A Spatial Overlay Ranking Method for a Geospatial Search of Text Objects
Open-File Report
2006-1279
By: Kenneth J. Lanfear
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Abstract
Earth-science researchers need the capability to find relevant information by location and topic. Conventional geographic techniques that simply check whether polygons intersect can efficiently achieve a high recall on location, but can not achieve precision for ranking results in likely order of importance to the reader. A spatial overlay ranking based upon how well an object's footprint matches the search area provides a more effective way to spatially search a collection of reports, and avoids many of the problems associated with an 'in/out' (True/False) boolean search. Moreover, spatial overlay ranking appears to work well even when spatial extent is defined only by a simple bounding box.
Suggested Citation
Lanfear, K.J., 2006, A Spatial Overlay Ranking Method for a Geospatial Search of Text Objects: U.S. Geological Survey Open-File Report 2006-1279, 9 p., https://doi.org/10.3133/ofr20061279.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | A Spatial Overlay Ranking Method for a Geospatial Search of Text Objects |
| Series title | Open-File Report |
| Series number | 2006-1279 |
| DOI | 10.3133/ofr20061279 |
| Year Published | 2006 |
| Language | ENGLISH |
| Publisher | Geological Survey (U.S.) |
| Contributing office(s) | U.S. Geological Survey |
| Description | 9 p. |
| Online Only (Y/N) | Y |