# `05_SolventSystems/optimizer_histories`

This directory archives differential-evolution histories from the solvent-
system parameter optimization runs.

## Prerequisites

Use the root repository environment. No setup is required to inspect the CSV
files directly.

## File Patterns

Each `*_de_gen.csv` file records one optimization run from
[`../optimize_parameters_esterification_system.py`](../optimize_parameters_esterification_system.py).
Filename fragments identify the fit variant:

- `Association`: association-energy terms were varied
- `Dispersion`: binary interaction terms were varied
- `Both`: association and dispersion terms were varied together
- `only_kij_with_AA`: only interaction terms involving acetic acid were varied
- `Rehner_like_AW_*`: archived water-association variants

The folder also contains older notebook-style or exploratory filenames that do
not follow the current naming convention exactly but still store the same
per-generation optimizer trace format.

## Notes

Rows ending in `-s` store scaled optimizer variables; the following unscaled
row stores parameter values in model units. The optimizer appends to an
existing CSV when a filename is reused, so move or rename prior histories if a
rerun should start with a clean file.
