Jun Li, Huayang Dai, Yuan Zhang, Q. Qin, Hong-bo Jiang
{"title":"Extracting map information from trajectory and social media data","authors":"Jun Li, Huayang Dai, Yuan Zhang, Q. Qin, Hong-bo Jiang","doi":"10.1109/ICSDM.2015.7298018","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298018","url":null,"abstract":"Existing surveying methods are either labor intensive or highly costly and have a long updating cycle, which hinders the timely update of maps. In view of these problems, this paper proposes a framework of extracting digital map information from raw geospatial big data. The framework consists of four steps: data preprocessing, mathematical modeling, information extraction and map post-processing. Extracting map information based on the proposed framework is low-cost and has a short update cycle. A case study is illustrated to show the effectiveness of the framework.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132836337","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}
{"title":"Comparing multilevel modelling and artificial neural networks in house price prediction","authors":"Yingyu Feng, K. Jones","doi":"10.1109/ICSDM.2015.7298035","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298035","url":null,"abstract":"Two advanced modelling approaches, Multi-Level Models and Artificial Neural Networks are employed to model house prices. These approaches and the standard Hedonic Price Model are compared in terms of predictive accuracy, capability to capture location information, and their explanatory power. These models are applied to 2001-2013 house prices in the Greater Bristol area, using secondary data from the Land Registry, the Population Census and Neighbourhood Statistics so that these models could be applied nationally. The results indicate that MLM offers good predictive accuracy with high explanatory power, especially if neighbourhood effects are explored at multiple spatial scales.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134038855","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}
{"title":"Automatic registration of multi-view terrestrial laser scanning point clouds in complex urban environments","authors":"Bisheng Yang, Z. Dong, Wenxia Dai, Yuan Liu","doi":"10.1109/ICSDM.2015.7298041","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298041","url":null,"abstract":"This paper proposes a method to automatically register multi-view Terrestrial Laser Scanning Point Clouds in complex urban environment. Firstly, the point cloud segmentation method is applied to cluster the cross-section by self-adaptive distance cluster algorithm. Then, geometric primitives are extracted from point clouds by fitting lines or cylinders, whose spatial continuity is used to extract feature lines and feature triangles. Next, triangles are matched according to their similarity and mismatches are rejected based on geometric constraint. Finally, the proposed method registers multi-view point clouds by constructing a minimum spanning tree of weighted undirected graph. Experimental results show that our method is feasible and it improves the efficiency and precision of registration in urban environment.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130368278","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}
V.-H. Cao, K.-X. Chu, Nhien-An Le-Khac, Mohand Tahar Kechadi, D. Laefer, L. Truong-Hong
{"title":"Toward a new approach for massive LiDAR data processing","authors":"V.-H. Cao, K.-X. Chu, Nhien-An Le-Khac, Mohand Tahar Kechadi, D. Laefer, L. Truong-Hong","doi":"10.1109/ICSDM.2015.7298040","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298040","url":null,"abstract":"Laser scanning (also known as Light Detection And Ranging) has been widely applied in various application. As part of that, aerial laser scanning (ALS) has been used to collect topographic data points for a large area, which triggers to million points to be acquired. Furthermore, today, with integrating full wareform (FWF) technology during ALS data acquisition, all return information of laser pulse is stored. Thus, ALS data are to be massive and complexity since the FWF of each laser pulse can be stored up to 256 samples and density of ALS data is also increasing significantly. Processing LiDAR data demands heavy operations and the traditional approaches require significant hardware and running time. On the other hand, researchers have recently proposed parallel approaches for analysing LiDAR data. These approaches are normally based on parallel architecture of target systems such as multi-core processors, GPU, etc. However, there is still missing efficient approaches/tools supporting the analysis of LiDAR data due to the lack of a deep study on both library tools and algorithms used in processing this data. In this paper, we present a comparative study of software libraries and new algorithms to optimise the processing of LiDAR data. We also propose new method to improve this process with experiments on large LiDAR data. Finally, we discuss on a parallel solution of our approach where we integrate parallel computing in processing LiDAR data.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127057345","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}
Peipei Dai, Changfeng Jing, Mingyi Du, Wensheng Zhou
{"title":"A method based on spatial analyst to detect hot spot of urban component management events","authors":"Peipei Dai, Changfeng Jing, Mingyi Du, Wensheng Zhou","doi":"10.1109/ICSDM.2015.7298025","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298025","url":null,"abstract":"Rapid growth of urban public facilities increased the important impact on urban component management in case number and hotspot space distribution. Many urban component management events such as huddle of wastes and illegal ads have been frequently hot issues. To support the government decision, methods and flows based on spatial analyst are put forward to explore the hot spot of urban component management event. Illegal ads event is taken as case study. The event's spatial correlation is decided by using exploratory spatial data analysis and Global Moran's I. Ripley's K is used to explore its spatial distribution pattern, which provides the basis for urban management events data mining. To identify the spatial border of hot spots, the spatial hot spot analysis is employed. Finally, the overlay spatial analyst between hot spot and business area layer and/or residential building layer is used to validate the feasibility and rationality of the hot spot analysis. It is concluded that illegal ads event has obvious spatial clustering and coincides exactly with the existing business area and places where population flows more frequently. According to the result, the urban management administrators can make decision more conveniently and reasonably. Comparing with time series analysis methods, this method has advantage in space information, good visualization and dynamic monitor which are useful for government decision.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125585185","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}
