Add filtered config (two-voice LASER+LaBSE filter, v8): metadata.json

metadata.json

@@ -28,11 +28,20 @@
         "encoder_ru": "laser2",
         "embedding_dim": 1024,
         "knn_k": 4,
-        "note": "laser_margin uses same-language kNN, laser_margin_xling uses cross-lingual kNN and is the recommended filter score",
-        "recommended_filters": {
-          "strict": "keep laser_margin_xling >= 0.90 AND laser_cos >= 0.70 (removes 6.6%)",
-          "conservative": "keep laser_margin_xling >= 0.85 AND laser_cos >= 0.65 (removes 3.8%)"
-        }
+        "note": "laser_margin uses same-language kNN, laser_margin_xling uses cross-lingual kNN and is the recommended LASER filter score"
+      }
+    },
+    "filtered": {
+      "file": "filtered/data.parquet",
+      "version": "v8",
+      "rows": 69706,
+      "columns": ["ba_title", "ru_title", "section", "ba", "ru", "ba_sentence_index", "ru_sentence_index", "laser_cos", "laser_margin", "laser_margin_xling", "labse_cos", "labse_margin_xling"],
+      "filter": {
+        "name": "two_voice_both_low",
+        "rule": "drop if laser_margin_xling < 0.876 AND labse_margin_xling < 0.723 (bottom 5% of both scorers)",
+        "rows_dropped": 2301,
+        "encoders": ["laser3-bak_Cyrl.v1 + laser2 (LASER3/LASER2, dim 1024)", "sentence-transformers/LaBSE (dim 768, fp16)"],
+        "design": "pairs removed only when two independent encoders agree on rejection; all score columns retained for auditability"
       }
     }
   }