---
language:
- en
license: cc-by-4.0
size_categories:
- n<1K
pretty_name: MIST
tags:
- video
- benchmark
- world-model
task_categories:
- other
configs:
- config_name: default
  data_files:
  - split: test
    path: data/mist_cards.jsonl
---

# MIST

43 Internal MIST case cards for delayed reveal. Each row names the scene setup, the hidden operation, the reveal query, and the state the last frame must show.

A low memory score is often a missed action. The scene can already be set, and the hidden interval can stay leak-free, while the asked change is never carried out. These cards are the task record for that split: setup, the hidden change, and reveal.

M3-Agent is a test-time rewrite of the missed move. It does not add a trained memory module. Keep-best is an oracle over the same score that reports the result.

## Load

```python
from datasets import load_dataset

cards = load_dataset("Wayne-King/MIST", split="test")
```

`data/mist_cards.json` is the same table in the `cases` shape read by the public control loop.

## Links

- Paper: https://arxiv.org/abs/2610.23542
- Hugging Face paper page: https://huggingface.co/papers/2610.23542
- Project page: https://hku-mmlab.github.io/MIST/
- Code: https://github.com/HKU-MMLab/MIST

## Fields

| Field | Meaning |
| --- | --- |
| `id` | Case id |
| `category` | `ISM-R0` content, `ISM-R1` binding, or `ISM-R2` operation history |
| `setup` | Scene before the change |
| `hidden_operation` | The change that must happen while it stays hidden |
| `reveal_query` | The later request to show the result |
| `expected_reveal` | What the last frame must show |
| `expected_present` / `expected_absent` / `expected_state` / `expected_count` | Scoring checks |

The reveal text does not name the hidden answer as a gold sentence. `expected_*` is the scoring key.