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Model learning from class imbalanced training data is a long-standing and significant challenge for machine learning. In particular, existing deep learning methods consider mostly either class balanced data or moderately imbalanced data in…

计算机视觉与模式识别 · 计算机科学 2018-05-01 Qi Dong , Shaogang Gong , Xiatian Zhu

In-context learning (ICL) enables large language models (LLMs) to adapt to new tasks without weight updates by learning from demonstration sequences. While ICL shows strong empirical performance, its internal representational mechanisms are…

计算与语言 · 计算机科学 2025-10-07 Jiachen Jiang , Yuxin Dong , Jinxin Zhou , Zhihui Zhu

In-context learning (ICL), teaching a large language model (LLM) to perform a task with few-shot demonstrations rather than adjusting the model parameters, has emerged as a strong paradigm for using LLMs. While early studies primarily used…

计算与语言 · 计算机科学 2023-05-24 Man Luo , Xin Xu , Zhuyun Dai , Panupong Pasupat , Mehran Kazemi , Chitta Baral , Vaiva Imbrasaite , Vincent Y Zhao

In the In-Context Learning (ICL) setup, various forms of label biases can manifest. One such manifestation is majority label bias, which arises when the distribution of labeled examples in the in-context samples is skewed towards one or…

Generative Large Language Models (LLMs) are capable of being in-context learners. However, the underlying mechanism of in-context learning (ICL) is still a major research question, and experimental research results about how models exploit…

计算与语言 · 计算机科学 2025-02-11 Aliakbar Nafar , Kristen Brent Venable , Parisa Kordjamshidi

In-context learning (ICL) allows LLMs to learn from examples without changing their weights: this is a particularly promising capability for long-context LLMs that can potentially learn from many examples. Recently, Lin et al. (2024)…

计算与语言 · 计算机科学 2025-04-21 Hao Zhao , Maksym Andriushchenko , Francesco Croce , Nicolas Flammarion

Class-level evaluation can conceal substantial performance disparities across subconcepts within the same class, causing models that perform well on average to fail on specific subpopulations. Prior work has shown that common evaluation…

机器学习 · 计算机科学 2026-04-30 Taylor Maxson , Roberto Corizzo , Yaning Wu , Nathalie Japkowicz , Colin Bellinger

In-context learning (ICL) is the ability of a large language model (LLM) to learn a new task from a few demonstrations presented as part of the context. Past studies have attributed a large portion of the success of ICL to the way these…

计算与语言 · 计算机科学 2025-10-10 Ioana Marinescu , Kyunghyun Cho , Eric Karl Oermann

Recent interest has surged in employing Large Language Models (LLMs) for machine translation (MT) via in-context learning (ICL) (Vilar et al., 2023). Most prior studies primarily focus on optimizing translation quality, with limited…

计算与语言 · 计算机科学 2024-06-06 Pranjal A. Chitale , Jay Gala , Raj Dabre

Large language models (LLMs) exhibit remarkable performance improvement through in-context learning (ICL) by leveraging task-specific examples in the input. However, the mechanisms behind this improvement remain elusive. In this work, we…

计算与语言 · 计算机科学 2024-02-23 Safoora Yousefi , Leo Betthauser , Hosein Hasanbeig , Raphaël Millière , Ida Momennejad

Large Language Models (LLMs) have proven effective at In-Context Learning (ICL), an ability that allows them to create predictors from labeled examples. Few studies have explored the interplay between ICL and specific properties of…

机器学习 · 计算机科学 2023-11-23 David Oniani , Yanshan Wang

Large language models (LLMs) have shown an impressive ability to perform a wide range of tasks using in-context learning (ICL), where a few examples are used to describe a task to the model. However, the performance of ICL varies…

计算与语言 · 计算机科学 2024-06-25 Keqin Peng , Liang Ding , Yancheng Yuan , Xuebo Liu , Min Zhang , Yuanxin Ouyang , Dacheng Tao

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…

机器学习 · 计算机科学 2024-05-31 Zhenmei Shi , Junyi Wei , Zhuoyan Xu , Yingyu Liang

By allowing models to predict without task-specific training, in-context learning (ICL) with pretrained LLMs has enormous potential in NLP. However, a number of problems persist in ICL. In particular, its performance is sensitive to the…

计算与语言 · 计算机科学 2024-02-20 Zhichao Xu , Daniel Cohen , Bei Wang , Vivek Srikumar

Class imbalance and label noise are pervasive in large-scale datasets, yet much of machine learning research assumes well-labeled, balanced data, which rarely reflects real world conditions. Existing approaches typically address either…

Large Language Models (LLMs) have the impressive ability to perform in-context learning (ICL) from only a few examples, but the success of ICL varies widely from task to task. Thus, it is important to quickly determine whether ICL is…

计算与语言 · 计算机科学 2023-10-27 Harvey Yiyun Fu , Qinyuan Ye , Albert Xu , Xiang Ren , Robin Jia

Class-imbalance is a common problem in machine learning practice. Typical Imbalanced Learning (IL) methods balance the data via intuitive class-wise resampling or reweighting. However, previous studies suggest that beyond class-imbalance,…

机器学习 · 计算机科学 2022-11-24 Zhining Liu , Pengfei Wei , Zhepei Wei , Boyang Yu , Jing Jiang , Wei Cao , Jiang Bian , Yi Chang

A number of classification problems need to deal with data imbalance between classes. Often it is desired to have a high recall on the minority class while maintaining a high precision on the majority class. In this paper, we review a…

应用统计 · 统计学 2016-08-23 Ajinkya More

Integrating supervised contrastive loss to cross entropy-based communication has recently been proposed as a solution to address the long-tail learning problem. However, when the class imbalance ratio is high, it requires adjusting the…

机器学习 · 计算机科学 2024-07-10 Charika De Alvis , Dishanika Denipitiyage , Suranga Seneviratne

In-context learning (ICL) using large language models for tasks with many labels is challenging due to the limited context window, which makes it difficult to fit a sufficient number of examples in the prompt. In this paper, we use a…

计算与语言 · 计算机科学 2023-12-07 Aristides Milios , Siva Reddy , Dzmitry Bahdanau