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README.md

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+---
+license: cc-by-nc-4.0
+tags: [world-model, vlm-gym, bagel-7b-mot, maze2d]
+---
+# maze2d_easy_native256_noncot_chunk_k10_world_model_20260707_perseg  (EMA, bf16)
+
+Fine-tuned **BAGEL-7B-MoT** action-conditioned visual world model — Maze2d (native 256px, JPEG q95; navigation with stop-required success, easy→hard split).
+Step-5000 EMA weights, **cast fp32 → bfloat16** (inference runs in bf16 autocast — lossless for
+inference). No optimizer state; not a training-resume checkpoint.
+
+- **Load into** the BAGEL-7B-MoT architecture (base: `ByteDance-Seed/BAGEL-7B-MoT`).
+- **Training data:** `ultrastar111/maze2d_easy_native256_noncot_chunk_k10_20260707_perseg`
+- **Recipe:** cold start from vanilla BAGEL, lr 2e-5, cosine, warmup 300, 5000 steps, 40k-token
+  packing (maze2d cot-K1: 24k), EMA 0.993.
+- **Eval contract:** CoT ckpts need the per-segment decoder (`BAGEL_DECODER=perseg`) + CFG off.
+- License: CC-BY-NC-4.0 (research use).
+
+<details><summary>training_data_manifest.txt</summary>
+
+```
+STUDY:    Maze2D K-action-chunk feedback-interval (noncot, K=10, difficulty=easy; GT env-feedback re-grounding except K=inf)
+data:     /data/home/raychai/hf_datasets/maze2d_easy_native256_noncot_chunk_k10_20260707_perseg/training (q95 baked in; maze2d instruction incl. total-budget + cadence baked in by remap)
+config:   ./data/configs/vlm_gym_maze2d_imagined_cot_envfb_train.yaml (envfb loader 'interleaved_cot_envfb', data-dir overridden)
+init:     VANILLA /home/jiaxin/unified_world_model/pretrained/BAGEL-7B-MoT (EMA); hparams lr2e-5/warmup100/cosine/total5000/tokens50000/ema0.993/save1000; probe OFF
+git_rev:  0c4fc0786a9c30bfcb8d442261717c0e8d46760c
+
+```
+</details>

ema.safetensors

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+oid sha256:52f39d331aa20b87fd25fd5043770b2de554ebd89a8170e057a2a68780215f8d
+size 29214685424

training_data_manifest.txt

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+STUDY:    Maze2D K-action-chunk feedback-interval (noncot, K=10, difficulty=easy; GT env-feedback re-grounding except K=inf)
+data:     /data/home/raychai/hf_datasets/maze2d_easy_native256_noncot_chunk_k10_20260707_perseg/training (q95 baked in; maze2d instruction incl. total-budget + cadence baked in by remap)
+config:   ./data/configs/vlm_gym_maze2d_imagined_cot_envfb_train.yaml (envfb loader 'interleaved_cot_envfb', data-dir overridden)
+init:     VANILLA /home/jiaxin/unified_world_model/pretrained/BAGEL-7B-MoT (EMA); hparams lr2e-5/warmup100/cosine/total5000/tokens50000/ema0.993/save1000; probe OFF
+git_rev:  0c4fc0786a9c30bfcb8d442261717c0e8d46760c