Ax Xuanfei Ren, Allen Nie, Tengyang Xie, Ching-An Cheng 3/17/2026

POLCA: Stochastic Generative Optimization with LLM

POLCA framework uses LLMs as optimizers guided by rewards and feedback to automate optimization of prompts and multi-turn agent systems, formalizing it as stochastic generative optimization.

Ax Kevin Taylor 3/17/2026

Directional Routing in Transformers

Lightweight routing mechanism for transformer attention heads with mechanistic interpretability analysis of computational pathways.

Ax Fernando Ropero, Erkin Turkoz, Daniel Matos, Junqing Du, Antonio Ruiz, Yanfeng Zhang, Lu Liu, Mingwei Sun, Yongliang Wang 3/17/2026

RieMind: Geometry-Grounded Spatial Agent for Scene Understanding

Spatial reasoning agent decoupling perception from reasoning in visual language models for improved metric and geometric scene understanding.

Ax Jia Wang, Chuanyu Qin, Mingyu Zheng, Qingyi Si, Peize Li, Zheng Lin 3/17/2026

A Closer Look into LLMs for Table Understanding

Empirical study of 16 LLMs examining internal mechanisms for table understanding across attention dynamics, layer depth, and expert activation.