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In large language models (LLM)-based recommendation systems (LLM-RSs), accurately predicting user preferences by leveraging the general knowledge of LLMs is possible without requiring extensive training data. By converting recommendation…

Information Retrieval · Computer Science 2024-12-20 Genki Kusano , Kosuke Akimoto , Kunihiro Takeoka

Prompt engineering is an effective but labor-intensive way to control text-to-image (T2I) generative models. Its time-intensive nature and complexity have spurred the development of algorithms for automated prompt generation. However, these…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Yutong He , Alexander Robey , Naoki Murata , Yiding Jiang , Joshua Nathaniel Williams , George J. Pappas , Hamed Hassani , Yuki Mitsufuji , Ruslan Salakhutdinov , J. Zico Kolter

Large Language Models (LLMs) have shown impressive capabilities in many scenarios, but their performance depends, in part, on the choice of prompt. Past research has focused on optimizing prompts specific to a task. However, much less…

Computation and Language · Computer Science 2026-04-07 Lechen Zhang , Tolga Ergen , Lajanugen Logeswaran , Moontae Lee , David Jurgens

Vision-language foundation models (VLMs) show promise for diverse imaging tasks but often underperform on medical benchmarks. Prior efforts to improve performance include model finetuning, which requires large domain-specific datasets and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Arnav Singhvi , Vasiliki Bikia , Asad Aali , Akshay Chaudhari , Roxana Daneshjou

The efficacy of large language models (LLMs) in understanding and generating natural language has aroused a wide interest in developing prompt-based methods to harness the power of black-box LLMs. Existing methodologies usually prioritize a…

Artificial Intelligence · Computer Science 2024-03-06 Wenyang Hu , Yao Shu , Zongmin Yu , Zhaoxuan Wu , Xiangqiang Lin , Zhongxiang Dai , See-Kiong Ng , Bryan Kian Hsiang Low

In this paper, we introduce a black-box prompt optimization method that uses an attacker LLM agent to uncover higher levels of memorization in a victim agent, compared to what is revealed by prompting the target model with the training data…

Computation and Language · Computer Science 2025-02-11 Aly M. Kassem , Omar Mahmoud , Niloofar Mireshghallah , Hyunwoo Kim , Yulia Tsvetkov , Yejin Choi , Sherif Saad , Santu Rana

Large language models (LLMs) have demonstrated remarkable and steadily improving performance across a wide range of tasks. However, LLM performance may be highly sensitive to prompt variations especially in scenarios with limited openness…

Computation and Language · Computer Science 2026-03-05 Xin Yang , Letian Li , Abudukelimu Wuerkaixi , Xuxin Cheng , Cao Liu , Ke Zeng , Xunliang Cai , Wenyuan Jiang

Prompt optimization aims to find the best prompt to a large language model (LLM) for a given task. LLMs have been successfully used to help find and improve prompt candidates for single-step tasks. However, realistic tasks for agents are…

Computation and Language · Computer Science 2024-10-04 Yongchao Chen , Jacob Arkin , Yilun Hao , Yang Zhang , Nicholas Roy , Chuchu Fan

Due to limited supervised training data, large language models (LLMs) are typically pre-trained via a self-supervised "predict the next word" objective on a vast amount of unstructured text data. To make the resulting model useful to users,…

Computation and Language · Computer Science 2026-01-30 Ajay Patel , Colin Raffel , Chris Callison-Burch

Prompt-based learning has been an effective paradigm for large pretrained language models (LLM), enabling few-shot or even zero-shot learning. Black-box prompt search has received growing interest recently for its distinctive properties of…

Computation and Language · Computer Science 2023-10-20 Han Zhou , Xingchen Wan , Ivan Vulić , Anna Korhonen

Large Language Models (LLMs) have shown remarkable success, and their multimodal expansions (MLLMs) further unlock capabilities spanning images, videos, and other modalities beyond text. However, despite this shift, prompt optimization…

Machine Learning · Computer Science 2026-02-20 Yumin Choi , Dongki Kim , Jinheon Baek , Sung Ju Hwang

Optimizing black-box functions is a fundamental problem in science and engineering. To solve this problem, many approaches learn a surrogate function that estimates the underlying objective from limited historical evaluations. Large…

Machine Learning · Computer Science 2025-10-23 Tung Nguyen , Aditya Grover

Prompting with natural language instructions has recently emerged as a popular method of harnessing the capabilities of large language models. Given the inherent ambiguity present in natural language, it is intuitive to consider the…

Computation and Language · Computer Science 2023-10-20 Mayank Mishra , Prince Kumar , Riyaz Bhat , Rudra Murthy , Danish Contractor , Srikanth Tamilselvam

Prompts for pre-trained language models (PLMs) have shown remarkable performance by bridging the gap between pre-training tasks and various downstream tasks. Among these methods, prompt tuning, which freezes PLMs and only tunes soft…

Computation and Language · Computer Science 2022-03-15 Yuxian Gu , Xu Han , Zhiyuan Liu , Minlie Huang

We present a new method LiST is short for Lite Prompted Self-Training for parameter-efficient fine-tuning of large pre-trained language models (PLMs) for few-shot learning. LiST improves over recent methods that adopt prompt-based…

Computation and Language · Computer Science 2022-05-20 Yaqing Wang , Subhabrata Mukherjee , Xiaodong Liu , Jing Gao , Ahmed Hassan Awadallah , Jianfeng Gao

Black-Box prompt optimization methods have emerged as a promising strategy for refining input prompts to better align large language models (LLMs), thereby enhancing their task performance. Although these methods have demonstrated…

Computation and Language · Computer Science 2025-05-14 Ziyu Zhou , Yihang Wu , Jingyuan Yang , Zhan Xiao , Rongjun Li

Large language models (LLMs) have become widely adopted as automated judges for evaluating AI-generated content. Despite their success, aligning LLM-based evaluations with human judgments remains challenging. While supervised fine-tuning on…

Artificial Intelligence · Computer Science 2026-02-13 Bo Pan , Xuan Kan , Kaitai Zhang , Yan Yan , Shunwen Tan , Zihao He , Zixin Ding , Junjie Wu , Liang Zhao

Visual instruction tuning adapts pre-trained Multimodal Large Language Models (MLLMs) to follow human instructions for real-world applications. However, the rapid growth of these datasets introduces significant redundancy, leading to…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Jinhe Bi , Aniri , Yifan Wang , Danqi Yan , Wenke Huang , Zengjie Jin , Xiaowen Ma , Sikuan Yan , Artur Hecker , Mang Ye , Xun Xiao , Hinrich Schuetze , Volker Tresp , Yunpu Ma

Bayesian Optimization (BO) has been widely used to efficiently optimize expensive black-box functions with limited evaluations. In this paper, we investigate the use of BO for prompt engineering to enhance text classification with Large…

Artificial Intelligence · Computer Science 2025-10-17 Adam Ballew , Jingbo Wang , Shaogang Ren

With the surge of large-scale pre-trained models (PTMs), fine-tuning these models to numerous downstream tasks becomes a crucial problem. Consequently, parameter efficient transfer learning (PETL) of large models has grasped huge attention.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Changdae Oh , Hyeji Hwang , Hee-young Lee , YongTaek Lim , Geunyoung Jung , Jiyoung Jung , Hosik Choi , Kyungwoo Song