality of upstream rivers inflow was not good, and only one of the six monitoring sections reached the functional zoning requirements. The water quality map could be used to identify the key water pollution area and put forward pollution prevention and management measures.
{"title":"Identification of the Yancheng region water quality using GIS and fuzzy synthetic evaluation approach","authors":"Huihua Lv, F. Zhou","doi":"10.1109/GEOINFORMATICS.2015.7378698","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378698","url":null,"abstract":"This study was to systematically comprehend water quality status and its spatial pattern in Yancheng region, north of Jiangsu Province. According to the principle of fuzzy synthetic evaluation and GIS technology, water quality of the Yancheng region was analyzed based on 5 parameters which were selected from 39 monitoring sections. The spatial patterns of evaluation results of regional water quality was obtained to provide a Visual expression. The results indicated that river water quality varied significantly with different areas, the water quality of urban districts were inferior to that of rural areas; the primary contaminated rivers were Chuanchanghe and Xinyanggang; the water quality of upstream rivers inflow was not good, and only one of the six monitoring sections reached the functional zoning requirements. The water quality map could be used to identify the key water pollution area and put forward pollution prevention and management measures.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114143135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378613
G. Cai, Liu Yang, Mingyi Du
The phenomenon of urban heat island (UHI) and urban heat sink (UHS) has become an object of public concern in recent years with the rapid development of urbanization around the world. This paper focused on the spatial expansion and dynamic change of UHIs in Beijing, China from satellite images. The UHS intensity was indicated by mean plus standard deviation method. An index of spatial expansion intensity was introduced and some sketch maps of spatial extension intensity in 32 directions were represented using equal-fan analysis to show the main sprawl directions of severe UHSs in different periods. The dynamic change of UHS effect during different periods with time span in adjacent years 1988, 1996, 2003, 2006 to 2013 was discussed respectively. The results showed that, the severe UHS expansion direction was not the same during different periods, and the occurrence of severe UHS effect was not always proportional to the development of urbanization, and regions with severe UHS effect increased from 15% to 21% over years from 1988 to 2013.
{"title":"Dynamic change and spatial expansion of urban heat sinks in Beijing, China","authors":"G. Cai, Liu Yang, Mingyi Du","doi":"10.1109/GEOINFORMATICS.2015.7378613","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378613","url":null,"abstract":"The phenomenon of urban heat island (UHI) and urban heat sink (UHS) has become an object of public concern in recent years with the rapid development of urbanization around the world. This paper focused on the spatial expansion and dynamic change of UHIs in Beijing, China from satellite images. The UHS intensity was indicated by mean plus standard deviation method. An index of spatial expansion intensity was introduced and some sketch maps of spatial extension intensity in 32 directions were represented using equal-fan analysis to show the main sprawl directions of severe UHSs in different periods. The dynamic change of UHS effect during different periods with time span in adjacent years 1988, 1996, 2003, 2006 to 2013 was discussed respectively. The results showed that, the severe UHS expansion direction was not the same during different periods, and the occurrence of severe UHS effect was not always proportional to the development of urbanization, and regions with severe UHS effect increased from 15% to 21% over years from 1988 to 2013.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117022850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378604
S. Hou, Xuesheng Zhao, Haiqian Hou, Yaqin Guan
Based on the classic data structure of quad-tree, topological cracks are created in the global terrain mesh in the adaptive subdivision case. A new topological structure called multi-resolution half-edges is applied for encoding multi-resolution mesh of the global terrain in this paper, which does not create topological cracks when subdividing the mesh adaptively. The main contents are as follows; Firstly, the theory of multi-resolution half-edges is introduced into the Spherical Diamond Grid (SDG), and some methods are put forward, including storage, encoding and coordinate transformation. Then, the adaptive seamless algorithm of SDG is designed and achieved. Finally, by using C++ language and DirectX tools, an experimental system is developed with the global terrain data, GTOPO30. The results show that the adaptive seamless model of the global terrain can be realized based on multi-resolution half-edges. Compared with restricted quad-tree, the simplified result based on multi-resolution half-edges structure is more efficient and complete in accordance with the terrain relief.
