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In-context learning (ICL) suffers from oversensitivity to the prompt, making it unreliable in real-world scenarios. We study the sensitivity of ICL with respect to multiple perturbation types. First, we find that label bias obscures the…

Computation and Language · Computer Science 2024-01-30 Yanda Chen , Chen Zhao , Zhou Yu , Kathleen McKeown , He He

Large language models (LLMs) can perform a new task by merely conditioning on task instructions and a few input-output examples, without optimizing any parameters. This is called In-Context Learning (ICL). In-context Information Extraction…

Computation and Language · Computer Science 2025-07-14 Chaoxu Pang , Yixuan Cao , Qiang Ding , Ping Luo

In-context learning (ICL) is one of the most powerful and most unexpected capabilities to emerge in recent transformer-based large language models (LLMs). Yet the mechanisms that underlie it are poorly understood. In this paper, we…

We study the in-context learning (ICL) capabilities of pretrained Transformers in the setting of nonlinear regression. Specifically, we focus on a random Transformer with a nonlinear MLP head where the first layer is randomly initialized…

Machine Learning · Statistics 2025-09-19 Samet Demir , Zafer Dogan

In-context learning (ICL) has revolutionized the capabilities of transformer models in NLP. In our project, we extend the understanding of the mechanisms underpinning ICL by exploring whether transformers can learn from sequential,…

Machine Learning · Computer Science 2023-12-22 Ryan Campbell , Emma Guo , Evan Hu , Reya Vir , Ethan Hsiao

Pretrained transformers exhibit the remarkable ability of in-context learning (ICL): they can learn tasks from just a few examples provided in the prompt without updating any weights. This raises a foundational question: can ICL solve…

Machine Learning · Computer Science 2023-11-09 Allan Raventós , Mansheej Paul , Feng Chen , Surya Ganguli

Despite the remarkable success of transformer-based models in various real-world tasks, their underlying mechanisms remain poorly understood. Recent studies have suggested that transformers can implement gradient descent as an in-context…

Machine Learning · Computer Science 2024-08-09 Xingwu Chen , Lei Zhao , Difan Zou

In-context learning (ICL) improves language models' performance on a variety of NLP tasks by simply demonstrating a handful of examples at inference time. It is not well understood why ICL ability emerges, as the model has never been…

Computation and Language · Computer Science 2023-06-28 Xiaochuang Han , Daniel Simig , Todor Mihaylov , Yulia Tsvetkov , Asli Celikyilmaz , Tianlu Wang

Despite the surprising few-shot performance of in-context learning (ICL), it is still a common practice to randomly sample examples to serve as context. This paper advocates a new principle for ICL: self-adaptive in-context learning. The…

Computation and Language · Computer Science 2023-05-04 Zhiyong Wu , Yaoxiang Wang , Jiacheng Ye , Lingpeng Kong

Understanding in-context learning (ICL) capability that enables large language models (LLMs) to excel in proficiency through demonstration examples is of utmost importance. This importance stems not only from the better utilization of this…

Computation and Language · Computer Science 2024-10-04 Yuxiang Zhou , Jiazheng Li , Yanzheng Xiang , Hanqi Yan , Lin Gui , Yulan He

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…

Computation and Language · Computer Science 2025-05-09 Lizhe Fang , Yifei Wang , Khashayar Gatmiry , Lei Fang , Yisen Wang

Large language models (LLMs) like transformers demonstrate impressive in-context learning (ICL) capabilities, allowing them to make predictions for new tasks based on prompt exemplars without parameter updates. While existing ICL theories…

Machine Learning · Computer Science 2024-11-12 Kevin Christian Wibisono , Yixin Wang

The emergent ability of Large Language Models to use a small number of examples to learn to perform in novel domains and tasks, also called in-context learning (ICL). In this work, we show that a much smaller model can be trained to perform…

Computation and Language · Computer Science 2023-09-18 Raphael Reinauer , Patrick Simianer , Kaden Uhlig , Johannes E. M. Mosig , Joern Wuebker

Vision-Language Models (VLMs) have shown remarkable capabilities in a large number of downstream tasks. Nonetheless, compositional image understanding remains a rather difficult task due to the object bias present in training data. In this…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Matteo Nulli , Anesa Ibrahimi , Avik Pal , Hoshe Lee , Ivona Najdenkoska

Recent research has investigated the underlying mechanisms of in-context learning (ICL) both theoretically and empirically, often using data generated from simple function classes. However, the existing work often focuses on the sequence…

Machine Learning · Computer Science 2025-03-03 Ziqian Lin , Shubham Kumar Bharti , Kangwook Lee

In-context learning (ICL) is a central capability of Transformer models, but the structures in data that enable its emergence and govern its robustness remain poorly understood. In this work, we study how the structure of pretraining tasks…

Machine Learning · Statistics 2025-10-01 Mary I. Letey , Jacob A. Zavatone-Veth , Yue M. Lu , Cengiz Pehlevan

In-context learning (ICL) has emerged as a powerful paradigm for task adaptation in large language models (LLMs), where models infer underlying task structures from a few demonstrations. However, ICL remains susceptible to biases that arise…

Computation and Language · Computer Science 2025-06-18 Zhihang Tan , Jingrui Hou , Ping Wang , Qibiao Hu , Peng Zhu

In-Context Learning (ICL) enables transformer-based language models to adapt to new tasks by conditioning on demonstration examples. However, traditional example-driven in-context learning lacks explicit modules for knowledge retrieval and…

Computation and Language · Computer Science 2026-03-31 Pan Chen , Shaohong Chen , Mark Wang , Shi Xuan Leong , Priscilla Fung , Varinia Bernales , Alan Aspuru-Guzik

Many-shot in-context learning (ICL) has emerged as a unique setup to both utilize and test the ability of large language models to handle long context. This paper delves into long-context language model (LCLM) evaluation through many-shot…

Computation and Language · Computer Science 2025-06-13 Kaijian Zou , Muhammad Khalifa , Lu Wang

In-context learning (ICL) in large language models (LLMs) is a striking phenomenon, yet its underlying mechanisms remain only partially understood. Previous work connects linear self-attention (LSA) to gradient descent (GD), this connection…

Machine Learning · Computer Science 2025-12-05 Shifeng Xie , Rui Yuan , Simone Rossi , Thomas Hannagan