A system and method for monitoring an apparatus or process asset including creating
a process model comprised of a plurality of process submodels each correlative
to at least one training data subset partitioned from an unpartitioned training
data set and each having an operating mode associated thereto; acquiring a set
of observed signal data values from the asset; determining an operating mode of
the asset for the set of observed signal data values; selecting a process submodel
from the process model as a function of the determined operating mode of the asset;
calculating a set of estimated signal data values from the selected process submodel
for the determined operating mode; and determining asset status as a function of
the calculated set of estimated signal data values for providing asset surveillance
and/or control.