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It is a well-known challenge to learn an unbiased ranker with biased feedback. Unbiased learning-to-rank(LTR) algorithms, which are verified to model the relative relevance accurately based on noisy feedback, are appealing candidates and…

信息检索 · 计算机科学 2023-03-09 Yi Ren , Hongyan Tang , Siwen Zhu

Large language models (LLMs) offer impressive performance in various zero-shot and few-shot tasks. However, their success in zero-shot and few-shot settings may be affected by task contamination, a potential limitation that has not been…

计算与语言 · 计算机科学 2024-01-02 Changmao Li , Jeffrey Flanigan

This paper is concerned with learning of mixture regression models for individuals that are measured repeatedly. The adjective "unsupervised" implies that the number of mixing components is unknown and has to be determined, ideally by data…

统计方法学 · 统计学 2018-01-09 Peirong Xu , Heng Peng , Tao Huang

Meta-learning algorithms use past experience to learn to quickly solve new tasks. In the context of reinforcement learning, meta-learning algorithms acquire reinforcement learning procedures to solve new problems more efficiently by…

机器学习 · 计算机科学 2020-05-01 Abhishek Gupta , Benjamin Eysenbach , Chelsea Finn , Sergey Levine

This paper addresses the problem of data-driven model discrimination for unknown switched systems with unknown linear temporal logic (LTL) specifications, representing tasks, that govern their mode sequences, where only sampled data of the…

人工智能 · 计算机科学 2023-06-19 Zeyuan Jin , Nasim Baharisangari , Zhe Xu , Sze Zheng Yong

Data selection plays a crucial role in data-driven decision-making, including in large language models (LLMs), and is typically task-dependent. Properties such as data quality and diversity have been extensively studied and are known to…

机器学习 · 计算机科学 2025-09-30 Yuqing Wang , Shangding Gu

Regression mixture models are widely studied in statistics, machine learning and data analysis. Fitting regression mixtures is challenging and is usually performed by maximum likelihood by using the expectation-maximization (EM) algorithm.…

统计方法学 · 统计学 2014-09-25 Faicel Chamroukhi

Adapting large language models (LLMs) to a targeted task efficiently and effectively remains a fundamental challenge. Such adaptation often requires iteratively improving the model toward a targeted task, yet collecting high-quality…

计算与语言 · 计算机科学 2026-04-30 Ting-Wei Li , Sirui Chen , Jiaru Zou , Yingbing Huang , Tianxin Wei , Jingrui He , Hanghang Tong

Knowledge-editing updates knowledge of large language models (LLMs) and contributes to the interpretability and application of LLMs. However, knowledge applying is context-consistent: LLMs can recall the same knowledge in different…

计算与语言 · 计算机科学 2024-01-18 Youcheng Huang , Wenqiang Lei , Zheng Zhang , Jiancheng Lv , Shuicheng Yan

Instruction tuning (IT) is crucial to tailoring large language models (LLMs) towards human-centric interactions. Recent advancements have shown that the careful selection of a small, high-quality subset of IT data can significantly enhance…

计算与语言 · 计算机科学 2025-01-16 Liangxin Liu , Xuebo Liu , Derek F. Wong , Dongfang Li , Ziyi Wang , Baotian Hu , Min Zhang

Training modern large language models (LLMs) has become a veritable smorgasbord of algorithms and datasets designed to elicit particular behaviors, making it critical to develop techniques to understand the effects of datasets on the…

机器学习 · 计算机科学 2026-02-05 Ishaq Aden-Ali , Noah Golowich , Allen Liu , Abhishek Shetty , Ankur Moitra , Nika Haghtalab

Large Language Models (LLMs) are widely used for downstream tasks such as tabular classification, where ensuring fairness in their outputs is critical for inclusivity, equal representation, and responsible AI deployment. This study…

计算与语言 · 计算机科学 2025-08-26 Garima Chhikara , Kripabandhu Ghosh , Abhijnan Chakraborty

Deep learning models are often deployed in downstream tasks that the training procedure may not be aware of. For example, models solely trained to achieve accurate predictions may struggle to perform well on downstream tasks because…

机器学习 · 计算机科学 2024-09-27 Dishank Bansal , Ricky T. Q. Chen , Mustafa Mukadam , Brandon Amos

Optimizing training performance in large language models (LLMs) remains an essential challenge, particularly in improving model performance while maintaining computational costs. This work challenges the conventional approach of training…

计算与语言 · 计算机科学 2025-11-04 Chun-Hao Yang , Bo-Han Feng , Tzu-Yuan Lai , Yan Yu Chen , Yin-Kai Dean Huang , Shou-De Lin

Large language models (LLMs) rely on pretraining on massive and heterogeneous corpora, where training data composition has a decisive impact on training efficiency and downstream generalization under realistic compute and data budget…

计算与语言 · 计算机科学 2026-04-21 Zhuo Chen , Yuxuan Miao , Supryadi , Deyi Xiong

Recent advancements in AI alignment techniques have significantly improved the alignment of large language models (LLMs) with static human preferences. However, the dynamic nature of human preferences can render some prior training data…

机器学习 · 计算机科学 2024-12-24 Han Zhang , Zhuo Zhang , Yi Zhang , Yuanzhao Zhai , Hanyang Peng , Yu Lei , Yue Yu , Hui Wang , Bin Liang , Lin Gui , Ruifeng Xu

As LLMs become more widely deployed, there is increasing interest in directly optimizing for feedback from end users (e.g. thumbs up) in addition to feedback from paid annotators. However, training to maximize human feedback creates a…

机器学习 · 计算机科学 2025-02-25 Marcus Williams , Micah Carroll , Adhyyan Narang , Constantin Weisser , Brendan Murphy , Anca Dragan

Large Language Models (LLMs) have shown superior performance in various applications and fields. To achieve better performance on specialized domains such as law and advertisement, LLMs are often continue pre-trained on in-domain data.…

计算与语言 · 计算机科学 2024-06-25 Xiao Liang , Xinyu Hu , Simiao Zuo , Yeyun Gong , Qiang Lou , Yi Liu , Shao-Lun Huang , Jian Jiao

Large language models (LLMs) achieve remarkable advancements by leveraging tools to interact with environments, a critical step toward generalized AI. However, the standard supervised fine-tuning (SFT) approach, which relies on large-scale…

Machine unlearning poses challenges in removing mislabeled, contaminated, or problematic data from a pretrained model. Current unlearning approaches and evaluation metrics are solely focused on model predictions, which limits insight into…

机器学习 · 计算机科学 2026-04-13 Khoa Tran , Simon S. Woo