fips.posterior.Solution.gain#
- Solution.gain(W=None)[source]#
Return the gain \(K\), or \(W K\) for an aggregation.
- Parameters:
W (
LinearOperator|None) – An aggregation,k x n, its columns in the state’s order.- Returns:
Without W, \(K\) (
n x m), with \(\hat{x} = x_0 + K (z - H x_0 - c)\) for a linear method; with it, \(W K\) (k x m). The averaging kernel is written from it: \(A = K H\).- Return type: