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README.md

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+---
+license: other
+license_name: redistributed-with-permission
+license_link: https://huggingface.co/datasets/kevinLian/LoopNav
+pretty_name: FAR datasets (LoopNav)
+tags:
+- world-model
+- navigation
+- minecraft
+- latent
+- loopnav
+---
+
+# FAR datasets (LoopNav)
+
+Pre-computed latents of the **LoopNav** Minecraft loop-navigation benchmark, exactly as used to
+train and evaluate **FAR**, a latent-diffusion world model with a learned, action-conditioned
+retrieval memory.
+
+> **Please cite LoopNav when you use this data**:
+> [LoopNav: Benchmarking Spatial Consistency in World Models](https://arxiv.org/abs/2505.22976)
+> (Lian, Cai, Liang and Liu, 2025). BibTeX below.
+
+- LoopNav (original videos): https://huggingface.co/datasets/kevinLian/LoopNav
+- FAR paper: [Learning What to Recall: Adaptive Multi-Cue Episodic Memory for World Models](https://arxiv.org/abs/2609.34677)
+- Code: https://github.com/sony/far
+- Checkpoints: https://huggingface.co/1202kbs/FAR-Checkpoints
+- Other FAR corpora: [AI2-THOR](https://huggingface.co/datasets/1202kbs/FAR-Datasets-AI2THOR), [SoundSpaces](https://huggingface.co/datasets/1202kbs/FAR-Datasets-SoundSpaces) (gated)
+
+## Which LoopNav release this is
+
+These latents were encoded from the LoopNav release as it stood in **May 2026**. On
+2026-09-28 the LoopNav repository was refreshed: the ABA trajectories were re-recorded, some
+ABCA trajectories were replaced, a TURN subset and official train / val / test splits were
+added, and the earlier release is no longer downloadable. The clips here therefore differ from
+the current `kevinLian/LoopNav`, and the train / test split below is FAR's own, not the new
+official one. This repository preserves the exact corpus behind the FAR paper's LoopNav results.
+
+## Layout
+
+Everything is stored at the path the code expects, relative to the repository root:
+
+```
+loopnav/demo.tar, test-NNN.tar, train-NNN.tar   # tar shards; members are datasets/loopnav/latent/<route>/<world>/<radius>/<clip>.*
+results/manifests/loopnav/*.json                 # manifest (loopnav_latent.json; *_split.json carries the split field)
+results/indices/loopnav/*.json                   # train / test indices
+datasets.json                                    # every shard and file with size, SHA-256 and clip count
+```
+
+Shards are plain uncompressed tar files: `tar -xf <shard> -C <repo>` puts the clips in place.
+`demo` is a subset of `test`; `test` and `train` are disjoint.
+
+## Download
+
+With the code checked out (fetches the shards, verifies them and extracts them once):
+
+```bash
+python scripts/download_release.py --no-models --data demo  --corpus loopnav   # the rollout-demo / figure clips
+python scripts/download_release.py --no-models --data test  --corpus loopnav   # the test split
+python scripts/download_release.py --no-models --data train --corpus loopnav   # test + train
+```
+
+## Contents
+
+19,200 first-person Minecraft clips at 20 fps: 9,600 ABA (A→B→A) and 9,600 ABCA (A→B→C→A)
+out-and-back routes in village worlds of six biomes (desert, plains, savanna, snowy, taiga, zombie), with navigation-range tiers of 5, 15,
+30 and 50 blocks. FAR's split: 15,360 train and 3,840 test clips.
+
+| Tier | Clips | Shards | Size |
+|---|---|---|---|
+| `demo` (the 782 rollout-demo / figure clips) | 782 | `loopnav/demo.tar` (1) | 25.0 GB |
+| `test` (test split) | 3,840 | `loopnav/test-000.tar`, `loopnav/test-001.tar` .. (5) | 94.5 GB |
+| `train` (train split) | 15,360 | `loopnav/train-000.tar`, `loopnav/train-001.tar` .. (19) | 379.4 GB |
+
+Per clip (`datasets/loopnav/latent/<route>/<world>/<radius>/<stamp>.*`):
+
+| File | Shape | Contents |
+|---|---|---|
+| `<stamp>.npy` | (T, 16, 18, 32) float32 | latents from the frozen Oasis 500M ViT-VAE (`models/oasis_500m_vit_vae.pth`), at its tokenizer scale 0.0784 |
+| `<stamp>.json` | list of T dicts | LoopNav's per-frame log, unchanged: position `x, y, z`, `yaw`, `pitch`, the `action` record, the `goal`, `frame_count` and `extra_info` (seed, world, route, range) |
+| `<stamp>.keys_jepa.npy` | (T, 256) float32 | cached retriever keys used by the FAR arms |
+| `<stamp>.keys_longlive.npy` | (T, 256) float32 | cached keys of the LongLive-style retrieval baseline |
+| `<stamp>.keys.npy` | (T, 256) float32 | the dataset config's default key set |
+
+## License and attribution
+
+The LoopNav videos and logs belong to their authors; this derived corpus (latents, keys and the
+unchanged per-frame logs) is **redistributed with the LoopNav authors' permission**. Please cite
+LoopNav whenever you use it, and FAR if you use the latents, keys or split. The content is
+Minecraft footage (Minecraft is a trademark of Mojang Synergies AB; this corpus is not affiliated
+with or endorsed by Mojang or Microsoft). The latents were encoded with the Oasis 500M ViT-VAE
+([open-oasis](https://github.com/etched-ai/open-oasis), MIT license).
+
+## Citation
+
+```bibtex
+@article{lian2025loopnav,
+  title   = {LoopNav: Benchmarking Spatial Consistency in World Models},
+  author  = {Lian, Kewei and Cai, Shaofei and Liang, Yitao and Liu, Anji},
+  journal = {arXiv preprint arXiv:2505.22976},
+  year    = {2025},
+  url     = {https://arxiv.org/abs/2505.22976}
+}
+
+@article{kim2026far,
+  title   = {Learning What to Recall: Adaptive Multi-Cue Episodic Memory for World Models},
+  author  = {Kim, Beomsu and Lai, Chieh-Hsin and Nguyen, Bac and Bar, Amir and Ye, Jong Chul and Mitsufuji, Yuki},
+  journal = {arXiv preprint arXiv:2609.34677},
+  year    = {2026},
+  url     = {https://arxiv.org/abs/2609.34677}
+}
+```
+

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