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Within the context of geographic information science, error propagation is a fundamental issue related to both uncertainty modeling and spatial data quality. Error propagation is defined as a process in which error is propagated from the original data set to a resulting data set that has been generated by a spatial operation. The concept of error propagation is illustrated in Figure 1.

Figure 1 The Concept of Error Propagation

The data in the original data set(s) or the data set(s) generated through the spatial operation can be spatial data (e.g., the lines representing the road networks), nonspatial data (e.g., the size of a building block), or topological relations (e.g., a building is on the south side of a road). The spatial operation can be, for example, overlay, ...

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