There exists a lot of spatial data due advances in geo-spatial data capturing and collection technologies and tools like GPS, Satellite, Hand held Cameras, and total station based ground survey methods which are now available in most parts of developing world. But these data are not fully utilized when making geo-spatial decision not because of lack of analysis and modeling packages and persona...

Mobile computer systems equipped with wireless communication and sensor technology—such as mobile phones with cameras—have become widely available. Context information, for example the user’s current location or their physical environment, plays an increasingly important role in simplifying the interaction between users and such mobile information systems. A generic framework for federating het...

Media sharing applications, such as Flickr and Panoramio, contain a large amount of pictures related to real life events. For this reason, the development of effective methods to retrieve these pictures is important, but still a challenging task. Recognizing this importance, and to improve the retrieval effectiveness of tag-based event retrieval systems, we propose a new method to extract a set...

To achieve semantic interoperability, geo-spatial applications need to be equipped with tools able to understand user terminology that is typically different from the one enforced by standards. In this paper we summarize our experience in providing a semantic extension to the geo-catalogue of the Autonomous Province of Trento (PAT) in Italy. The semantic extension is based on the adoption of th...

To achieve semantic interoperability, geo-spatial applications need to be equipped with tools able to understand user terminology that is typically different from the one enforced by standards. In this paper we summarize our experience in providing a semantic extension to the geo-catalogue of the Autonomous Province of Trento (PAT) in Italy. The semantic extension is based on the adoption of th...

The evaluation of queries specifying both content based conditions and spatial conditions on documents contents in Geographic Information Retrieval requires representing the vagueness and context dependency of spatial conditions and the personal user’s preferences. The Geo-Finder system [1] implements a Geo-Retrieval model that evaluates flexible spatial queries combined with content queries. T...

abstractâ in this study, for spatial-temporal analyzing of cyclones in 1376, the spatial range of 30 to 80 degrees of east longitude and 0 to 80 degrees of north latitude and geo potential data with 2/ 5* 2 / 5 degrees of networking in arc levels of 1000, 925, 850, 700, 600 and 500 hpa have been used. these data are extracted for six hours (00, 06, 12, 18 zulu) database (ncep / ncar). so that, ...

Geo-textual indices play an important role in spatial keyword querying. The existing geo-textual indices have not been compared systematically under the same experimental framework. This makes it difficult to determine which indexing technique best supports specific functionality. We provide an all-around survey of 12 stateof-the-art geo-textual indices. We propose a benchmark that enables the ...

The groundwater quality research is one of the important and its pollution control was included insome research literatures. Ground water quality has spatial and temporal variation so classical statisticscould not account these variations at the regional scale researches. This study usedgeo-statisticalmethodsto optimize an interpolation method in order to estimate the spatial distribution of pH...

Semantic Web resources such as DBpedia provide a rich source of structured knowledge about geographical features such as towns, rivers and historical buildings. Retrieval from these resources of all content that is relevant to a particular spatial query of, for example, containment or proximity is not always straightforward because there is considerable inconsistency in the way in which geograp...