This paper reports University of Pittsburgh’s participation in GeoCLEF 2008. As the first time participants, we only worked on the monolingual GeoCLEF task and submitted four runs under two different methods. Our GCEC method aims to test the effectiveness of our online geographic coordinate extraction and clustering algorithm, and our WIKIGEO method wants to examine the usefulness of using the ...

Web searchers signal their geographic intent by using place-names in search queries. They also indicate their flexibility about geographic specificity by reformulating their queries. By examining this data we can learn to understand web searcher flexibility with respect to geographic intent. We examine aggregated data of queries with locations, and locations identified from IP addresses, to ide...

We present a decision support system using data mining methods and geographic information. The geographic information consists of heterogeneous, raster and vector, data types. While raster data types represent grid-based information collected by camera sensors, e.g., satellite images, vector data types are used for representing boundary information, for example, man-made or naturally defined re...

ABSTRACT Populations of Apiosporina morbosa collected from 15 geographic locations in Canada and the United States and three host species, Prunus virginiana, P. pensylvanica, and P. padus, were evaluated using the sequence-related amplified polymorphism (SRAP) technique to determine their genetic diversity and population differentiation. Extensive diversity was detected in the A. morbosa popula...

We present TAPAS-Z, which is an agent-based freight transport analysis model for simulation of decision-making and transport activities. TAPAS-Z is a further development of a simulation model called TAPAS, and it has improved support for simulation of transport in large geographical regions. It is based on the principles that shipments are simulated for chosen supplier-consumer relations in a g...

Geographic information is defined as information linking locations on or near the Earth’s surface to properties of those locations. The technologies for handling such information include GPS, remote sensing, and geographic information systems. Behind the technologies are a set of fundamental, researchable issues whose study has been termed geographic information science. I review these technolo...