# Polish Wikipedia talk pages (namespaces 1+5) - CC BY-SA 4.0

This slice is rebuilt deterministically from the pinned official Wikimedia dump
`plwiki-20260901-pages-meta-current` (7 sha1-verified shards;
https://dumps.wikimedia.org/plwiki/20260901/). Scope is namespaces 1
(article talk) and 5 (project talk); mainspace (ns=0) is covered by the existing
`wikipedia` shard and user-talk (ns=3) is excluded by scope decision (not
measured). This is conversational written Polish - editorial disputes,
coordination, questions and answers - a register otherwise nearly absent from
the corpus.

- Non-redirect talk pages enumerated: 544,591
- Source slice retained after QA/dedup: 43,054
- Proposed records: 43,054
- Proposed tokens: 55,568,733 (`cl100k_base` proxy)
- Characters: 144,604,697
- License: CC BY-SA 4.0 per record (Wikimedia Terms of Use section 7: https://foundation.wikimedia.org/w/index.php?title=Policy:Terms_of_Use/pl&oldid=584706)
- Immutable source snapshot: https://huggingface.co/datasets/PiotrSty/plwiki-talk-pages/tree/20c74a6da0cbaef5d2a644d0accf7e90262ea24c

Per-record page id, title, namespace, last-revision timestamp and canonical URL
are preserved; page history is the contributor-attribution trail. Wikitext is
stripped with mwparserfromhell; lines occurring in >=1% of documents are removed
as cross-document boilerplate; emails, labelled phones, IP literals, labelled
national identifiers and 26-digit account candidates are redacted (pattern
redaction is not complete anonymization); exact and near deduplication applied
within source. The user-talk namespace (ns=3) is excluded by scope decision;
its quality was not measured.

## What the texts are (user-generated)

These are **user-generated** wiki talk pages: discussion between volunteer
editors about article content (ns=1, article talk) and about the project itself
(ns=5, "Dyskusja Wikipedii" - policies, classifications, deletion debates).
Genre: editorial discussion - source requests, wording and naming disputes,
style fixes, merge/delete debates, project-wide consultations. Register:
informal written Polish with typos, wiki jargon ("WP:OR", "SDU"), signed
comments (`user name + timestamp`). Not OCR'd, not machine-translated. Record
model: one whole talk page; comments are not split.

Time span: per-record `created` is the dump last-revision date (2003-02-13 –
2026-09-01 across 43,054 records); the talk activity itself spans the whole
life of plwiki (ns split: 41,828 article-talk pages, 1,226 project-talk pages).

## Scrubber and residual-PII spot check

Scrubber that ran: **pattern redaction in `src/build_plwiki_talk_pl.py`** -
e-mail, labelled phone (`telefon`/`tel.`/`phone`), IPv4, parsed IPv6 (incl.
compressed notation), labelled PESEL/NIP/REGON, 26-digit account candidates ->
`[REDACTED:*]`. This is **not**
[SlayerLab/NERGAL](https://huggingface.co/SlayerLab/NERGAL); these are
user-generated talk pages, so the shard must be re-run through NERGAL before it
is admitted to a release.

Residual-PII spot check (deterministic sample of 60 records, seed 20260928):
25 `[REDACTED:IP]` placeholders remain as evidence of the applied redaction
(including unregistered editors' signatures); the single long-digit-run hit is
an academic DOI citation (`10.1017/9781108668675.006`) - not PII; all other
residual classes (26-digit runs, IBAN-like, unlabelled IPs, e-mail-like incl.
obfuscated "at"/"malpa" forms, `ul.`/`al.`/`os.` street cues, GG/ICQ/Skype,
PESEL mentions) have 0 hits. Manual reading of 8 sampled records found only
public wiki attribution and editorial discussion - no private personal data.
Residual risk low but non-zero (60 of 43,054 records, 0.14%), which is why the
NERGAL pass stays a release gate.

## Inclusion argument

What this adds that `wikipedia` does not: the editorial process around the
articles - talk pages where editors argue about sources, wording, naming,
merges and deletions. That is conversational, multi-voice, disagreement-laden
Polish; the `wikipedia` shard holds only the finished encyclopedic prose. The
namespace partition is exact: `wikipedia` = ns 0, this slice = ns 1+5,
`plwiki_user_talk` (PR #40) = ns 3 - no page is in two slices, and the text
overlap numbers below quantify what still repeats across them.

## Text overlap with the wikipedia / plwiki_user_talk shards (review audit)

Measured post-build by normalized exact-line and exact-paragraph containment
(64-bit blake2b; lines >= 30 chars, paragraphs >= 100 chars; exact-verbatim
only):

- vs `wikipedia` (ns 0): 418 of 567,171 talk lines match (75,163 chars =
  **0.053%** of this slice's line chars); 1 paragraph (271 chars). Verbatim
  article quoting in talk pages is negligible at this unit size.
- vs `plwiki_user_talk` (ns 3): 5,556 lines match (1,207,378 chars = **0.85%**);
  1,111 paragraphs (547,695 chars = **0.39%**); 1,965 of 43,054 records (4.6%)
  contain at least one matched line. The matched lines are almost all
  page-unique (4,941 of 5,138 distinct matched lines occur on exactly one talk
  page) - genuine thread fragments mirrored between article talk and user talk,
  not template duplication.

Integration gate: cross-shard verbatim dedup at integration would move ~0.9% of
chars; no other treatment needed. Method and numbers are in the review thread
(`overlap_check_pr36.py`, `overlap_pr36.json`).

Limitations: talk pages are informal (typos, edit disputes, occasional vandalism);
comments may quote article text (measured at review: 0.053% of chars match the
`wikipedia` shard verbatim at line level; 0.85% matches `plwiki_user_talk`, almost
all page-unique thread fragments);
Record model is a whole talk page; comments are not split.