arXiv Machine Learning

On the Identifiability of Masked Prediction: Mode Blindness and Mask Schedules

arXiv:2608. 01383v1 Announce Type: new Abstract: Masked prediction learns representations by fitting a schedule-weighted family of conditional laws, but it remains unclear when near-optimal conditional prediction pins down the underlying joint law.

arXiv AI
Aug 10

Dueling World Models: Advantage-Style Action Channels for Common-Mode Distractor Rejection

arXiv:2608. 06706v1 Announce Type: cross Abstract: Latent world models plan by predicting future states from an action, but when a scene contains motion the agent does not control, they quietly go action-blind: predictions for different actions become indistinguishable even as the training loss keeps improving.

By Jiazhuo Li, Yiming Fei, Zhiruo Zhou, Heikichi Hayashi
arXiv Machine Learning
Jul 7

A Unified Framework for In-Context Learning with Causal and Masked Language Models

arXiv:2607. 04081v1 Announce Type: new Abstract: In-context learning (ICL) has emerged as a central capability of pretrained language models, yet its theoretical analysis has focused primarily on causal language models trained by left-to-right autoregressive prediction, such as GPT-style models.

By Chenrui Liu, Chuanlong Xie, Falong Tan, Yicheng Zeng, Lixing Zhu