err_back: Internal function for crossval_sparsity
In OmicsPLS: Data Integration with Two-Way Orthogonal Partial Least Squares

Internal function for crossval_sparsity

1	err_back(dat, index, p, q)

`dat`	Matrix with numeric row/col names
`index`	Get from which(..., arr.ind = T)
`p`	Number of variables in X
`q`	Number of variables in Y

This function finds the most sparse combination of keepx and keepy (min(keepx/p + keepy/q)) that yields cov(T,U) within 1 std error of the largest cov(T,U). Note that it's possible that the resulting keepx or keepy is larger than the orignal when p >> q or p << q.

OmicsPLS documentation built on May 19, 2021, 5:08 p.m.