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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

In-context Learning (ICL) is an emerging few-shot learning paradigm on Language Models (LMs) with inner mechanisms un-explored. There are already existing works describing the inner processing of ICL, while they struggle to capture all the…

Computation and Language · Computer Science 2025-02-21 Hakaze Cho , Mariko Kato , Yoshihiro Sakai , Naoya Inoue

Large language models (LLMs) exhibit an intriguing ability to learn a novel task from in-context examples presented in a demonstration, termed in-context learning (ICL). Understandably, a swath of research has been dedicated to uncovering…

Computation and Language · Computer Science 2024-08-06 Jiaoda Li , Yifan Hou , Mrinmaya Sachan , Ryan Cotterell

The predictions of Large Language Models (LLMs) on downstream tasks often improve significantly when including examples of the input--label relationship in the context. However, there is currently no consensus about how this in-context…

Computation and Language · Computer Science 2024-03-14 Jannik Kossen , Yarin Gal , Tom Rainforth

In-context Learning (ICL) has emerged as a powerful capability alongside the development of scaled-up large language models (LLMs). By instructing LLMs using few-shot demonstrative examples, ICL enables them to perform a wide range of tasks…

Computation and Language · Computer Science 2024-07-24 Quanyu Long , Yin Wu , Wenya Wang , Sinno Jialin Pan

In-context learning (ICL)-the ability of transformer-based models to perform new tasks from examples provided at inference time-has emerged as a hallmark of modern language models. While recent works have investigated the mechanisms…

Machine Learning · Statistics 2025-04-23 Soham Bonnerjee , Zhen Wei , Yeon , Anna Asch , Sagnik Nandy , Promit Ghosal

With the increasing capabilities of large language models (LLMs), in-context learning (ICL) has emerged as a new paradigm for natural language processing (NLP), where LLMs make predictions based on contexts augmented with a few examples. It…

Computation and Language · Computer Science 2024-10-08 Qingxiu Dong , Lei Li , Damai Dai , Ce Zheng , Jingyuan Ma , Rui Li , Heming Xia , Jingjing Xu , Zhiyong Wu , Tianyu Liu , Baobao Chang , Xu Sun , Lei Li , Zhifang Sui

Channel equalization is fundamental for mitigating distortions such as frequency-selective fading and inter-symbol interference. Unlike standard supervised learning approaches that require costly retraining or fine-tuning for each new task,…

Machine Learning · Computer Science 2025-10-13 Jiachen Jiang , Zhen Qin , Zhihui Zhu

Fine-tuning and in-context learning (ICL) are two prevalent methods in imbuing large language models with task-specific knowledge. It is commonly believed that fine-tuning can surpass ICL given sufficient training samples as it allows the…

Machine Learning · Computer Science 2024-10-08 Qingyu Yin , Xuzheng He , Luoao Deng , Chak Tou Leong , Fan Wang , Yanzhao Yan , Xiaoyu Shen , Qiang Zhang

This paper develops a finite-sample statistical theory for in-context learning (ICL), analyzed within a meta-learning framework that accommodates mixtures of diverse task types. We introduce a principled risk decomposition that separates…

Machine Learning · Statistics 2025-12-09 Tomoya Wakayama , Taiji Suzuki

The emergence of in-context learning (ICL) in large language models (LLMs) remains poorly understood despite its consistent effectiveness, enabling models to adapt to new tasks from only a handful of examples. To clarify and improve these…

Machine Learning · Computer Science 2025-10-02 Waïss Azizian , Ali Hasan

Pre-trained large language models (LLMs) based on Transformer have demonstrated striking in-context learning (ICL) abilities. With a few demonstration input-label pairs, they can predict the label for an unseen input without any parameter…

Machine Learning · Computer Science 2024-10-15 Xinhao Yao , Xiaolin Hu , Shenzhi Yang , Yong Liu

Large language models (LLMs) exploit in-context learning (ICL) to solve tasks with only a few demonstrations, but its mechanisms are not yet well-understood. Some works suggest that LLMs only recall already learned concepts from…

Computation and Language · Computer Science 2023-05-18 Jane Pan , Tianyu Gao , Howard Chen , Danqi Chen

In-context learning (ICL) is a powerful ability that emerges in transformer models, enabling them to learn from context without weight updates. Recent work has established emergent ICL as a transient phenomenon that can sometimes disappear…

Machine Learning · Computer Science 2025-03-11 Aaditya K. Singh , Ted Moskovitz , Sara Dragutinovic , Felix Hill , Stephanie C. Y. Chan , Andrew M. Saxe

In-context learning (ICL) derives its power from enabling Large Language Models to adapt to new tasks via prompt-based reasoning alone, entirely bypassing the need for parameter updates. Existing theories primarily study ICL in single-task…

Machine Learning · Computer Science 2026-05-28 Guangyu Li , Meng Ding , Lijie Hu

In-context learning (ICL) is a powerful technique for getting language models to perform complex tasks with no training updates. Prior work has established strong correlations between the number of in-context examples provided and the…

Computation and Language · Computer Science 2025-09-23 Aryaman Arora , Dan Jurafsky , Christopher Potts , Noah D. Goodman

In-context learning (ICL) adapts LLMs by providing demonstrations without fine-tuning the model parameters; however, it does not differentiate between demonstrations and quadratically increases the complexity of Transformer LLMs, exhausting…

Computation and Language · Computer Science 2024-11-06 Giwon Hong , Emile van Krieken , Edoardo Ponti , Nikolay Malkin , Pasquale Minervini

This paper investigates context stickiness in in-context learning (ICL), a phenomenon where earlier examples in a prompt interfere with a transformer's ability to adapt to later tasks. Using synthetic regression tasks over linear and…

Machine Learning · Computer Science 2026-04-28 Hanna Rød , Dagny Streit , Nils Valseth Selte , Justin Li

Large Language Models (LLMs) have showcased their In-Context Learning (ICL) capabilities, enabling few-shot learning without the need for gradient updates. Despite its advantages, the effectiveness of ICL heavily depends on the choice of…

Computation and Language · Computer Science 2024-06-19 Vinay M. S. , Minh-Hao Van , Xintao Wu

Transformers have recently revolutionized many domains in modern machine learning and one salient discovery is their remarkable in-context learning capability, where models can solve an unseen task by utilizing task-specific prompts without…

Machine Learning · Computer Science 2023-10-10 Yu Huang , Yuan Cheng , Yingbin Liang