The :mod:`HCI` module is a native implementation of the Heat-bath selected CI algorithm, where selection is done based on strings rather than determinants. For example:
.. literalinclude:: /../examples/hci/00-simple_hci.py
See also :mod:`cornell_shci`.
- :source:`examples/hci/00-simple_hci.py`
- :source:`examples/hci/10-spin.py`
.. automodule:: pyscf.hci
.. automodule:: pyscf.hci.hci :members: