DD-006B
Joint Truthful Discovery Mechanisms
Exact normalized joint-score frontier separating observable strict implementation from the hidden-action boundary.
Completed finite studyChecked independently
The question
Can a normalized mechanism combining an exact proper information score with coverage and obedience components strictly implement truthful reporting and a differentiated search recommendation in the registered two-agent fixture?
What we found
- DD-C-0053: In DD-006B's 60-row normalized joint-mechanism census, 16 rows strictly implement truthful reporting and the differentiated recommendation for both fixed tie roles; three use an active positive quadratic-score component, the maximum exact all-tie margin is 13/72, and the target-observable/action-hidden regime has no weak row.
What this result covers
Checked independently. The formal evidence wording and registry state remain available below.
Technical details
- Study phase
complete-bounded-study- Registry status
complete-bounded-study- Evidence status
exact-joint-deviation-accounting-and-independent-evaluator-frontier
Reproducible evidence
20260721T165512Z_DD-006B_f022a1a5_3be21d0b9b
Files and data
What comes next
preserve the registered strict and hidden-action regressions; global equilibrium enumeration or budget-balanced mechanisms require a new registration