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Z. Liu

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#artificial intelligence Preprint Sep 2026

Understanding the Synergy between SFT, RLVR, and OPD in LLM Post-Training

This work characterize OPD across nine student-teacher pairs spanning 2x to 53x parameter ratios and shows that OPD effectiveness depends on student-teacher compatibility rather than teacher scale alone, and suggests that each post-training stage should be chosen not only for the capability it adds, but for the learnin...

Emre Can Acikgoz, Yang Li, Z. Liu et al. · 0 citations

Learning Composable Chains-of-Thought

It is found that simply training models on CoT data of atomic tasks leads to limited generalization, but minimally modifying CoT formats of constituent atomic tasks to be composable can lead to improvements.

Fangcong Yin, Zeyu Liu, Liu Leqi et al. · 1 citation
Open access Jul 2026

TaxEL: Taxonomy-Enhanced Entity Representation Learning for Biomedical Entity Linking.

TaxEL introduces Taxonomy-Guided Contrastive Sampling (TGCS), which systematically integrates both local ontology structure and global semantic similarity to generate informative positive and hard negative samples for each mention; and Structured Semantic Alignment Loss (SSAL), which enforces alignment between model pr...

Rui Hua, Zeyu Liu, Zixin Shu et al. · 0 citations
Preprint Jul 2026

Procedural Memory Distillation: Online Reflection for Self-Improving Language Models

Procedural Memory Distillation is proposed, which converts crossepisode signals into reusable procedural memory and distills it into the policy's weights during training, yielding a memory-free model at inference.

Ye Liu, Srijan Bansal, Bo Pang et al. · 2 citations

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