CKT-WAM: ワールドアクションモデル間のパラメータ効率的な文脈知識転送
CKT-WAM: Parameter-Efficient Context Knowledge Transfer Between World Action Models
異なるワールドアクションモデル間で知識を転送する際、テキスト埋め込み空間のコンパクトな文脈を用いて、軽量なアダプタと圧縮機構で教師モデルの知識を生徒モデルに注入する手法を提案。LIBERO-Plusで1.17%の学習可能パラメータで86.1%の成功率を達成。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
3. 技術・手法の肝は?
4. どうやって有効だと検証した?
5. 議論はある?
6. 次に読むべき論文は?
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著者: Yuhua Jiang, Yijun Guo, Hongbing Yang, Guojun Lei, Nuo Chen, Yinuo Zhang, Shaoqiang Yan, Bo Lin, Feifei Gao, Biqing Qi
分類: cs.RO
原文アブストラクト
World action models (WAMs) provide a powerful generative framework for embodied control, yet transferring knowledge across heterogeneous WAMs remains challenging due to mismatched latent interfaces, high adaptation cost, and the rigidity of conventional distillation objectives. We propose \textbf{CKT-WAM}, a parameter-efficient \textbf{C}ontext \textbf{K}nowledge \textbf{T}ransfer framework that transfers teacher WAM's knowledge into a student WAM through a compact context in the text embedding space, rather than output imitation or dense hidden-state matching. Specifically, CKT-WAM extracts intermediate teacher hidden states, reduces the number of tokens via compressors' learnable-query cross attention (LQCA), and transforms them through an always-on generalized adapter, a lightweight router, and sparsely activated specialized adapters. The resulting context is then appended to the student's conditioning textual embeddings, thereby injecting the transferred knowledge into the student with minimal architectural modification. Experiments show that CKT-WAM consistently improves zero-shot generalization and achieves the best overall performance on LIBERO-Plus, reaching 86.1\% total success rate with only 1.17\% trainable parameters, while approaching full fine-tuning performance. Beyond simulation, CKT-WAM also demonstrates strong real-world long-horizon manipulation ability, achieving the best average success rate of 83.3\% across four multi-step and long-horizon tasks. Code is available at https://github.com/YuhuaJiang2002/CKT-WAM.
