.. _method-bayes_calibration-dream-emulator-pce-import_expansion_file:

"""""""""""""""""""""
import_expansion_file
"""""""""""""""""""""


Build a Polynomial Chaos Expansion (PCE) by importing expansion coefficients and a corresponding multi-index from a file


.. toctree::
   :hidden:
   :maxdepth: 1



**Specification**

- *Alias:* None

- *Arguments:* STRING


**Description**


The coefficients can be specified in an arbitrary order. The multi-index provided is used to generate a sparse expansion that conists only of the indices corresponding to the non-zero coefficients provided in the file.


