Compute the first moment from a single complete sort
Usage
ac.ranking(R, order, ...)
Value
The estimated first moments based on ranking views
Arguments
R
xts object of asset returns
order
a vector of indexes of the relative ranking of expected asset
returns in ascending order. For example, order = c(2, 3, 1, 4) means
that the expected returns of R[,2] < R[,3], < R[,1] < R[,4].
...
any other passthrough parameters
Details
This function computes the estimated centroid vector from a single complete
sort using the analytical approximation as described in R. Almgren and
N. Chriss, "Portfolios from Sorts". The centroid is estimated and then
scaled such that it is on a scale similar to the asset returns. By default,
the centroid vector is scaled according to the median of the asset mean
returns.