{"title":"An adaptive seamless model of the global based on multi-resolution half-edges","authors":"S. Hou, Xuesheng Zhao, Haiqian Hou, Yaqin Guan","doi":"10.1109/GEOINFORMATICS.2015.7378604","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378604","url":null,"abstract":"Based on the classic data structure of quad-tree, topological cracks are created in the global terrain mesh in the adaptive subdivision case. A new topological structure called multi-resolution half-edges is applied for encoding multi-resolution mesh of the global terrain in this paper, which does not create topological cracks when subdividing the mesh adaptively. The main contents are as follows; Firstly, the theory of multi-resolution half-edges is introduced into the Spherical Diamond Grid (SDG), and some methods are put forward, including storage, encoding and coordinate transformation. Then, the adaptive seamless algorithm of SDG is designed and achieved. Finally, by using C++ language and DirectX tools, an experimental system is developed with the global terrain data, GTOPO30. The results show that the adaptive seamless model of the global terrain can be realized based on multi-resolution half-edges. Compared with restricted quad-tree, the simplified result based on multi-resolution half-edges structure is more efficient and complete in accordance with the terrain relief.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129519772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378676
Nianlong Han, Wei Zhang, Kai Liang
Shenzhen is one of cities that is real estate market-oriented, and the real estate is an important industry in the economic development. Real estate price statistics have drawn more and more attention and is being questioned due to distortion of announced real estate price in recent years. For example, the new commercial house price statistics is measured by using a simple average of price statistics, but the sample's heterogeneity leads to the house prices by statistics inconsistent with the real house prices. Meanwhile, in the process of second-hand housing transactions, the transaction prices is distortion and real house prices are out of control, caused by fake contracts. In order to grasp changes and trends of the price in the real estate market accurately, this research designs a house price indexes model, which covers new and secondary house in Shenzhen based on the real estate database. The Shenzhen house price indexes system employs B/S and three-layer architecture. It is based on the Skyline platform, and utilizes the JavaScript language for secondary development. The Shenzhen house price indexes system can effectively integrate real estate data, spatial data, 3D simulation model and house price indexes model, which achieves to monitor, manage, and analyze real estate data, and house price indexes. The system prepares and publishes periodic house price indexes, which could provide the latest, timeliest, and most accurate real estate price information for the parties in the real estate market.
{"title":"The design and implementation of Shenzhen house price indexes system based on 3D-GIS","authors":"Nianlong Han, Wei Zhang, Kai Liang","doi":"10.1109/GEOINFORMATICS.2015.7378676","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378676","url":null,"abstract":"Shenzhen is one of cities that is real estate market-oriented, and the real estate is an important industry in the economic development. Real estate price statistics have drawn more and more attention and is being questioned due to distortion of announced real estate price in recent years. For example, the new commercial house price statistics is measured by using a simple average of price statistics, but the sample's heterogeneity leads to the house prices by statistics inconsistent with the real house prices. Meanwhile, in the process of second-hand housing transactions, the transaction prices is distortion and real house prices are out of control, caused by fake contracts. In order to grasp changes and trends of the price in the real estate market accurately, this research designs a house price indexes model, which covers new and secondary house in Shenzhen based on the real estate database. The Shenzhen house price indexes system employs B/S and three-layer architecture. It is based on the Skyline platform, and utilizes the JavaScript language for secondary development. The Shenzhen house price indexes system can effectively integrate real estate data, spatial data, 3D simulation model and house price indexes model, which achieves to monitor, manage, and analyze real estate data, and house price indexes. The system prepares and publishes periodic house price indexes, which could provide the latest, timeliest, and most accurate real estate price information for the parties in the real estate market.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124572598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378572
Dingtao Shen, Qiting Kuang, Jie Yang, Jianhua Ni, Jian Jia
Flood damage assessment is an important part of assessing flood control in hydraulic engineering, flood risk mapping, and flood insurance claims. How to assess flood damage scientifically and accurately has been the emphasis and difficulty of flood disaster research. This article describes the present research status of flood damage loss assessments from three aspects: the disaster classification, the indicator system of assessing the loss of flood damage, and the method of assessing the loss of flood damage, and explores the current problems in the scale of assessment, the indicator system of assessment, the determination of the loss rate of hazard-affected bodies, as well as other aspects in current approach of assessing flood damage loss. In the end, the prospect for further research is made.
{"title":"The progress in the research of flood damage loss assessment","authors":"Dingtao Shen, Qiting Kuang, Jie Yang, Jianhua Ni, Jian Jia","doi":"10.1109/GEOINFORMATICS.2015.7378572","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378572","url":null,"abstract":"Flood damage assessment is an important part of assessing flood control in hydraulic engineering, flood risk mapping, and flood insurance claims. How to assess flood damage scientifically and accurately has been the emphasis and difficulty of flood disaster research. This article describes the present research status of flood damage loss assessments from three aspects: the disaster classification, the indicator system of assessing the loss of flood damage, and the method of assessing the loss of flood damage, and explores the current problems in the scale of assessment, the indicator system of assessment, the determination of the loss rate of hazard-affected bodies, as well as other aspects in current approach of assessing flood damage loss. In the end, the prospect for further research is made.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114208867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378554
Dekui Lv, Weidong Tao, Xiaxin Ying, Yanjun Cui
According to the statistics of MIIT, at the end of January 2014, China mobile users had reached 1.235 billion. Maps as mobile internet key entrance, whether ordinary users or enterprise customers have unprecedented requirements to user experience of the map, traditional mobile map using online tiles load slowly, and can not meet the needs of the current application. The ability to quickly load map tiles from GIS Servers has become an urgent problem to be solved in mobile mapping applications. This paper analyzes the map tiles implementation principle and the present situation of the mobile terminal maps, and then based on the study, a mobile terminal oriented massive map tiles storage technology is proposed which is based on embedded database, and finally, an index algorithm is employed to the map display. The technology after a full practice verification can effectively improve the loading speed of map tiles, and it can be a good solution for map tiles fast reading and writing. At the same time, the storage technology has characteristics of portability strong and synchronization convenient.
