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cs.CL2026
TARPO: Token-Wise Latent-Explicit Reasoning via Action-Routing Policy Optimization
Liting Zhang, Shiwan Zhao, Xuyang Zhao +3
Latent reasoning has emerged as a promising alternative to discrete Chain-of-Thought (CoT) in large language models (LLMs), enabling more expressive reasoning by operating over con…
cs.CL2026
Large Language Model Post-Training: A Unified View of Off-Policy and On-Policy Learning
Shiwan Zhao, Zhihu Wang, Xuyang Zhao +10
Post-training has become central to turning pretrained large language models (LLMs) into aligned, capable, and deployable systems. Recent progress spans supervised fine-tuning (SFT…
cs.CL2025
MAPEX: A Multi-Agent Pipeline for Keyphrase Extraction
Liting Zhang, Shiwan Zhao, Aobo Kong +1
Keyphrase extraction is a fundamental task in natural language processing. However, existing unsupervised prompt-based methods for Large Language Models (LLMs) often rely on single…