3D1: separately packaged basic and fancy cases

The two independent folders contain all 2,616 current human-approved cases and 2,976 questions. They have disjoint case, question and media sets. Failed or uncertain cases, historical versions, private gold answers, review notes and private source evidence are excluded.

Folder / configuration	Cases	Questions	Videos	Images
basic — 基础	1,892	2,252	2,078	99
fancy	724	724	724	0

fancy is identified by the original fancy source batches. basic contains the remaining approved cases: 1,882 main-library cases plus eight diversity and two catalog-40 cases. These are source groups, not new difficulty judgments.

Each folder has its own data/, media/, viewer/, evaluation/scorer.py, schema.json, manifest.json and README. There is no combined default table or shared media directory.

Load a subset

from datasets import load_dataset
basic = load_dataset("flymanss/3D1", "basic", split="unassigned")
fancy = load_dataset("flymanss/3D1", "fancy", split="unassigned")

Authenticate with an account permitted to access the repository if Hugging Face requires access. For local use, load basic/data/questions.parquet or fancy/data/questions.parquet with the Parquet loader.

Media paths in a table are relative to its subset folder. For example, a basic row's media/abc.mp4 resolves to basic/media/abc.mp4 in the repository. The tables store media records and paths, not Hugging Face Video features. Each subset is independently downloadable with snapshot_download(..., allow_patterns=["basic/**"]) or allow_patterns=["fancy/**"].

Questions and evaluation

Both tables retain the same 18-field schema and original bilingual questions, options and response schemas. English previews display questions, media and response formats without category headings or answers. Open basic/viewer/index.html or fancy/viewer/index.html after downloading the corresponding folder.

Responses must use the strict {"value": ...} JSON wrapper. Original option IDs are preserved, including historical non-English IDs. Gold answers are not included; the scoring code requires the separately held private gold.

Subset	Boolean	Single choice	Structured
Basic	1,073	477	702
Fancy	638	66	20

Validation and source notes

The split preserves every original row and media byte. Case IDs, sample IDs and media are disjoint between folders; their union exactly matches the approved source snapshot. JSONL, Parquet, preview and per-sample schemas are checked for consistency. Schema version 1.0 and scorer version 2.0 are preserved, and all rows remain split=unassigned. These folders are source subsets, not train/test partitions: two original split-group IDs occur in both subsets and are preserved for downstream leakage-aware splitting.

Missing geometry levels for 667 source cases were previously filled using an explicitly confirmed mapping; existing levels were preserved. Four preserved fancy question-wording issues are documented in fancy/README.md. No new license is assigned.