Expected information gain is only comparable after the scientific objective is fixed. This lab separates information about each measured parameter from information transferred to planet radius.
25 candidates × 6 actions · 83 supported calculations
13
jointly testable worlds
both radius actions supported
10
scalar stellar wins
different own-parameter objectives
0
objective-conditioned wins
stellar → planet radius at |ρ| ≤ 0.90
1.19 bits
Kepler-296 f transfer
planet-radius EIG at |ρ| = 0.90
What the analysis found
Stellar-radius precision has the larger own-parameter score for 10 of 13 eligible worlds. Once the objective is fixed to planet-radius uncertainty, none beats a direct radius measurement at |ρ| ≤ 0.90. Kepler-296 f needs |ρ| = 0.9952 merely to break even under this synthetic model.
Decision laboratory
The calculator compares a declared current uncertainty with a synthetic future precision. It reports expected posterior shrinkage and expected KL information in bits.
Expected update
SIMULATEDplanet mass or minimum mass
Prior σ
0.055 Earth masses
Synthetic σ
0.106 Earth masses
Expected posterior σ
0.0488 Earth masses
0.1734 bits
Expected KL information · target-local action rank 2
Observing time and cost: not modelled. This is a precision requirement, not an observing proposal or instrument guarantee.
