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Lizhe Fang

4 accepted papers

2026

Any-Order Any-Subset AutoRegressive Model

ICLR 2026poster

We propose Any-order Any-subset Autoregressive modeling (A3), a novel sequence generation framework that generalizes standard autoregressive (AR) factorization to support the prediction of arbitrary token groups in any order. A3 overcomes the limitations of conventional left-to-right decoding by ena…

Cited by 0SourcecodeScholar
2026

Rethinking Personalization in Large Language Models at the Token Level

ICML 2026poster

With large language models (LLMs) now performing strongly across diverse tasks, there is growing demand for them to personalize outputs for individual users. Personalization is typically framed as an additional layer on top of a base NLP task, requiring model responses to meet user-specific needs wh…

Cited by 0SourceScholar
2025

Rethinking Invariance in In-context Learning

ICLR 2025poster

In-Context Learning (ICL) has emerged as a pivotal capability of auto-regressive large language models, yet it is hindered by a notable sensitivity to the ordering of context examples regardless of their mutual independence. To address this issue, recent studies have introduced several variant algor…

2025

What is Wrong with Perplexity for Long-context Language Modeling?

ICLR 2025poster

Handling long-context inputs is crucial for large language models (LLMs) in tasks such as extended conversations, document summarization, and many-shot in-context learning. While recent approaches have extended the context windows of LLMs and employed perplexity (PPL) as a standard evaluation metric…