decontamination: training queries that overlap an evaluation set removed from the training tables (strict)

README.md

@@ -67,9 +67,9 @@ in this collection.
 | Score values | 1 ×6,821 |
 | Layout | `queries` · `corpus` · `qrels` · `hard-negatives` · `teacher-scores`, split `train`; `queries`/`qrels`/`hard-negatives` also carry `dev`, `test` — one shared corpus |
 | Splits | `corpus`: train · `hard-negatives`: train, dev, test · `judgments`: train · `qrels`: train, dev, test · `queries`: train, dev, test · `teacher-scores`: train |
-| Hard negatives | sources: `dataset`, `dense` · 10,243,224 rows |
-| Teacher scores | `jinaai/jina-reranker-v3.5` · 10,091,625 rows (positives included) |
-| Judgments | `judgments`: `typesafe/jev-1.13.0` · 2,913,969 rows |
+| Hard negatives | sources: `dataset`, `dense` · 10,242,620 rows |
+| Teacher scores | `jinaai/jina-reranker-v3.5` · 10,091,017 rows (positives included) |
+| Judgments | `judgments`: `typesafe/jev-1.13.0` · 2,913,796 rows |
 | Ids | `sha1(text)[:20]`; identical texts collapse to one document (849,330 collapsed) |
 | Pair recovery | 671,325 of 671,325 source pairs reconstructed from `queries` × `qrels` × `corpus` with byte-equal text |
 | Direction | symmetric source: the first text is the query, the second the document — a convention, both texts are in the corpus |
@@ -108,7 +108,7 @@ query set(s) below; queries without a labelled positive are left out.
 
 | configs | queries | hard negatives | teacher scores |
 |---|---:|---:|---:|
-| `hard-negatives` · `teacher-scores` | 100,000 (seeded sample, seed 1) | 10,243,224 (324,881 dataset, 9,918,343 dense) | 10,091,625 |
+| `hard-negatives` · `teacher-scores` | 99,994 (seeded sample, seed 1) | 10,242,620 (324,874 dataset, 9,917,746 dense) | 10,091,017 |
 
 ```python
 from datasets import load_dataset
@@ -126,7 +126,11 @@ scores    = load_dataset("Hyukkyu/train-all-nli", "teacher-scores", split="train
 
 | config | queries | rows | candidates per query | top-up rows | candidate cutoff | positive check |
 |---|---:|---:|---:|---:|---:|---|
-| `judgments` | 100,000 | 2,913,969 | 28.1 | 869,144 | 0.47 | < 0.15 |
+| `judgments` | 99,994 | 2,913,796 | 28.1 | 869,132 | 0.47 | < 0.15 |
+
+## Decontamination
+
+The training tables (`hard-negatives`, `teacher-scores`, `judgments`) leave out the sampled queries that overlap an evaluation set (6 of 100,000 sampled queries). A query was removed when it equals (normalised) or nearly copies an evaluation query (word 8-grams), or when a labelled positive equals an evaluation document or nearly copies a document that an evaluation query judges relevant (word 13-grams; a near copy shares at least half of the text's sampled shingles with one evaluation text). The evaluation side is the 23 test sets (BEIR, RTEB, LitSearch) and the 6 dev sets. `queries`, `corpus` and `qrels` remain the source's data as converted.
 
 ## Load it
 

hard-negatives/train-00000-of-00002.parquet

@@ -1,3 +1,3 @@
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hard-negatives/train-00001-of-00002.parquet

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judgments/train-00000-of-00001.parquet

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provenance.json

@@ -461,5 +461,28 @@
    "negatives_that_were_positives": 0,
    "negative_texts_byte_equal": 6086
   }
+ },
+ "decontamination": {
+  "date": "2026-10-02",
+  "rule": "strict",
+  "audit": "data/tmp/full_overlap_audit.py",
+  "configs": [
+   "hard-negatives",
+   "teacher-scores",
+   "judgments"
+  ],
+  "sources": {
+   "allnli": {
+    "source": "allnli",
+    "prefix": "",
+    "sampled": 100000,
+    "removed": 6,
+    "rows_removed": {
+     "hard-negatives": 604,
+     "teacher-scores": 608,
+     "judgments": 173
+    }
+   }
+  }
  }
 }

teacher-scores/train-00000-of-00002.parquet

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teacher-scores/train-00001-of-00002.parquet

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