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Weinan Gan

5 accepted papers

2026

Don’t Start Over: A Cost-Effective Framework for Migrating Personalized Prompts Between LLMs

AAAI 2026technical

Personalization in Large Language Models (LLMs) often relies on user-specific soft prompts. However, these prompts become obsolete when the foundation model is upgraded, necessitating costly, full-scale retraining. To overcome this limitation, we propose the Prompt-level User Migration Adapter (PUMA

Cited by 0SourcePDFScholar
2026

Personalize Before Retrieve: LLM-based Personalized Query Expansion for User-Centric Retrieval

AAAI 2026technical

Retrieval-Augmented Generation (RAG) critically depends on effective query expansion to retrieve relevant information. However, existing expansion methods adopt uniform strategies that overlook user-specific semantics, ignoring individual expression styles, preferences, and historical context. In pr

Cited by 0SourcePDFScholar
2025

Instruction-Tuning Data Synthesis from Scratch via Web Reconstruction

ACL 2025finding

The improvement of LLMs’ instruction-following capabilities depends critically on the availability of high-quality instruction-response pairs. While existing automatic data synthetic methods alleviate the burden of manual curation, they often rely heavily on either the quality of seed data or strong…

2025

RecBase: Generative Foundation Model Pretraining for Zero-Shot Recommendation

EMNLP 2025

Recent advances in LLM-based recommendation have shown promise, yet their cross-domain generalization is hindered by a fundamental mismatch between language-centric pretraining and the recommendation task. Existing methods, relying on language-level knowledge, fail to capture dynamic, item-level use

2025

ToolACE: Winning the Points of LLM Function Calling

ICLR 2025poster

Function calling significantly extends the application boundary of large language models (LLMs), where high-quality and diverse training data is critical for unlocking this capability. However, collecting and annotating real function-calling data is challenging, while synthetic data from existing pi…

Cited by 23SourcePDFScholar