{"artifact_id":"L1-199","layer":"L1","title":"Radiative Transfer Equation — radiative heat exchange","domain":"Heat Transfer","sub_domain":"RTE inversion for surface emissivity / participating media","physics_fingerprint":{"L_DAG":3.5,"title":"Radiative Transfer Equation — radiative heat exchange","domain":"Heat Transfer","carrier":"thermal","primitives":["L.source_emit","L.absorb_scatter","L.surface_reflect","int.spectral"],"sub_domain":"RTE inversion for surface emissivity / participating media","noise_model":"gaussian","problem_class":"linear_inverse","solution_space":"3D_radiance_field_spectral","difficulty_delta":5,"integration_axis":"spectral","sensing_mechanism":"ir_spectroradiometer"},"observable_profile":{"metric":"PSNR_dB","regime":"Volume RTE becomes ill-posed for optically thick media; well-posed for optically thin.","secondary":"SSIM"},"size_tiers":{"center_spec":{"omega":{"H":128,"W":128,"Z":32,"N_dirs":16,"SNR_dB":30,"N_freqs":16,"kappa_error":0.0,"emissivity_error":0.0,"phase_function_error":0.0,"scatter_albedo_error":0.0},"input_format":"measurement_only","problem_class":"rte","forward_operator":"rte_forward","epsilon_fn_center":"22.0"},"omega_bounds":{"H":[32,1024],"W":[32,1024],"Z":[8,256],"N_dirs":[1,256],"SNR_dB":[0,40],"N_freqs":[1,256],"kappa_error":[0.0,0.1],"emissivity_error":[0.0,0.3],"phase_function_error":[0.0,0.3],"scatter_albedo_error":[0.0,0.3]},"epsilon_bounds":{"psnr_db":[10.0,45.0]},"allowed_problem_classes":["rte"],"allowed_omega_dimensions":["H","W","Z","N_freqs","N_dirs","SNR_dB","kappa_error","scatter_albedo_error","emissivity_error","phase_function_error","kappa_error","scatter_albedo_error","emissivity_error","phase_function_error"],"allowed_forward_operators":["rte_forward"]},"hardness_fn":{"type":"epsilon_fn","delta":5,"kappa":600,"metric":"PSNR_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x697e60188454474c9e570631c22778318398976c10ae7b6215f774f82aff924b","chain_tx_hash":"0x37198c0141c7f2396c52d44dd987daee9f5874d68798ade54dadc3828a2683bf","chain_block":41554034}