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bca9805 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | # mimic-shards-v2
Pre-built training shards for [MIMIC](https://github.com/erickfm/MIMIC) —
behavior-cloned Super Smash Bros. Melee bots. Derived from the raw ranked
replays in `erickfm/melee-ranked-replays`; this repo is the cached tensor
form so training pods never rebuild from `.slp`.
## Layout
One folder per character (23 total: 22 roster characters + `fox/`). Each
folder is directly usable as a MIMIC `--data-dir`:
```
<char>/
train_shard_*.pt # per-game v2 tensor shards
val_shard_*.pt # 10% held-out split (seed 42, split by file)
tensor_manifest.json # shard lists + game/frame counts
mimic_norm.json, norm_stats.json, cat_maps.json,
stick_clusters.json, controller_combos.json
```
## Build provenance (2026-07-19)
- **Master-rank filtered**: per-port rank recovered from `netplay.name`; a
game is kept iff every target-character port is Master
(`tools/filter_masterchar.py`). Zelda, Pichu, and Kirby are absent —
fewer than 300 master-rank games exist for them.
- **v2 target alignment**: `target[i] = buttons[i+1]` (train with
`--reaction-delay 0`, no controller offset).
- **Nearest-of-9 c-stick history** (MIMIC commit `fb7bb1a`) — history,
targets, and inference all share one encoding.
- **Majority-vote character filter** (commit `01eb974`) — Sheik/Zelda
transform-safe.
- **7-class buttons** (A, B, Z, JUMP, TRIG, A_TRIG, NONE).
- `fox/` uses the fox-master champion's norm files (md5-identical lineage);
other characters use fresh per-character norms; hal37 stick clusters
throughout. Fox: 97,490 train / 10,861 val perspectives (941.6M train
frames) from 102,301 master games.
## Usage
```bash
hf download erickfm/mimic-shards-v2 --repo-type dataset \
--include "falco/*" --local-dir data/
python3 train.py --data-dir data/falco ... # see MIMIC repo for the recipe
```
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