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Jian Chen

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#artificial intelligence Preprint Oct 2026

Beyond Successor Accuracy: State Retention for Recursive Self-Improvement in Recommendation

Recommendation recursive self-improvement (Rec-RSI) feeds recommender outputs into subsequent training. Evaluating each round solely through its latest model assumes that the successor consolidates the update, although pre- and post-update models may retain complementary ranking decisions. We term this \emph{distribute...

Jin-Feng Xu, Zhe-Yu Chen, Zi-Yue Peng et al. · 0 citations
#artificial intelligence Preprint Aug 2026

Learning What to Activate: Combinatorial Capability Allocation for Long-Horizon Multimodal Agents

This paper introduces CoCA, an on-policy learning framework that recovers a deployable capability-subset policy from sparse conditional comparisons, and introduces dual-level on-policy distillation to address distribution mismatch both across environment states and within the partial subsets encountered during set cons...

Wen-Hao Yuan, Chen-Chen Lin, Jian Chen et al. · 0 citations
Preprint Aug 2026

Neural Tree Collaborative Filtering: Rethinking Graph Collaborative Filtering as Tree Collaborative Filtering with Curvature-Aware Propagation Depth

This paper proposes Neural Tree Collaborative Filtering (NTCF), a framework that re-interprets each node's local neighborhood as a rooted tree and assigns a node-specific propagation depth based on a closed-form local-degree-imbalance score that serves as a discrete Ricci-curvature proxy.

Jin-Feng Xu, Zhe-Yu Chen, Zi-Yue Peng et al. · 0 citations
Preprint Aug 2026

When Is Shallow Enough? Adaptive Split Federated Learning with Client-Specific Sufficiency Estimation

A client-specific adaptation channel based on private prompt tokens, which tracks local adaptation dynamics separately from the shared backbone and provides a lightweight signal for detecting whether client adaptation remains active, and a shallow sufficiency estimator that combines cross-client semantic alignment, tem...

Wen-Hao Yuan, Chen-Chen Lin, Wentao Hu et al. · 0 citations

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