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README.md

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+---
+language:
+- en
+license: unknown
+size_categories:
+- 1K<n<10K
+configs:
+- config_name: structured_WIP
+  data_files:
+  - split: train
+    path: "tildes.parquet"
+---
+
+<div style="
+  display: inline-block;
+  width: fit-content;
+  max-width: 100%;
+  background: #0b0f14;
+  border: 1px solid #223044;
+  border-left: 5px solid #20c997;
+  border-radius: 8px;
+  padding: 14px 18px;
+  margin-bottom: 20px;
+  color: #e6edf3;
+  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;
+  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
+">
+  <p style="
+    margin: 0 0 6px 0;
+    color: #8aa2bd;
+    font-size: 12px;
+    line-height: 1.4;
+    text-transform: uppercase;
+  ">codex dataset card</p>
+  <p style="
+    margin: 0;
+    color: #e6edf3;
+    font-size: 15px;
+    font-weight: 650;
+    line-height: 1.45;
+  "><span style="color:#20c997;">&gt;</span> generated by <span style="color:#ffffff;">Codex</span><span style="color:#20c997;">_</span></p>
+</div>
+
+# Dataset Card for tildes-structured_WIP
+
+## Dataset Summary
+
+This is a partial, structurally validated supervised fine-tuning dataset derived
+from the Tildes thread-only curation pipeline. It was generated from the first
+3,884 checkpointed source topics of the `full_v1` run and contains 2,577 usable
+training records after root curation, input-author subtree scrubbing, and
+post-scrub trainability checks.
+
+The intended training shape is:
+
+- `input`: a source-only, user-like root prompt.
+- `discussion.nodes`: a multi-author tree/forest of source discussion posts.
+- `metadata`: provenance, curation, and audit fields not intended as model
+  input.
+
+There is no final-answer or `output` target. The intended SFT task is
+`input -> discussion`.
+
+This preflight slice is suitable for testing training templates, data loaders,
+upload tooling, and downstream dataset consumers. It should not be treated as
+the final `full_v1` dataset.
+
+## Dataset Details
+
+- **Language:** English
+- **Source website:** https://tildes.net
+- **Source crawl date:** 2026-05-03
+- **Derived split:** `structured_preflight_3884`
+- **Primary data file:** `tildes.parquet`
+- **Companion source JSONL:** `tildes.jsonl`
+- **Records:** 2,577
+- **Discussion nodes:** 26,789
+- **Blank discussion nodes:** 5
+- **Rows with `output` field:** 0
+- **Rows with `u0` in `discussion.nodes`:** 0
+
+Root policy counts:
+
+| Root policy | Records |
+|---|---:|
+| `topic_root` | 903 |
+| `standalone_top_level` | 1,178 |
+| `topic_context_top_level` | 496 |
+
+Split status counts:
+
+| Split status | Records |
+|---|---:|
+| `original` | 903 |
+| `split` | 1,674 |
+
+Text volume:
+
+| Metric | Value |
+|---|---:|
+| Input characters | 2,478,840 |
+| Input nonblank characters | 2,034,051 |
+| Discussion node characters | 16,136,506 |
+| Discussion node nonblank characters | 13,238,627 |
+| Minimum discussion nodes per record | 1 |
+| Maximum discussion nodes per record | 275 |
+
+Parquet conversion:
+
+| Metric | Value |
+|---|---:|
+| Parquet file size | 8.0 MB |
+| Rows | 2,577 |
+| Row groups | 1 |
+| Max uncompressed row group size | 18.5 MB |
+| Compression | ZSTD |
+
+## Dataset Structure
+
+Each row has the following top-level fields:
+
+| Field | Type | Description |
+|---|---|---|
+| `input` | string | Source-only prompt intended to read like something a person might ask an assistant |
+| `discussion.nodes` | list<object> | Source discussion tree/forest after input-author subtree scrubbing |
+| `metadata` | object | Source, curation, filtering, and audit metadata |
+
+Each discussion node has:
+
+| Field | Type | Description |
+|---|---|---|
+| `id` | string | Per-example node ID, reindexed as `n0`, `n1`, etc. |
+| `parent` | string or null | Parent node ID inside the same example |
+| `author` | string | Per-example anonymised author ID starting at `u1` |
+| `content` | string | Source comment body text |
+
+Important format choices:
+
+- The root/user prompt is stored as `input`, not as a discussion node.
+- Discussion node authors start at `u1`; `u0` is reserved conceptually for the
+  prompt author and does not appear in `discussion.nodes`.
+- New rows omit `output` entirely.
+- `metadata` is for auditing and curation; it is not intended as model input.
+
+## Uses
+
+This preflight slice is most appropriate for:
+
+- smoke-testing SFT data loaders and chat templates,
+- validating Parquet upload and viewer behavior,
+- running small pilot training jobs,
+- checking downstream consumers before the full dataset is generated.
+
+It is not intended as:
+
+- the final `full_v1` dataset,
+- a complete assistant instruction-following dataset,
+- a final-answer or QA dataset,
+- a safety-filtered assistant dataset,
+- a factual benchmark.
+
+## Bias, Risks, and Limitations
+
+The dataset inherits the risks of the public Tildes crawl, including offensive
+language, misinformation, sensitive topics, copyrighted quotations, and
+personally identifying information inside post content.
+
+The source text is anonymised only in structured `author` fields. Exact source
+text, URLs, topic IDs, quotations, names, or handles may still appear in content
+or metadata.
+
+DeepSeek was used only for root and branch appraisal. It did not generate,
+rewrite, summarise, or trim training text. However, its decisions influence
+which records appear in this slice.
+
+Because this is a partial preflight slice, distributions by topic, group,
+prompt style, and discussion shape may differ from the final full run.
+
+## License and Redistribution
+
+No license was identified for the source forum content. This derived dataset is
+therefore marked as `license: unknown`.
+
+The dataset consists of transformed public forum posts authored by third
+parties. Users are responsible for determining whether their intended use is
+lawful, including with respect to copyright, privacy, data protection, and
+platform terms.