Record Display for the EPA National Library Catalog
RECORD NUMBER: 2430 OF 3168Main Title | Studies in the Analysis of Metropolitan Water Resource Systems. Volume V: A Method of Data Reduction for Water Resources Information Storage and Retrieval. | |||||||||||
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Author | Lewinge, K. L. ; | |||||||||||
CORP Author | Cornell Univ., Ithaca, N.Y. Water Resources and Marine Sciences Center. | |||||||||||
Year Published | 1972 | |||||||||||
Report Number | TR-51; DI-14-31-0001-3684; OWRR-C-3101 (3684); 06505,; C-3101 (3684) (1) | |||||||||||
Stock Number | PB-217 862 | |||||||||||
Additional Subjects | ( Water resources ; Information systems) ; ( Urban areas ; Water resources) ; Data reduction ; Information retrieval ; Data acquisition ; Water quality ; Economic models ; Computer programs ; Benefit cost analysis ; Management ; Allocation models ; Linear programming ; Management information systems | |||||||||||
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Collation | 75p | |||||||||||
Abstract | Data storage and retrieval expenses represent a significant portion of the cost of operating a management information system. The study focuses on the question of how much data already collected need be stored for future use, and on methods of reducing the quantity of data without necessarily reducing the information content. Several linear interpolation and least squares methods are explored for achieving data reduction, using as a means of illustration twenty-three different types of hydrologic records. Discussed also is the value of the data, the desired accuracy needed for various water resources studies, and the costs of data reduction as compared to data storage and retrieval. |