Description Usage Arguments Value References Examples
The function sort the features (rows or columns) based on their influence (leverage score) and list out the indexes of the top valued items
1 | topLeverage(object, C=TRUE, top.n=100, sort=TRUE)
|
object |
object of class CURobj-class |
C |
logical, if it is TRUE, then calculated the rank for the leverage scores belongs to columns, if FALSE, then to rows |
top.n |
number of indexes to list |
sort |
logical, if TRUE the indexes are sorted increasing |
The function returns a numerical vector of indexes of the most influental features
Mahoney M. W. and Drineas P. (2009) CUR matrix decompositions for improved data analysis. PNAS, 106(3):697-702
Andras Bodor, Istvan Csabai, Michael W Mahoney and Norbert Solymosi rCUR:an R package for CUR matrix decomposition BMC Bioinformatics 2012, 13:103 doi:10.1186/1471-2105-13-103
1 2 3 | data(STTm)
res <- CUR(STTm, 3, 31, 12)
topLeverage(res, top.n=10)
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