weights_default.yaml

# selene-base default weights (v2.1 — multi-class volatile criterion replaces ice).
#
# Eight criteria contribute to the aggregate score:
# illumination, multi_volatile, eva_psr_access, los_to_earth, slope, thermal, hazard, seismic.
#
# v2.1 swaps the v1.x single ``ice`` criterion (PRP depth + PSR-proximity
# bonus combined) for the three-class **multi_volatile** criterion that
# distinguishes thermal-class accessibility within the 2 km walking-EVA
# disc: H₂O (<110 K), CO₂/NH₃ (<66 K), and ultra-cold (<60 K). Mirrors
# NASA's documented volatile-diversity priority (Paige 2010; Hayne 2020)
# and Wueller 2026's per-class treatment. Default sub-weights inside
# multi_volatile are equal at (1/3, 1/3, 1/3) — agnostic on NASA's
# preference ordering between volatile classes.
#
# v2.0 swapped the v1.x global spatial-coupling product for per-cell
# EVA-disc PSR access at the same 0.17 weight slot.
#
# **The weight slot stays at 0.17** for both v2.0 and v2.1 swaps — same
# value the v1.x single ``ice`` criterion held — so any catalog-level
# shift attributable to either swap reflects the new criterion's
# geometry, not a moved weight on the simplex.
#
# v1.8 activated the seismic criterion (distance-to-nearest-scarp via
# Mishra & Kumar 2022's south-polar lobate-scarp catalog) at weight 0.10.
#
# Why 0.15 for los_to_earth (unchanged ratio from v1.1.0):
# - Real physical criterion NASA prioritises in actual mission planning.
# - More binary-ish than continuous, so weighted slightly less than
#   illumination/multi_volatile/eva_psr_access.
#
# This vector was chosen on physics-and-operations grounds, not by
# fitting to validation data. Older vectors are preserved:
#   config/weights_legacy.yaml      — five criteria (no coupling, no LOS).
#   config/weights_legacy_v6.yaml   — six criteria (no LOS).
# The v1.8 vector (seven criteria + coupling + ice) is the v2.1 vector
# with eva_psr_access renamed back to coupling and multi_volatile renamed
# back to ice.

illumination: 0.17
multi_volatile: 0.17
eva_psr_access: 0.17
los_to_earth: 0.14
slope: 0.12
thermal: 0.07
hazard: 0.06
seismic: 0.10