{"title":"Spatial patterns of retail stores using POIs data in Zhengzhou, China","authors":"Caihui Cui, Zhigang Han","doi":"10.1109/ICSDM.2015.7298031","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298031","url":null,"abstract":"Identifying spatial patterns of geographic entities such as retail stores is important in city for understanding how they behave. The pattern formed by the distribution of points can be measured by some quantitative methods. In Big Data era, the data sets for spatial patterns analysis are various including traditional street network data and points of interest (POIs) data in LBS (Location based services) application. This paper analyzed the spatial pattern of retail stores and its correlations with street centrality using POIs data in Zhengzhou, China. Firstly, the paper provided an exploratory analysis of spatial patterns using the centrographic methods including Standard Deviational Ellipse and Average Nearest Neighbor. Secondly, the paper uncovered the spatial distribution of retail stores using the kernel density estimation (KDE). Finally, the paper calculated the street centrality of Zhengzhou using three centrality assessment indexes and converted all nodes centrality index values to raster pixel using KDE for correlation analysis. Results show that the retail stores are clustering pattern and mainly elongated along the west-east direction. The street centralities are correlated with the retail store location in Zhengzhou, and there is a different level of correlation between them. The paper reveals that the spatial pattern analysis and street centralities index are valuable in location analysis or urban planning.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133803180","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}
{"title":"Machine learning based social media recommendation","authors":"Tai-Ku Lai, Xianghan Zheng","doi":"10.1109/ICSDM.2015.7298020","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298020","url":null,"abstract":"In view of the problems existing in traditional recommendation algorithm of low accuracy and low efficiency, this paper presents a machine learning based social media recommendation algorithm. The algorithm is based on the traditional personalized collaborative filtering algorithm, and combines with the correlation characteristics among users in a social network. Besides, the algorithm also considers the network rating factors and upgrade its efficiency by using clustering algorithm. At last, the algorithm is realized on the Hadoop cloud platform.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"245 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132846929","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}
Fanghong Gao, P. Jiang, Xiangxiang Li, Hongqiang Wang
{"title":"Research and realization on integrated management of multisource heterogeneous satellite data based on spatial database","authors":"Fanghong Gao, P. Jiang, Xiangxiang Li, Hongqiang Wang","doi":"10.1109/ICSDM.2015.7298049","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298049","url":null,"abstract":"Based on spatial object and relation model of spatial database management system, this paper propose an “integrated spatial data-attribute data” standardized data structure of multisource heterogeneous satellite data. The structure is described by spatial table, and provides a unified access and processing interface of multisource heterogeneous satellite data. Using this standardized data structure, we can provide protection for satellite data management application system of \"Single-requirement and multi-satellite\".","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116417583","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}
{"title":"Depth estimation from a single outdoor image based on scene classification","authors":"Liu Dan, Wang Meizhen, L. Xuejun","doi":"10.1109/ICSDM.2015.7298050","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298050","url":null,"abstract":"Recovering 3D depth from a single outdoor image is a basic problem in Computer Vision and Close-Range Photogrammetry. In this paper, an efficient depth estimation approach from a single outdoor image is presented. According to scene classification, depth of regions marked as sky, ground and vertical labels is respectively predicated. Firstly, a more accurate depth calculation model for ground regions is deduced from the camera imaging model, which takes camera pitch into account. Then the depth of vertical regions is estimated based on the ground regions depth. To consider the depth change of the regions, the vertical regions with visible ground-contain points are regarded as composed of one or multi-planes, and the vanishing points are incorporated into those points to further improve the position accuracy of intersecting lines. The contrastive experimental results are shown to verify the effectiveness and validity of the proposed approach.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133163352","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}
Fengqin Sun, L. Hua, Hui Li, Yanting Wang, Yaqi Chen
{"title":"Detecting and analysis of coast changes of Xiamen Island by RS & GIS","authors":"Fengqin Sun, L. Hua, Hui Li, Yanting Wang, Yaqi Chen","doi":"10.1109/ICSDM.2015.7298053","DOIUrl":"https://doi.org/10.1109/ICSDM.2015.7298053","url":null,"abstract":"Multi-temporal Landsat images in 1999, 2006 and 2013 were used to reveal the spatial-temporal changes of the coastal locations and types of Xiamen Island. The high tide water levels were extracted as coastline approximations and the coastal types were made by manual interpretation based on Google earth high resolution images in this study. The results indicated that the coast changes mainly happened at the northern and eastern parts of the island. The artificial coast came up to 46.4 km with an increment about 8.8 km due to sea reclamation while the mudflat coast decreased about 18.1 km and faded away from 1999 to 2006. Then there was another increase of artificial coast due to returning ponds back to sea, and the sand coast also increased due to sand supply project from 2006 to 2013. Thus the artificial coast increased to 48.0 km and the sand coast increased from 10.1 km to 16.9 km. The total coastline decreased from 66.4 km to 57.0 km first but then increased back to 65.5 km during the whole period while the island area had a persistent growth from 128.5 km2 to 140.0 km2. The coastlines moved northward and seaward with less curves due to local constructions except the parts returning ponds back to sea. The rapid social and economic development raised great demand of land use as well as the environmental quality, which made sea reclamation and returning ponds back to sea the main causes of coast changes of Xiamen Island.","PeriodicalId":404001,"journal":{"name":"2015 2nd IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115134855","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}