On-policy reinforcement learning has become a central paradigm for improving the reasoning abilities of large language models. However, its effectiveness is often limited by reward sparsity: when a model fails to discover correct trajectories for difficult problems, the optimization process receives little useful signa...
Hoang Phan, M. Pham, Chau Pham et al.· 0 citations
A matrix-valued optimizer that preserves the singular subspaces of the gradient while applying a bounded, monotone sigmoid transformation to its singular values is introduced, and the effectiveness and robustness of Soren against established optimizers are demonstrated.
Dat Phi Van, Minh Vu Ngo, Tuc Nguyen et al.· 0 citations
SORT adds a repair update for all-wrong prompts without changing rollout generation: it derives a plan from the reference solution, compares token probabilities with and without that plan, and gives higher weight to tokens that become more predictable under plan conditioning.
A. Duc, Tien-Phat Nguyen, T. Nguyen et al.· arXiv.org· 1 citation
HyperProve is proposed, a retrieval-augmented QA framework that addresses the challenge of multi-hop question answering by coupling question decomposition with answer-conditioned expansion over a hypergraph of atomic facts.
An Nguyen Phu, Dung Nguyen Quang, An Hieu Luu et al.· 0 citations
LLM-Detector is proposed, a framework that utilizes the in-context learning capacity of LLMs for structured, prompt-conditioned scoring synthesis, enabling LLMs to derive anomaly detection logic from structured normal-state knowledge.
Tu Nguyen, Dang Nguyen, T. D. Le et al.· 0 citations
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