A Research Agenda for Geographic Information Science by Robert B. McMaster, E. Lynn Usery

By Robert B. McMaster, E. Lynn Usery

A detailed courting exists among GIS and various purposes, together with cartography, photogrammetry, geodesy, surveying, desktop and data technology, and records, between others. Scientists coined the time period "geographic details technology (GIScience)" to explain the idea at the back of those fields. A examine time table for Geographic info technology largely info the problems and basic medical difficulties that has to be solved if using GIS in those and different fields is to advance.Immediately following the founding of the college Consortium for Geographic info technology (UCGIS), the gang pointed out in a study time table the subjects that represented significant demanding situations to the GIS examine neighborhood. the 1st bankruptcy of this booklet can provide an advent to the time table and to the collective information that the schedule offers to researchers. Chapters 2-10 speak about 9 unique examine demanding situations. Chapters 11-14 give you the foundation of the agenda's 4 "Emerging Themes." every one bankruptcy, written by means of researchers interested in the belief of the themes, discusses uncomplicated study components, the UCGIS method, the necessity for the nationwide study time table, contributions to wisdom and society, and gives an entire set of references.The ultimate part attracts normal conclusions in regards to the UCGIS process and the outlined learn demanding situations.

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Extra info for A Research Agenda for Geographic Information Science (Section E--Nutritional Disorders)

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E. a good place for local government, federal government and private sector cooperation. Unfortunately, the development of such a system on a nationwide basis is difficult for a number of reasons. First, the address of a building or parcel of land may be the result of historical and administrative illogical decisions. 3). It is very difficult accurately to locate addresses using any form of spatial interpolation along the block face. 4). The Postal Service Zip + 4 system is now widely used for geocoding purposes because it contains a more current set of streets than available from the Census Bureau or a commercial provider.

5 Single and Multiple Date Thematic Accuracy Assessment Cartographers and photogrammetrists are adept at specifying the spatial positional accuracy (x,y,z) of a geographic observation in terms of root-meansquare-error (RMSE) statistics or circle of uncertainty. Scientists are also fairly adept at estimating the accuracy of an individual thematic map when compared with in situ “ground-reference” information using statistics such as the kappa coefficient-of-agreement (Stehman, 2000; Gahegan and Ehlers, 2000; Green and Congalton, 2003).

All the sensors mentioned have temporal resolutions of < 55 days so the temporal resolution of the land use/land cover attributes is satisfied by the current and proposed sensor systems. Additional research is required to automatically extract landuse/cover information from the high spatial resolution (< 1 x 1 m) panchromatic remote sensor data. This will require new approaches including 1) the use of neural networks (Jensen and Qiu, 1998; Qui and Jensen, 2004), 2) inductive logic decision-tree algorithms that make use of machine learning (Huang and Jensen, 1997), and 3) classification algorithms that take into account spatial and spectral characteristics such as object-oriented image segmentation algorithms (Benz, 2001).

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