dataset card

README.md

@@ -1,5 +1,7 @@
 ---
-license: cc-by-4.0
+license: other
+license_name: parlir-eu-reuse
+license_link: https://huggingface.co/datasets/NaiveNeuron/parlir/blob/main/LICENSE-DATA.md
 language:
 - en
 - multilingual
@@ -84,9 +86,17 @@ audit records are under `v1.0/experiments/{runs,audit}/`.
 - `build_manifest.json`: counts and sha256 checksums.
 - LLM pooled-audit pools (sensitivity analysis only; reproducible from the sample seed and the runs).
 
-**Masking.** Headers are removed structurally; every question/answer identifier (including URL-embedded ids, hyphen
-variants, ids glued to a language code, and typo forms) is replaced by `[REF]`; term-8 PE-number footers and
-co-signatory/supporter lines are removed. The validator checks for identifiers independently of the masker.
+**Masking.** Headers are removed structurally; every question/answer identifier in the masker's forms (including
+URL-embedded ids, hyphen variants, ids glued to a language code, and typo forms) is replaced by `[REF]`; term-8
+PE-number footers and co-signatory/supporter lines are removed. The validator checks for identifiers independently
+of the masker. Known v1.0 residue (fixed in v1.1): rarer spellings survive in 255 queries (5 in test) and 48
+answers, none naming a dev/test citation target; `subject`, `header` and `raw_text` are unmasked (datasheet, "Known
+issues in v1.0").
+
+**Permitted inputs.** Systems may use only the `text` fields. Ids, dates, `header`, `subject`, `raw_text`,
+`source_url`, `answers` and the queries' `answer` field are forbidden: answer ids reuse the question id (that rule
+alone scores MRR@10 0.989) and a 0–180-day date window lifts BM25 from 0.547 to 0.760. Dates may be used only for the
+as-of filters of the citation tasks.
 
 Splits are temporal (train 2014–2021, dev 2022–2023, test 2024–2026); 2015 questions are dated from their XML
 header.