Public

Neutron Diffraction — Public Tier

(5 scenes)

Full-access development tier with all data visible.

Measurements (y), ideal forward operator (H), spec ranges, ground truth (x_true), and true mismatch spec.

Load HDF5 → compare reconstruction vs x_true → check consistency → iterate.

Reconstructed signals (x_hat) and corrected spec as HDF5.

✓

True spec visible — use these exact values for Scenario III oracle reconstruction.

Parameter	Spec Range	True Value	Unit
wavelength_calibration	-0.02 – 0.04	0.01	-
absorption_correction	-2.0 – 4.0	1.0	-
texture/preferred_orientation	-4.0 – 8.0	2.0	-
tof_frame_overlap	-1.0 – 2.0	0.5	-

Method: CPU_baseline — Mismatch parameter: nominal

33.04 dB

SSIM 0.8313

22.80 dB

SSIM 0.4030

24.56 dB

SSIM 0.4982

Per-scene breakdown (4 scenes)

Scene	PSNR I	SSIM I	PSNR II	SSIM II	PSNR III	SSIM III
scene_00	32.90	0.8330	22.40	0.4133	24.52	0.5154
scene_01	32.93	0.8361	22.59	0.4422	24.50	0.5349
scene_02	33.03	0.8183	23.28	0.3763	24.65	0.4644
scene_03	33.32	0.8377	22.94	0.3802	24.59	0.4779

#	Method	Score	PSNR	SSIM	Consistency	Trust	Source
1	DiffFormer + gradient	0.747	30.12	0.919	0.89	✓ Certified	Diffraction pattern transformer, 2024
2	NeutronNet + gradient	0.735	28.74	0.895	0.95	✓ Certified	Neutron diffraction DL, 2023
3	Le Bail Fit + gradient	0.633	24.39	0.782	0.88	✓ Certified	Le Bail et al., Mater. Res. Bull. 1988
4	Rietveld-GSAS + gradient	0.575	21.74	0.679	0.93	✓ Certified	Rietveld, J. Appl. Cryst. 1969

y H_ideal spec_ranges x_true true_spec

Format: HDF5

Scenes: 5

0.4 × PSNR_norm + 0.4 × SSIM + 0.2 × (1 − ‖y − Ĥx̂‖/‖y‖)

PSNR: 40% SSIM: 40% Consistency: 20%