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RECORD NUMBER: 112 OF 265

OLS Field Name OLS Field Data
Main Title Numerical Index for Characterizing Data Set Separation.
Author Lafemina, D. H. ; Jurs, P. C. ;
CORP Author Pennsylvania State Univ., University Park.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1985
Report Number EPA-R-811037; EPA/600/J-85/385;
Stock Number PB86-198892
Additional Subjects Chemistry ; Pattern recognition ; Organic compounds ; Indexes(ratios) ; Numerical analysis ; Molecular structure ; Chemical reactivity ; Reprints ; Data sets ; Computer applications
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB86-198892 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 6p
Abstract
A method is reported for assessing the degree of separation between two clusters of points representing chemical data. The method, based on trend vectors, has been tested on both randomly generated and actual data sets. The index is intended to be a quick method for detecting the relative degree of separation between data sets (i.e., suitability of descriptors being used) in structure-activity studies or other pattern-recognition studies.