Geographic relation completion contributes greatly to improving the quality of large-scale geographic knowledge graphs (GeoKGs). However, internal features a GeoKG used in GeoKGs embedding are often limited by weak connectivity between entities (geo-entities). If there is no proper choice method external semantic enhancement, this will interfere with representation and learning KG. Therefore, w...

data types (ADTs) provide MADS with the predefined spatial and temporal constructs. These ADTs consist of data structures and sets of operations. They are used for describing the spatial and temporal extents of the schema elements. Each ADT has an associated icon, to be used in schema diagrams. Spatial ADTs define the spatial extent of the described feature. The MADS predefined SADTs are: point...

The use of geo-spatial differentiation in resource economics has become more widespread in recent years, particularly in the urban and real estate literature. However, previous to use in environmental economics, geo-spatial characteristics were used in international trade and theories of industrial concentration (Krugman, 1998). Geographic Information Systems, or GIS, is a database management s...

In many application domains, data is collected and referenced by geo-spatial location. Spatial data mining, or the discovery of interesting patterns in such databases, is an important capability in the development of database systems. A noteworthy trend is the increasing size of data sets in common use, such as records of business transactions, environmental data and census demographics. These ...

Manuscript received January 20, 2012; revised march 29, 2012; accepted April 17, 2012. 7 The authors are with the Spanish Institute for Sustainable Agriculture, CSIC, Apartado 4084, 14080-Cordoba, Spain (e8 mail: [email protected] ). 9 10 11 Abstract--Geo-referencing of remote imagery with high spatial resolution can be achieved using the 12 semi-AUtomatic GEO-referencing (AUGEO) system which ...

Zhilin Li is Professor in Geo-Informatics at the Hong Kong Polytechnic University. He is Co-Chair of the Scientific Programme Committee of the XXIth ISPRS Congress and Vice President of the International Cartographic Association (ICA). His current research interests include multi-scale modelling and representation of spatial data, digital terrain modelling, spatial relations and spatial informa...

BACKGROUND Human interaction and population mobility determine the spatio-temporal course of the spread of an airborne disease. This research views such spreads as geo-social interaction problems, because population mobility connects different groups of people over geographical locations via which the viruses transmit. Previous research argued that geo-social interaction patterns identified fro...