Huge amounts of data have been stored in databases, data warehouses, geographic information systems, and other information repositories , and this data is still growing rapidly 4]. Companies are building data warehouses capable of storing hundreds of terabytes of data related to natural resource exploration; astronomical databases are measured in terabytes in size; and it is expected that the N...

Geographical data is inherently uncertain. There are a variety of sources that contribute to this uncertainty. Operations performed on data during an analysis will most likely only increase this uncertainty. To understand the uncertainty in the results of an analysis, requires information about the uncertainty in the input data, and some idea about how various analysis operations propagate and ...

We synthesize the financial crisis contagion literature through the gravity model from physics and test the hypothesis that the severity of contagion relates positively to trade and financial linkages but negatively to psychic distance between countries, when macroeconomic fundamentals and institutional factors are controlled. The psychic distance variable, a behavioral predictor constructed al...

The Internet’s tremendous value is undoubtedly dependent on its universal connectivity among a great number of heterogeneous networks that are distributed over the world. In recent years, while the Internet’s scale has expanded exponentially, the current status of its connectivity is still in the lack of comprehensive and formal study. In this paper, we contribute to the understanding of Intern...

From the large amount of web photos and other meta knowledge, recognizing landmark images has been actively studied in recent years. Previous landmark recognition research based on visual similarities have several limitations in terms of sparseness, efficiency and functionality. In this paper, I proposed a landmark hierarchy which consists of images, geographical clusters, visual clusters and t...

The Internet revolution has made long-distance communication dramatically faster, easier, and cheaper than ever before. This, it has been argued, has decreased the importance of geographic proximity in social interactions, transforming our world into a “global village” with a "borderless society". We argue for the opposite: while technology has undoubtedly increased the overall level of communi...