Ax K. J. Kevin Feng (Jim), Tzu-Sheng Kuo (Jim), Quan Ze (Jim), Chen, Inyoung Cheong, Kenneth Holstein, Amy X. Zhang 2/19/2026

PolicyPad: Collaborative Prototyping of LLM Policies

PolicyPad system supporting collaborative policy design for LLMs in high-stakes domains via rapid prototyping and iteration.

Ax Lucas Bandarkar, Chenyuan Yang, Mohsen Fayyaz, Junlin Hu, Nanyun Peng 2/19/2026

Multilingual Routing in Mixture-of-Experts

Analysis of expert routing patterns in multilingual Mixture-of-Experts LLMs revealing language-specific dynamics across layers.

Ax Zhaoyi Joey Hou, Bowei Alvin Zhang, Yining Lu, Bhiman Kumar Baghel, Anneliese Brei, Ximing Lu, Meng Jiang, Faeze Brahman, Snigdha Chaturvedi, Haw-Shiuan Chang, Daniel Khashabi, Xiang Lorraine Li 2/19/2026

CreativityPrism: A Holistic Evaluation Framework for Large Language Model Creativity

CreativityPrism framework for holistic, scalable evaluation of LLM creativity across diverse scenarios without heavy human involvement.

Ax Prajit Bhaskaran, Tom Viering 2/19/2026

Transformers can do Bayesian Clustering

Cluster-PFN uses Transformers for unsupervised Bayesian clustering with uncertainty quantification, handling missing values.

Ax Dong-Shan Jian, Xiang Li, Chen-Xu Yan, Hui-Wen Zheng, Zhi-Zhang Bian, You-Le Fang, Ren-Xi He, Jing-Tian Zhang, Ce Meng, Ling-Shi Meng, Bing-Rui Gong, Sheng-Qi Zhang, Yan-Qing Ma 2/19/2026

Mastering Olympiad-Level Physics with Artificial Intelligence

LOCA framework enabling AI agents to solve Olympiad-level physics problems via logical chain decomposition and verification.

Ax Shubham Agarwal, Asim Biswal, Sepanta Zeighami, Alvin Cheung, Joseph Gonzalez, Aditya G. Parameswaran 2/19/2026

Arming Data Agents with Tribal Knowledge

Framework arming NL2SQL agents with database-specific tribal knowledge to improve translation accuracy on real-world databases.

Ax David Puertolas Merenciano, Ekaterina Vasyagina, Raghav Dixit, Kevin Zhu, Ruizhe Li, Javier Ferrando, Maheep Chaudhary 2/19/2026

Weight space Detection of Backdoors in LoRA Adapters

Weight-space detection method for backdoor attacks in LoRA adapters without requiring execution or knowing trigger patterns.

Ax Longfei Chen, Ji Zhao, Lanxiao Cui, Tong Su, Xingbo Pan, Ziyang Li, Yongxing Wu, Qijiang Cao, Qiyao Cai, Jing Zhang, Yuandong Ni, Junyao He, Zeyu Zhang, Chao Ge, Xuhuai Lu, Zeyu Gao, Yuxin Cui, Weisen Chen, Yuxuan Peng, Shengping Wang, Qi Li, Yukai Huang, Yukun Liu, Tuo Zhou, Terry Yue Zhuo, Junyang Lin, Chao Zhang 2/19/2026

SecCodeBench-V2 Technical Report

SecCodeBench-V2: benchmark of 98 scenarios evaluating LLM code generation security across 5 languages and 22 CWE categories.

Ax Cherish Puniani, Tushar Kumar, Arnav Bendre, Gaurav Kumar, Shree Singhi 2/19/2026

B-DENSE: Branching For Dense Ensemble Network Learning

B-DENSE proposes branching approach to improve diffusion model inference speed while preserving structural information from intermediate trajectory steps.

Ax Mehrab Beikzadeh, Yasaman Asadollah Salmanpour, Ashima Suvarna, Sriram Sankararaman, Matteo Malgaroli, Majid Sarrafzadeh, Saadia Gabriel 2/19/2026

Multi-Objective Alignment of Language Models for Personalized Psychotherapy

Multi-objective alignment method for LLMs in psychotherapy applications balancing patient preferences with clinical safety using preference rankings.

Ax Yunshu Wu, Jiayi Cheng, Partha Thakuria, Rob Brekelmans, Evangelos E. Papalexakis, Greg Ver Steeg 2/19/2026

Discrete Stochastic Localization for Non-autoregressive Generation

Non-autoregressive generation using masked diffusion language models with remasking samplers to reduce decoding latency while addressing error accumulation in iterative refinement.

Ax Pooja Honna, Ayush Patravali, Nithin Nagaraj, Nanjangud C. Narendra 2/19/2026

Linked Data Classification using Neurochaos Learning

Neurochaos Learning applied to linked data classification, demonstrating small-sample learning and low compute requirements on graph-structured data.