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The increasing scale of large language models (LLMs) brings emergent abilities to various complex tasks requiring reasoning, such as arithmetic and commonsense reasoning. It is known that the effective design of task-specific prompts is…

Computation and Language · Computer Science 2024-07-23 Shizhe Diao , Pengcheng Wang , Yong Lin , Rui Pan , Xiang Liu , Tong Zhang

Generative AI can now synthesize strikingly realistic images from text, yet output quality remains highly sensitive to how prompts are phrased. Direct Preference Optimization (DPO) offers a lightweight, off-policy alternative to RL for…

Computation and Language · Computer Science 2025-07-30 Anas Mohamed , Azal Ahmad Khan , Xinran Wang , Ahmad Faraz Khan , Shuwen Ge , Saman Bahzad Khan , Ayaan Ahmad , Ali Anwar

Large Language Models (LLMs) excel in various tasks, but they rely on carefully crafted prompts that often demand substantial human effort. To automate this process, in this paper, we propose a novel framework for discrete prompt…

Computation and Language · Computer Science 2025-05-02 Qingyan Guo , Rui Wang , Junliang Guo , Bei Li , Kaitao Song , Xu Tan , Guoqing Liu , Jiang Bian , Yujiu Yang

By conditioning on natural language instructions, large language models (LLMs) have displayed impressive capabilities as general-purpose computers. However, task performance depends significantly on the quality of the prompt used to steer…

Machine Learning · Computer Science 2023-03-13 Yongchao Zhou , Andrei Ioan Muresanu , Ziwen Han , Keiran Paster , Silviu Pitis , Harris Chan , Jimmy Ba

This study addresses the issues of semantic entanglement, unclear label structure, and insufficient feature representation in few-shot text classification, and proposes an optimization framework based on structured prompts to enhance…

Computation and Language · Computer Science 2026-03-02 Jiasen Zheng , Zijun Zhou , Huajun Zhang , Junjiang Lin , Jingyun Jia , Qi Wang

The code generation capabilities of Large Language Models (LLMs) have advanced applications like tool invocation and problem-solving. However, improving performance in code-related tasks remains challenging due to limited training data that…

Computation and Language · Computer Science 2025-08-28 Houxing Ren , Zimu Lu , Weikang Shi , Haotian Hou , Yunqiao Yang , Ke Wang , Aojun Zhou , Junting Pan , Mingjie Zhan , Hongsheng Li

Existing automatic prompt engineering methods are typically designed for discriminative tasks, where new task prompts are iteratively refined with limited feedback from a single metric reflecting a single aspect. However, these approaches…

Computation and Language · Computer Science 2025-01-15 Han He , Qianchu Liu , Lei Xu , Chaitanya Shivade , Yi Zhang , Sundararajan Srinivasan , Katrin Kirchhoff

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

The development of machine learning models for CT imaging depends on the availability of large, high-quality, and diverse annotated datasets. Although large volumes of CT images and reports are readily available in clinical picture…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Samuel Church , Joshua D. Warner , Danyal Maqbool , Xin Tie , Junjie Hu , Meghan G. Lubner , Tyler J. Bradshaw

Many automated processes such as auto-piloting rely on a good semantic segmentation as a critical component. To speed up performance, it is common to downsample the input frame. However, this comes at the cost of missed small objects and…

Computer Vision and Pattern Recognition · Computer Science 2019-07-17 Dmitrii Marin , Zijian He , Peter Vajda , Priyam Chatterjee , Sam Tsai , Fei Yang , Yuri Boykov

Evolutionary prompt optimization has demonstrated effectiveness in refining prompts for LLMs. However, existing approaches lack robust operators and efficient evaluation mechanisms. In this work, we propose several key improvements to…

Computation and Language · Computer Science 2025-11-10 Daniel Grießhaber , Maximilian Kimmich , Johannes Maucher , Ngoc Thang Vu

Recent developments in text classification using Large Language Models (LLMs) in the social sciences suggest that costs can be cut significantly, while performance can sometimes rival existing computational methods. However, with a wide…

Computation and Language · Computer Science 2026-03-27 Erkan Gunes , Christoffer Florczak , Tevfik Murat Yildirim

Prompt optimization improves the reasoning abilities of large language models (LLMs) without requiring parameter updates to the target model. Following heuristic-based "Think step by step" approaches, the field has evolved in two main…

Computation and Language · Computer Science 2025-07-25 Andreea Nica , Ivan Zakazov , Nicolas Mario Baldwin , Saibo Geng , Robert West

Preference optimization is a standard approach to fine-tuning large language models to align with human preferences. The quantity, diversity, and representativeness of the preference dataset are critical to the effectiveness of preference…

Computation and Language · Computer Science 2025-09-18 Yuu Jinnai , Ukyo Honda

Optimization problems often require domain-specific expertise to design problem-dependent methodologies. Recently, several approaches have gained attention by integrating large language models (LLMs) into genetic algorithms. Building on…

Neural and Evolutionary Computing · Computer Science 2025-04-15 Yamato Shinohara , Jinglue Xu , Tianshui Li , Hitoshi Iba

LLM-based automatic speech recognition (ASR), a well-established approach, connects speech foundation models to large language models (LLMs) through a speech-to-LLM projector, yielding promising results. A common design choice in these…

While Large Language Models (LLMs) demonstrate impressive reasoning capabilities, understanding and validating their knowledge utilization remains challenging. Chain-of-thought (CoT) prompting partially addresses this by revealing…

Computation and Language · Computer Science 2025-02-06 Aissatou Diallo , Antonis Bikakis , Luke Dickens , Anthony Hunter , Rob Miller

Prompting has become a practical method for utilizing pre-trained language models (LMs). This approach offers several advantages. It allows an LM to adapt to new tasks with minimal training and parameter updates, thus achieving efficiency…

Audio and Speech Processing · Electrical Eng. & Systems 2024-08-26 Kai-Wei Chang , Haibin Wu , Yu-Kai Wang , Yuan-Kuei Wu , Hua Shen , Wei-Cheng Tseng , Iu-thing Kang , Shang-Wen Li , Hung-yi Lee

Feature extraction from unstructured text is a critical step in many downstream classification pipelines, yet current approaches largely rely on hand-crafted prompts or fixed feature schemas. We formulate feature discovery as a…

Computation and Language · Computer Science 2026-01-21 Adrian Cosma , Oleg Szehr , David Kletz , Alessandro Antonucci , Olivier Pelletier

Prompt optimization automatically refines prompting expressions, unlocking the full potential of LLMs in downstream tasks. However, current prompt optimization methods are costly to train and lack sufficient interpretability. This paper…

Computation and Language · Computer Science 2024-12-23 Yajing Wang , Zongwei Luo , Jingzhe Wang , Zhanke Zhou , Yongqiang Chen , Bo Han