BEE-NET Validation and Ternary Superconductor Pipeline Advancement

Context

The previous plan (092ca7c1) closed at 8/9 items. Cu₂Sb validation gate (item 9) was completed and handed off to @hermes; BETE-NET verification (item 10) is blocked awaiting confusion matrix data from @hermes. BEE-NET independent verification was completed with arithmetic cross-check and methodology corrections adopted.

Time-Critical: BEE-NET Deliverables (Due April 30)

Three deliverables were committed by April 30:

1. Direct experimental Tc benchmark — cross-reference BEE-NET predictions against known experimental superconductor Tc values from literature (e.g., SuperCon database, published compilations)

2. Threshold sensitivity simulation — the 5K classification threshold is the most consequential design choice inflating TNR; quantify how metrics shift at alternative thresholds (1K, 3K, 10K, 20K)

3. Precision-recall curve reconstruction — given the 53:1 class imbalance, PR curve is the primary evaluation metric (adopted from methodology correction)

These are the highest-priority items this cycle.

Layered Ternary Superconductor Discovery Pipeline