{"title":"The design and implementation of massive map tile storage technology oriented to the mobile terminal","authors":"Dekui Lv, Weidong Tao, Xiaxin Ying, Yanjun Cui","doi":"10.1109/GEOINFORMATICS.2015.7378554","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378554","url":null,"abstract":"According to the statistics of MIIT, at the end of January 2014, China mobile users had reached 1.235 billion. Maps as mobile internet key entrance, whether ordinary users or enterprise customers have unprecedented requirements to user experience of the map, traditional mobile map using online tiles load slowly, and can not meet the needs of the current application. The ability to quickly load map tiles from GIS Servers has become an urgent problem to be solved in mobile mapping applications. This paper analyzes the map tiles implementation principle and the present situation of the mobile terminal maps, and then based on the study, a mobile terminal oriented massive map tiles storage technology is proposed which is based on embedded database, and finally, an index algorithm is employed to the map display. The technology after a full practice verification can effectively improve the loading speed of map tiles, and it can be a good solution for map tiles fast reading and writing. At the same time, the storage technology has characteristics of portability strong and synchronization convenient.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116268981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-06-19DOI: 10.1109/GEOINFORMATICS.2015.7378648
Zhiwei Hou, Yunqiang Zhu, Xing Gao, Kan Luo, Dongxu Wang, Kai Sun
It is crucial in scientific research to discover and obtain specified and relevant data efficiently and accurately, while the ambiguity of keywords, imperfectness and inexactness of descriptions of datasets make it a hard task to improve the recall ratio and precision ratio in geodata retrieve. Aims at providing a possible solution to these problems, this paper studied the design and construction of the Chinese Geological Time Scale Ontology (CGTO) regarding the temporal features within datasets. CGTO, which is built on the basis of the Time Ontology constructed before, is divided into 4 subsystems and 2 supplementary systems, including the Chinese and international version of geochronologic and chronostratigraphic systems together with GSSP (Global Stratotype Section and Point). Classes and instances in CGTO are related to each other by using predicates defined in this study such as “geologicAge” and “hasGSSP”, or temporal topological relations derived from the basic Time Ontology, like “intAfter” and “intMeets” which represent the time order of interval time entities. At the end of this paper, some future works are discussed in order to make CGTO more applicable.
高效、准确地发现和获取特定的、相关的数据是科学研究的关键，而在地理数据检索中，由于关键词的模糊性、数据集描述的不完善和不精确，提高查全率和查准率是一个难题。为了解决这些问题，本文从数据集的时间特征出发，研究了中国地质时间尺度本体(CGTO)的设计与构建。CGTO在之前构建的时间本体的基础上，分为4个子系统和2个补充系统，包括中国版和国际版的地质年代学和年代地层系统，以及GSSP (Global Stratotype Section and Point)。CGTO中的类和实例通过使用本研究定义的谓词(如“geoicage”和“hasGSSP”)或从基本时间本体派生的时间拓扑关系(如“intAfter”和“intMeets”)来相互关联，这些谓词表示间隔时间实体的时间顺序。最后，对今后的工作进行了展望，以期使CGTO更加适用。
{"title":"A Chinese Geological Time Scale Ontology for geodata discovery","authors":"Zhiwei Hou, Yunqiang Zhu, Xing Gao, Kan Luo, Dongxu Wang, Kai Sun","doi":"10.1109/GEOINFORMATICS.2015.7378648","DOIUrl":"https://doi.org/10.1109/GEOINFORMATICS.2015.7378648","url":null,"abstract":"It is crucial in scientific research to discover and obtain specified and relevant data efficiently and accurately, while the ambiguity of keywords, imperfectness and inexactness of descriptions of datasets make it a hard task to improve the recall ratio and precision ratio in geodata retrieve. Aims at providing a possible solution to these problems, this paper studied the design and construction of the Chinese Geological Time Scale Ontology (CGTO) regarding the temporal features within datasets. CGTO, which is built on the basis of the Time Ontology constructed before, is divided into 4 subsystems and 2 supplementary systems, including the Chinese and international version of geochronologic and chronostratigraphic systems together with GSSP (Global Stratotype Section and Point). Classes and instances in CGTO are related to each other by using predicates defined in this study such as “geologicAge” and “hasGSSP”, or temporal topological relations derived from the basic Time Ontology, like “intAfter” and “intMeets” which represent the time order of interval time entities. At the end of this paper, some future works are discussed in order to make CGTO more applicable.","PeriodicalId":371399,"journal":{"name":"2015 23rd International Conference on Geoinformatics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126213076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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