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feat: al.twins model builder and posterior recovery table (LensTwin 4a) #811

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Merged
Jammy2211 merged 2 commits into from
Oct 29, 2026
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feat: al.twins model builder and posterior recovery table (LensTwin 4a) #811

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334e08a
feat: al.twins model builder and posterior recovery table (LensTwin 4a)
Jammy2211 Oct 29, 2026
49c3655
fix: keep_shear handles external shear held in a MassField field
Jammy2211 Oct 29, 2026
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19 changes: 18 additions & 1 deletion autolens/twins/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,14 @@
Einstein radius (``einstein_radius_aperture_from``); ``compare`` and ``compare_to_data``
report what a transformation changed, and ``aplt.subplot_twin_comparison`` plots it.

``model.stellar_dark_model_from`` builds the model that fits a stellar-plus-dark twin
with the parameterization it was made with (fixed MGE light, one shared mass-to-light
ratio, a dark halo centred on the light, free external shear; broad fixed priors that
never know the truth), and ``recovery.recovery_table_from`` compares a fit's posterior
medians and ``sigma`` bounds with the twin's ``truth`` (a ``RecoveryTable`` with
``all_inside`` and ``to_csv``). Both map ``truth`` keys onto model paths through
``model.truth_paths_from``.

NumPy only: nothing here supports JAX.
"""

Expand All @@ -34,7 +42,9 @@
from autolens.twins.simulate import SimulatedTwin
from autolens.twins.aperture import einstein_radius_aperture_from
from autolens.twins.compare import TwinComparison, compare, compare_to_data
from autolens.twins import transform
from autolens.twins.model import stellar_dark_model_from, truth_paths_from
from autolens.twins.recovery import RecoveryRow, RecoveryTable, recovery_table_from
from autolens.twins import model, recovery, transform

__all__ = [
"ObservationSetup",
Expand All @@ -46,5 +56,12 @@
"compare",
"compare_to_data",
"einstein_radius_aperture_from",
"stellar_dark_model_from",
"truth_paths_from",
"RecoveryRow",
"RecoveryTable",
"recovery_table_from",
"model",
"recovery",
"transform",
]
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