---
pretty_name: VisRO
license: cc-by-sa-4.0
task_categories:
- visual-question-answering
language:
- en
size_categories:
- 1M
VisRO-Core6, the six tasks of the paper's experiments: (a) in-distribution examples at different
difficulty levels and (b) out-of-distribution examples.
| Split | Per task | All 24 tasks | Difficulty levels |
|---|---:|---:|---|
| train | 100,000 | 2,400,000 | easy / medium / hard / xhard, 25,000 each |
| eval | 600 | 14,400 | easy / medium / hard / xhard, 150 each |
| ood | 600 | 14,400 | xxhard |
| Total | 101,200 | 2,428,800 | |
## Tasks
| Category | Tasks |
|---|---|
| discrimination_grouping | count_clusters, count_points_on_lines, find_the_different, find_the_same, find_the_shadow, overlap_match, overlapping_glyphs |
| paths_connectivity | flow_free, maze, metro_map, path_tracing |
| planar_transformations | jigsaw_completion, logic_matrix, mirroring_patterns, reconstruction, rotation_patterns, tangram_reconstruction |
| spatial_transformations | block_delta, count_3d_blocks, cube_unfold, paper_folding, three_d_views, view_reconstruction, viewpoint_rotation |
Per-task, per-split and per-difficulty counts are in `counts.json`.
## Layout
```text
README.md
schema.json
counts.json
SHA256SUMS
assets/visro.png
tasks///train/00000.tar ... 00019.tar
tasks///eval/00000.tar
tasks///ood/00000.tar
```
There are 528 uncompressed tar shards in [WebDataset](https://github.com/webdataset/webdataset) format. A training
shard holds 5,000 examples; an eval or ood shard holds 600. Each example is two consecutive members, `.json` (its
record) and `.png` (its image), where `` is the eight-digit index of its `id`; a shard holds nothing else.
The default configuration covers all 24 tasks with the splits `train`, `eval` and `ood`; each task also has a
configuration of its own, named after the task.
## Records
Every `.json` member holds one record that follows `schema.json`:
| Field | Meaning |
|---|---|
| `id` | `visro24///` |
| `task`, `category` | one of the 24 tasks and its category |
| `split` | `train`, `eval` or `ood` |
| `difficulty` | `easy`, `medium`, `hard`, `xhard` (train / eval) or `xxhard` (ood) |
| `question` | the question; it states the required answer format |
| `answer` | the reference answer, always a string |
| `answer_type` | `choice` (answer is one of `options`) or `free_form` |
| `options` | the answer options of a choice question; can also list suggested values; empty otherwise |
| `image` | the name of the image member in the shard, `.png` |
| `image_sha256`, `image_size` | the sha256 of the PNG bytes and `[width, height]` |
Examples are shuffled within a shard, so every shard mixes the difficulty levels.
## Read a shard
With `datasets` (the `png` member becomes an image, the `json` member the record):
```python
from datasets import load_dataset
maze_eval = load_dataset("Lyy0725/VisRO", "maze", split="eval")
row = maze_eval[0] # row["png"] (PIL image), row["json"] (the record), row["__key__"]
```
Or with the standard library:
```python
import json
import tarfile
with tarfile.open("00000.tar", "r:") as shard:
members = shard.getmembers()
for meta, image in zip(members[0::2], members[1::2]):
row = json.loads(shard.extractfile(meta).read())
png_bytes = shard.extractfile(image).read()
# row["question"], row["answer"], png_bytes
```
## Generating More Data
VisRO is a fixed release: its items were generated once, then given public ids and shuffled. The [generator code](https://github.com/Lyy-iiis/AdaLoop/tree/main/visro)
regenerates items of the same tasks, difficulty levels and record schema, byte for byte for a given task, level, split
and seed, but it does not re-create the published items one for one. The paper's experiments use the six core tasks
(count_clusters, flow_free, maze, metro_map, overlapping_glyphs, path_tracing).
## License and attribution
The dataset is released under CC BY-SA 4.0. The images contain icons from third-party collections, which keep their
own terms:
- [game-icons.net](https://game-icons.net) icons, CC BY 3.0, by game-icons.net and each icon's individual author;
- [OpenMoji](https://openmoji.org) graphics, CC BY-SA 4.0 (OpenMoji, the open-source emoji and icon project, HfG
Schwäbisch Gmünd and contributors); this share-alike term is why the dataset is CC BY-SA 4.0;
- [Microsoft Fluent UI Emoji](https://github.com/microsoft/fluentui-emoji), MIT, Microsoft Corporation;
- [Material Design Icons](https://pictogrammers.com/library/mdi/) by Pictogrammers, Apache 2.0.
Text in the images is rendered with the DejaVu Sans fonts. The code repository's [`NOTICE`](https://github.com/Lyy-iiis/AdaLoop/blob/main/NOTICE) lists every bundled
asset with its license and attribution.
## Citation
If you find this dataset useful in your research, please consider citing our paper :)
```bib
@article{adaloop2026,
title={AdaLoop: Thinking with the Vision Encoder},
author={Han, Xinran Nicole and Lu, Yiyang and Gan, Katelyn and Zickler, Todd},
journal={arXiv preprint arXiv:2610.21323},
year={2026}
}
```
## Checksums
`SHA256SUMS` lists the sha256 of every file in this repository except itself.