Transformer L18 Depth4 CC-XAttn LIBERO no-LoRA fullVLM
30k-step LIBERO finetuned checkpoint for the Transformer action-mixer ablation with token-level ctxD cross-attention.
Checkpoint
- OpenPI config:
pi05_transformer_ctxd18_crossattn_fullvlm_libero_5090 - Experiment:
icra_nolora_fullvlm_transformer_crossattn_l18_depth4_cosine5e5_5e6_b16_acc1_seed42 - Step:
30000 - Initializer:
pi05_base_pytorch - Adaptation: full VLM / full vision / full action path, no LoRA
- VLM prefix: L18
- Mixer: Transformer depth4
- Context interface: CC-XAttn, token-level ctxD cross-attention
- Training: batch 16, grad accumulation 1, seed 42
- LR schedule: cosine from
5e-5to5e-6over 30k steps - LIBERO eval: seed 7, 50 trials per task, 10 denoising steps
LIBERO Results
| Mixer | Context | Spatial | Object | Goal | LIBERO-10 | Average | Action expert core | Train time | Median latency |
|---|---|---|---|---|---|---|---|---|---|
| Transformer | CC-XAttn | 75.2 | 82.8 | 75.8 | 68.6 | 75.6 | 0.018B | 13.72 h | 85.60 ms |
Use
--config-name pi05_transformer_ctxd18_crossattn_fullvlm_libero_5090
--checkpoint-dir /path/to/checkpoint
The checkpoint includes the LIBERO norm stats under assets/physical-intelligence/libero.