btx-e001 T-2: shunt fidelity ledger — cloze-BERT byte marginal hits 0.43-0.61 gold; flan-t5 sentinel infill 0.05-0.09; n:m cells crater both

t2_shunt_ledger.json

@@ -0,0 +1,47 @@
+{
+ "arith:1x1": {
+  "n": 395,
+  "tv_mean": 0.7441,
+  "top_byte_agree": 0.0658,
+  "gold_hit_t5": 0.0532,
+  "gold_hit_bert": 0.4329,
+  "gold_hit_bert_folded": 0.5266,
+  "dropped_mass_t5": 0.1281,
+  "dropped_mass_bert": 7e-05
+ },
+ "arith:nm": {
+  "n": 205,
+  "tv_mean": 0.5921,
+  "top_byte_agree": 0.1415,
+  "gold_hit_t5": 0.0488,
+  "gold_hit_bert": 0.1073,
+  "gold_hit_bert_folded": 0.1073,
+  "dropped_mass_t5": 0.13748,
+  "dropped_mass_bert": 0.00017
+ },
+ "story:1x1": {
+  "n": 493,
+  "tv_mean": 0.7606,
+  "top_byte_agree": 0.0649,
+  "gold_hit_t5": 0.0649,
+  "gold_hit_bert": 0.5274,
+  "gold_hit_bert_folded": 0.6085,
+  "dropped_mass_t5": 0.01416,
+  "dropped_mass_bert": 0.0
+ },
+ "story:nm": {
+  "n": 107,
+  "tv_mean": 0.7416,
+  "top_byte_agree": 0.0935,
+  "gold_hit_t5": 0.0935,
+  "gold_hit_bert": 0.1402,
+  "gold_hit_bert_folded": 0.5047,
+  "dropped_mass_t5": 0.01559,
+  "dropped_mass_bert": 0.0
+ },
+ "_protocol": {
+  "wordpiece_model": "google/bert_uncased_L-4_H-256_A-4",
+  "swap_reason": "TinyBERT_General_4L_312D is HEADLESS (random MLM top-5 at gate); miniature vocab asserted identical to the tinybert table vocab",
+  "gauge": "first-content-byte marginal via table pushforward; TV + top-byte agreement + gold-byte hit; cloze symmetric (t5 extra_id infill vs bert single-MASK)"
+ }
+}