GIS

The MonArch Digital Archiving System is a metadata repository designed for the storage, management and retrieval of digital documents and digital information in general. In contrast to conventional document management systems, the MonArch System uses ...

Trajectory data streams are huge amounts of data pertaining to time and position of moving objects. They are continuously generated by different sources exploiting a wide variety of technologies (e.g., RFID tags, GPS, GSM networks). Mining such amount ...

To study the similarity between moving object trajectories is important in many applications, e.g., to find the clusters of moving objects which share the same moving pattern, and infer the future locations of a moving object from its similar ...

We present a conceptual framework for interpreting text phrases such as "in central northern Bahia" and "in northern central Bahia" as spatial element of geographic information retrieved from text. Our approach allows spatial computations with such ...

Trajectories based on GPS tracks have been studied for a number of years but only to a limited degree been used for analyzing and monitoring traffic. This paper shows how novel and important information about traffic can be computed from trajectories. ...

Several algorithms have recently been introduced for morphological analysis of scalar fields (terrains, static and dynamic volume data) based on a discrete version of Morse theory. However, despite the applicability of the theory to very general ...

Data about moving objects is being collected in many different application domains with the help of sensor networks, and GPS-enabled devices. In most cases, the moving objects are not free to move, they are usually restricted by some spatial constraints ...

In this paper, we study potential inference attacks targeting Location Based Service (LBS) users, and provide heuristic defense techniques to protect their privacy against such attacks.

Having access to supplemental information such as subsequent query ...

Location privacy and security of spatio-temporal data has come under high scrutiny in the past years. This has rekindled enormous research interest. So far, most of the research studies that attempt to address location privacy are based on the k-...

Due to rapid growth of distributed network and Internet, it becomes easy for data providers and users to access, manage, and share voluminous geospatial data in digital form through geostreaming methods. The increased availability of tools and ...

SIGGESC is a spatial decision support system (SDSS), based on a Geographic Information System (GIS), directed towards the public transportation sector. This SDSS contributes to a paradigm shift at the Portuguese Transportation Authority (IMTT) in terms ...

In this paper we present a novel algorithm for constructing 3D vector maps for off road navigation using GPS track recordings. The algorithm treats the GPS track recordings as a point cloud and performs track clustering by iteratively aggregating the ...

We report the preliminary design and realization of a high-performance, general purposed, parallel GIS (CudaGIS), based on the General Purpose computing on Graphics Processing Units (GPGPU) technologies. Still under active developments, CudaGIS ...

Recent advances in wireless communication, miniaturization of spatially enabled devices and global navigation satellite systems (GNSS) services have resulted in a large number of novel application domains. Applications in these novel domains (moving ...

People's driving behavior patterns have significant effects on the modern transportation systems. Public safety, traffic congestions, driving convenience are all affected by the driver's behaviors on the road. With the recent developments in data ...

Location and preference based recommendation could provide mobile user with his personalized interesting information. Mobile user does not always provide all attributes of his preference or query, especially when he is moving. The recommendation system ...