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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

With the increasing ability of large language models (LLMs), in-context learning (ICL) has evolved as a new paradigm for natural language processing (NLP), where instead of fine-tuning the parameters of an LLM specific to a downstream task…

Information Retrieval · Computer Science 2024-05-03 Andrew Parry , Debasis Ganguly , Manish Chandra

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

We investigate whether chemical processes can perform in-context learning (ICL), a mode of computation typically associated with transformer architectures. ICL allows a system to infer task-specific rules from a sequence of examples without…

Disordered Systems and Neural Networks · Physics 2026-01-13 Carlos Floyd , Hector Manuel Lopez Rios , Aaron R. Dinner , Suriyanarayanan Vaikuntanathan

Large language models (LLMs) are powerful models that can learn concepts at the inference stage via in-context learning (ICL). While theoretical studies, e.g., \cite{zhang2023trained}, attempt to explain the mechanism of ICL, they assume…

Machine Learning · Computer Science 2024-06-19 Yue Xing , Xiaofeng Lin , Chenheng Xu , Namjoon Suh , Qifan Song , Guang Cheng

Large language models (LLM) have emerged as a powerful tool for AI, with the key ability of in-context learning (ICL), where they can perform well on unseen tasks based on a brief series of task examples without necessitating any…

Machine Learning · Computer Science 2024-05-31 Zhenmei Shi , Junyi Wei , Zhuoyan Xu , Yingyu Liang

Transformers pretrained on diverse tasks exhibit remarkable in-context learning (ICL) capabilities, enabling them to solve unseen tasks solely based on input contexts without adjusting model parameters. In this paper, we study ICL in one of…

Machine Learning · Statistics 2024-03-18 Jingfeng Wu , Difan Zou , Zixiang Chen , Vladimir Braverman , Quanquan Gu , Peter L. Bartlett

Large pre-trained sequence models, such as transformer-based architectures, have been recently shown to have the capacity to carry out in-context learning (ICL). In ICL, a decision on a new input is made via a direct mapping of the input…

Information Theory · Computer Science 2024-01-23 Matteo Zecchin , Kai Yu , Osvaldo Simeone

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

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

Large Language Models (LLMs) exhibit In-Context Learning (ICL), which enables the model to perform new tasks conditioning only on the examples provided in the context without updating the model's weights. While ICL offers fast adaptation…

In-context learning (ICL), the remarkable ability to solve a task from only input exemplars, is often assumed to be a unique hallmark of Transformer models. By examining commonly employed synthetic ICL tasks, we demonstrate that multi-layer…

Machine Learning · Computer Science 2025-02-26 William L. Tong , Cengiz Pehlevan

In-Context Learning (ICL) has significantly expanded the general-purpose nature of large language models, allowing them to adapt to novel tasks using merely the inputted context. This has motivated a series of papers that analyze tractable…

Machine Learning · Computer Science 2025-05-05 Core Francisco Park , Ekdeep Singh Lubana , Itamar Pres , Hidenori Tanaka

In-context learning refers to the ability of a model to condition on a prompt sequence consisting of in-context examples (input-output pairs corresponding to some task) along with a new query input, and generate the corresponding output.…

Computation and Language · Computer Science 2023-08-15 Shivam Garg , Dimitris Tsipras , Percy Liang , Gregory Valiant

Transformer-based models have demonstrated remarkable reasoning abilities, but the mechanisms underlying relational reasoning remain poorly understood. We investigate how transformers perform \textit{transitive inference}, a classic…

Machine Learning · Computer Science 2026-05-12 Jesse Geerts , Andrew Liu , Stephanie Chan , Claudia Clopath , Kimberly Stachenfeld

In-context learning (ICL) is now a common method for teaching large language models (LLMs) new tasks: given labeled examples in the input context, the LLM learns to perform the task without weight updates. Do models guided via ICL infer the…

Computation and Language · Computer Science 2024-04-11 Aaron Mueller , Albert Webson , Jackson Petty , Tal Linzen

In-context learning (ICL) is a cornerstone of large language model (LLM) functionality, yet its theoretical foundations remain elusive due to the complexity of transformer architectures. In particular, most existing work only theoretically…

Machine Learning · Computer Science 2024-09-18 Siyu Chen , Heejune Sheen , Tianhao Wang , Zhuoran Yang

In-context learning (ICL) enables large language models to adapt to new tasks from demonstrations without parameter updates. Despite extensive empirical studies, a principled understanding of ICL emergence at scale remains more elusive. We…

Machine Learning · Computer Science 2025-11-11 Sushant Mehta , Ishan Gupta

Transformer architectures can solve unseen tasks based on input-output pairs in a given prompt due to in-context learning (ICL). Existing theoretical studies on ICL have mainly focused on linear regression tasks, often with i.i.d. inputs.…

Machine Learning · Computer Science 2025-11-19 Yanna Ding , Songtao Lu , Yingdong Lu , Tomasz Nowicki , Jianxi Gao

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