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Machine unlearning aims to efficiently eliminate the influence of specific training data, known as the forget set, from the model. However, existing unlearning methods for Large Language Models (LLMs) face a critical challenge: they rely…

计算与语言 · 计算机科学 2025-01-23 Anmol Mekala , Vineeth Dorna , Shreya Dubey , Abhishek Lalwani , David Koleczek , Mukund Rungta , Sadid Hasan , Elita Lobo

A significant barrier to the widespread adoption of Bayesian inference is the specification of prior distributions and likelihoods, which often requires specialized statistical expertise. This paper investigates the feasibility of using a…

人工智能 · 计算机科学 2025-08-13 Yongchao Huang

Generative, explainable, and flexible recommender systems, derived using Large Language Models (LLM) are promising and poorly adapted to the cold-start user situation, where there is little to no history of interaction. The current…

机器学习 · 计算机科学 2025-07-23 Yushang Zhao , Huijie Shen , Dannier Li , Lu Chang , Chengrui Zhou , Yinuo Yang

Federated learning faces huge challenges from model overfitting due to the lack of data and statistical diversity among clients. To address these challenges, this paper proposes a novel personalized federated learning method via Bayesian…

机器学习 · 计算机科学 2022-06-17 Xu Zhang , Yinchuan Li , Wenpeng Li , Kaiyang Guo , Yunfeng Shao

Large language models (LLMs) have shown great promise in recommender systems, where supervised fine-tuning (SFT) is commonly used for adaptation. Subsequent studies further introduce preference learning to incorporate negative samples into…

信息检索 · 计算机科学 2026-02-20 Bingqian Li , Bowen Zheng , Xiaolei Wang , Long Zhang , Jinpeng Wang , Sheng Chen , Wayne Xin Zhao , Ji-rong Wen

Large language models (LLMs) have been shown to be capable of impressive few-shot generalisation to new tasks. However, they still tend to perform poorly on multi-step logical reasoning problems. Here we carry out a comprehensive evaluation…

人工智能 · 计算机科学 2022-05-20 Antonia Creswell , Murray Shanahan , Irina Higgins

The capabilities of large language models (LLMs) are widely regarded as relying on autoregressive models (ARMs). We challenge this notion by introducing LLaDA, a diffusion model trained from scratch under the pre-training and supervised…

计算与语言 · 计算机科学 2025-10-21 Shen Nie , Fengqi Zhu , Zebin You , Xiaolu Zhang , Jingyang Ou , Jun Hu , Jun Zhou , Yankai Lin , Ji-Rong Wen , Chongxuan Li

Fine-tuning large language models (LLMs) with low-rank adaptation (LoRA) is a cost-effective way to incorporate information from a specific dataset. However, when a problem requires incorporating information from multiple datasets - as in…

机器学习 · 计算机科学 2026-04-03 Liyi Zhang , Jake Snell , Thomas L. Griffiths

While Large Language Models (LLMs) have demonstrated remarkable fluency in educational dialogues, most generative tutors primarily operate through intuitive, single-pass generation. This reliance on fast thinking precludes a dedicated…

人工智能 · 计算机科学 2026-03-31 Yuang Wei , Ruijia Li , Bo Jiang

Travel choice analysis is crucial for understanding individual travel behavior to develop appropriate transport policies and recommendation systems in Intelligent Transportation Systems (ITS). Despite extensive research, this domain faces…

人工智能 · 计算机科学 2024-06-25 Xuehao Zhai , Hanlin Tian , Lintong Li , Tianyu Zhao

Preference optimization, particularly through Reinforcement Learning from Human Feedback (RLHF), has achieved significant success in aligning Large Language Models (LLMs) to adhere to human intentions. Unlike offline alignment with a fixed…

机器学习 · 计算机科学 2024-11-06 Shenao Zhang , Donghan Yu , Hiteshi Sharma , Han Zhong , Zhihan Liu , Ziyi Yang , Shuohang Wang , Hany Hassan , Zhaoran Wang

Supervised fine-tuning (SFT) has become a crucial step for aligning pretrained large language models (LLMs) using supervised datasets of input-output pairs. However, despite being supervised, SFT is inherently limited by its generative…

计算与语言 · 计算机科学 2025-07-25 Siqi Guo , Ilgee Hong , Vicente Balmaseda , Changlong Yu , Liang Qiu , Xin Liu , Haoming Jiang , Tuo Zhao , Tianbao Yang

Personalized generation with frozen large language models requires a conditioning signal that is both compact and current. Existing personalization methods typically retrieve or summarize user histories in text, or compress them into static…

计算与语言 · 计算机科学 2026-05-27 Jinze Li , Xiaoyan Yang , Shuo Yang , Jinfeng Xu , Yue Shen , Jian Wang , Jinjie Gu , Edith Cheuk-Han Ngai

Large Language Models (LLMs) acquire extensive knowledge and remarkable abilities from extensive text corpora, making them powerful tools for various applications. To make LLMs more usable, aligning them with human preferences is essential.…

计算与语言 · 计算机科学 2024-10-21 Mozhi Zhang , Pengyu Wang , Chenkun Tan , Mianqiu Huang , Dong Zhang , Yaqian Zhou , Xipeng Qiu

Large language models often display undesirable behaviors embedded in their internal representations, undermining fairness, inconsistency drift, amplification of harmful content, and the propagation of unwanted patterns during extended…

计算与语言 · 计算机科学 2026-04-24 Afrozah Nadeem , Mark Dras , Usman Naseem

While scaling laws have been continuously validated in large language models (LLMs) with increasing model parameters, the inherent tension between the inference demands of LLMs and the limited resources of edge devices poses a critical…

Modern large language foundation models (LLM) have now entered the daily lives of millions of users. We ask a natural question whether it is possible to customize LLM for every user or every task. From system and industrial economy…

机器学习 · 计算机科学 2025-04-11 Jianqiao Wangni

Alignment, endowing a pre-trained Large language model (LLM) with the ability to follow instructions, is crucial for its real-world applications. Conventional supervised fine-tuning (SFT) methods formalize it as causal language modeling…

计算与语言 · 计算机科学 2024-12-18 Yuchen Fan , Yuzhong Hong , Qiushi Wang , Junwei Bao , Hongfei Jiang , Yang Song

Large Language Models (LLMs) have shown impressive progress in mathematical reasoning. While data augmentation is promising to enhance mathematical problem-solving ability, current approaches are predominantly limited to instance-level…

计算与语言 · 计算机科学 2025-06-17 Qizhi Pei , Lijun Wu , Zhuoshi Pan , Yu Li , Honglin Lin , Chenlin Ming , Xin Gao , Conghui He , Rui Yan

Large language models (LLMs) enable increasingly capable tutoring-style conversational agents, yet effective tutoring requires sensitivity to learners' affective and cognitive states beyond text alone. Facial expressions provide immediate…

人机交互 · 计算机科学 2026-04-20 Shuangquan Feng , Laura Fleig , Ruisen Tu , Philip Chi , Edmund Bu , Melinda Ozel , Junhua Ma , Teng Fei , Virginia R. de Sa