Standard pyCIF observation operator

Observation operators compute the operation \(\mathbf{x} \rightarrow \mathcal{H}(\mathbf{x})\) and its adjoint if necessary. This operation relies on simulations by the chosen numerical model, which are automatically initialized, articulated and chained with each other by the observation operator.

Only one observation operator is coded at the moment, with the following options:

• onlyinit (optional): if True, the observation operator will only initialize model inputs; no simulation is run in this mode, which might lead to bugs if the observation operator is called by a function expecting some outputs; the recommended mode for this option is the forward execution mode

• autorestart (optional): if True, the operator will check whether the numerical simulations were already computed; if it is the case, jumps to the last valid simulations; this is to be use to run a simulation that crashed; remove the last sub-directory to be re-computed; default is False

Therefore, the following Yaml paragraph is optional to initialize the observation operator in default mode, but is required for specifying additional options:

obsoperator:
  plugin:
    name: standard
    version: std
  onlyinit: True
  autorestart: False