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Agent-Based Models (ABMs) are gaining great popularity in economics and social science because of their strong flexibility to describe the realistic and heterogeneous decisions and interaction rules between individual agents. In this work,…

Machine Learning · Computer Science 2026-01-13 Junyao Zhang , Jinglai Li , Junqi Tang

At present, the mechanisms of in-context learning in Transformers are not well understood and remain mostly an intuition. In this paper, we suggest that training Transformers on auto-regressive objectives is closely related to…

In-context learning enables transformer models to generalize to new tasks based solely on input prompts, without any need for weight updates. However, existing training paradigms typically rely on large, unstructured datasets that are…

A conformal classifier produces a set of predicted classes and provides a probabilistic guarantee that the set includes the true class. Unfortunately, it is often the case that conformal classifiers produce uninformatively large sets. In…

Machine Learning · Computer Science 2025-05-30 Divya Shanmugam , Helen Lu , Swami Sankaranarayanan , John Guttag

In order to understand the in-context learning phenomenon, recent works have adopted a stylized experimental framework and demonstrated that Transformers can learn gradient-based learning algorithms for various classes of real-valued…

Machine Learning · Computer Science 2023-10-05 Satwik Bhattamishra , Arkil Patel , Phil Blunsom , Varun Kanade

Prior work has established Test-Time Training (TTT) as a general framework to further improve a trained model at test time. Before making a prediction on each test instance, the model is first trained on the same instance using a…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Renhao Wang , Yu Sun , Arnuv Tandon , Yossi Gandelsman , Xinlei Chen , Alexei A. Efros , Xiaolong Wang

Scaling model parameters has become the de facto strategy for improving NLP systems, but it comes with substantial computational costs. Test-Time Scaling (TTS) offers an alternative by allocating more computation at inference: generating…

Computation and Language · Computer Science 2025-09-24 Shaomu Tan , Ryosuke Mitani , Ritvik Choudhary , Toshiyuki Sekiya

Predicting simple function classes has been widely used as a testbed for developing theory and understanding of the trained Transformer's in-context learning (ICL) ability. In this paper, we revisit the training of Transformers on linear…

Machine Learning · Computer Science 2024-05-27 Shang Liu , Zhongze Cai , Guanting Chen , Xiaocheng Li

Large Language Models (LLMs) are pretrained on massive datasets and later instruction-tuned via supervised fine-tuning (SFT) or reinforcement learning (RL). Best practices emphasize large, diverse pretraining data, whereas post-training…

Machine Learning · Computer Science 2026-03-03 Adel Javanmard , Baharan Mirzasoleiman , Vahab Mirrokni

In-context learning is a promising approach for offline reinforcement learning (RL) to handle online tasks, which can be achieved by providing task prompts. Recent works demonstrated that in-context RL could emerge with self-improvement in…

Machine Learning · Computer Science 2024-06-03 Sili Huang , Jifeng Hu , Hechang Chen , Lichao Sun , Bo Yang

We propose tttLRM, a novel large 3D reconstruction model that leverages a Test-Time Training (TTT) layer to enable long-context, autoregressive 3D reconstruction with linear computational complexity, further scaling the model's capability.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Chen Wang , Hao Tan , Wang Yifan , Zhiqin Chen , Yuheng Liu , Kalyan Sunkavalli , Sai Bi , Lingjie Liu , Yiwei Hu

In this paper, we evaluate the capability of transformer-based language models in making inferences over uncertain text that includes uncertain rules of reasoning. We cover both Pre-trained Language Models (PLMs) and generative Large…

Computation and Language · Computer Science 2024-02-12 Aliakbar Nafar , Kristen Brent Venable , Parisa Kordjamshidi

This paper introduces an algorithm to select demonstration examples for in-context learning of a query set. Given a set of $n$ examples, how can we quickly select $k$ out of $n$ to best serve as the conditioning for downstream inference?…

Machine Learning · Computer Science 2025-11-05 Ziniu Zhang , Zhenshuo Zhang , Dongyue Li , Lu Wang , Jennifer Dy , Hongyang R. Zhang

Deploying models on target domain data subject to distribution shift requires adaptation. Test-time training (TTT) emerges as a solution to this adaptation under a realistic scenario where access to full source domain data is not available…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Yongyi Su , Xun Xu , Kui Jia

Recent works attribute the capability of in-context learning (ICL) in large pre-trained language models to implicitly simulating and fine-tuning an internal model (e.g., linear or 2-layer MLP) during inference. However, such constructions…

Computation and Language · Computer Science 2024-02-09 Abhishek Panigrahi , Sadhika Malladi , Mengzhou Xia , Sanjeev Arora

Fine-tuning a pretrained transformer for a downstream task has become a standard method in NLP in the last few years. While the results from these models are impressive, applying them can be extremely computationally expensive, as is…

Computation and Language · Computer Science 2020-08-18 Davis Yoshida , Allyson Ettinger , Kevin Gimpel

Test-time training (TTT) adapts model parameters on unlabeled test instances during inference time, which continuously extends capabilities beyond the reach of offline training. Despite initial gains, existing TTT methods for LRMs plateau…

Machine Learning · Computer Science 2026-04-22 Qingyang Zhang , Xinke Kong , Haitao Wu , Qinghua Hu , Minghao Wu , Baosong Yang , Yu Cheng , Yun Luo , Ganqu Cui , Changqing Zhang

Despite their exceptional performance in vision tasks, deep learning models often struggle when faced with domain shifts during testing. Test-Time Training (TTT) methods have recently gained popularity by their ability to enhance the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-15 David Osowiechi , Gustavo A. Vargas Hakim , Mehrdad Noori , Milad Cheraghalikhani , Ali Bahri , Moslem Yazdanpanah , Ismail Ben Ayed , Christian Desrosiers

Graph Neural Networks have demonstrated great success in various fields of multimedia. However, the distribution shift between the training and test data challenges the effectiveness of GNNs. To mitigate this challenge, Test-Time Training…

Machine Learning · Computer Science 2024-04-23 Jiaxin Zhang , Yiqi Wang , Xihong Yang , Siwei Wang , Yu Feng , Yu Shi , Ruicaho Ren , En Zhu , Xinwang Liu

Test-Time Scaling (TTS) is a promising approach to progressively elicit the model's intelligence during inference. Recently, training-based TTS methods, such as continued reinforcement learning (RL), have further surged in popularity, while…

Computation and Language · Computer Science 2025-09-10 Kaiyan Chang , Yonghao Shi , Chenglong Wang , Hang Zhou , Chi Hu , Xiaoqian Liu , Yingfeng Luo , Yuan Ge , Tong Xiao , Jingbo Zhu