hybrid_update

ES, and Iterative ES updates with hybrid update matrix calculated from multi-fidelity runs.

hybrid_update

Class for hybrid update schemes as described in: Fossum, K., Mannseth, T., & Stordal, A. S. (2020). Assessment of multilevel ensemble-based data assimilation for reservoir history matching. Computational Geosciences, 24(1), 217–239. https://doi.org/10.1007/s10596-019-09911-x

Note that the scheme is slightly modified to be inline with the standard (I)ES approximate update scheme. This enables the scheme to efficiently be coupled with multiple updating strategies via class MixIn