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In traffic engineering, fixed-time traffic signal control remains widely used for its low cost, stability, and interpretability. However, its design relies on hand-crafted formulas (e.g., Webster) and manual re-timing by engineers to adapt…

机器学习 · 计算机科学 2026-04-23 Leizhen Wang , Peibo Duan , Hao Wang , Yue Wang , Jian Xu , Nan Zheng , Zhenliang Ma

While the ``deep reasoning'' paradigm has spurred significant advances in verifiable domains like mathematics, its application to open-ended, creative generation remains a critical challenge. The two dominant methods for instilling…

Large Multimodal Models (LMMs) have recently demonstrated their proficiency in holistic visual comprehension. However, most of them struggle to tackle region-level perception guided by visual prompts, especially for cases where multiple…

计算机视觉与模式识别 · 计算机科学 2026-05-05 Yun Xing , Hanyuan Liu , Jiahao Nie , Shijian Lu

Neural networks are predominantly trained using gradient-based methods, yet in many applications their final predictions remain far from the accuracy attainable within the model's expressive capacity. We introduce Linearized Subspace…

机器学习 · 计算机科学 2026-01-21 Wenbo Cao , Weiwei Zhang

As large language models (LLMs) show impressive performance on complex tasks, they still struggle with longer contextual understanding and high computational costs. To balance efficiency and quality, we introduce LLMSteer, a…

机器学习 · 计算机科学 2024-11-22 Zhuohan Gu , Jiayi Yao , Kuntai Du , Junchen Jiang

Linear activation steering is a powerful approach for eliciting the capabilities of large language models and specializing their behavior using limited labeled data. While effective, existing methods often apply a fixed steering strength to…

计算与语言 · 计算机科学 2026-04-28 Brandon Hsu , Daniel Beaglehole , Adityanarayanan Radhakrishnan , Mikhail Belkin

Generative Adversarial Networks (GANs) have been shown to be powerful and flexible priors when solving inverse problems. One challenge of using them is overcoming representation error, the fundamental limitation of the network in…

机器学习 · 计算机科学 2022-04-12 Sean Gunn , Jorio Cocola , Paul Hand

Autonomous research agents can already run machine learning experiments without human supervision, but many rely on a narrow search strategy: they repeatedly modify one program and keep changes only when they improve the current best…

神经与进化计算 · 计算机科学 2026-05-15 Ahmadreza Jeddi , Minh Ngoc Le , Hakki C. Karaimer , Konstantinos G. Derpanis , Babak Taati

Activation steering provides parameter-efficient control over large language models (LLMs) at inference time, but many methods rely on off-distribution supervision and discrete masking, leading to brittle interventions. We propose ROAST…

机器学习 · 计算机科学 2026-02-17 Xuanbo Su , Hao Luo , Yingfang Zhang , Lijun Zhang

In recent years, a significant number of high-quality pretrained models have emerged, greatly impacting Natural Language Understanding (NLU), Natural Language Generation (NLG), and Text Representation tasks. Traditionally, these models are…

计算与语言 · 计算机科学 2023-06-21 Changshang Xue , Xiande Zhong , Xiaoqing Liu

This paper explores the seamless integration of Generative AI (GenAI) and Evolutionary Algorithms (EAs) within the domain of large-scale multi-objective optimization. Focusing on the transformative role of Large Language Models (LLMs), our…

神经与进化计算 · 计算机科学 2024-05-14 Gaurav Singh , Kavitesh Kumar Bali

Aligning large language models (LLMs) with human objectives is crucial for real-world applications. However, fine-tuning LLMs for alignment often suffers from unstable training and requires substantial computing resources. Test-time…

人工智能 · 计算机科学 2024-11-05 Lingkai Kong , Haorui Wang , Wenhao Mu , Yuanqi Du , Yuchen Zhuang , Yifei Zhou , Yue Song , Rongzhi Zhang , Kai Wang , Chao Zhang

Large Language Models (LLMs) exhibit world knowledge and inference capabilities, making them powerful tools for various applications. This paper proposes a feedback loop mechanism that leverages these capabilities to tune Evolution…

机器学习 · 计算机科学 2024-05-21 Oliver Kramer

This paper introduces an approach that integrates self-adaptive Evolution Strategies (ES) with Large Language Models (LLMs) to enhance the explainability of complex optimization processes. By employing a self-adaptive ES equipped with a…

神经与进化计算 · 计算机科学 2024-08-06 Jill Baumann , Oliver Kramer

Automatic Speech Recognition (ASR) systems remain prone to errors that affect downstream applications. In this paper, we propose LIR-ASR, a heuristic optimized iterative correction framework using LLMs, inspired by human auditory…

音频与语音处理 · 电气工程与系统科学 2025-09-23 Yutong Liu , Ziyue Zhang , Cheng Huang , Yongbin Yu , Xiangxiang Wang , Yuqing Cai , Nyima Tashi

A key challenge in AI alignment is guiding large language models (LLMs) to follow desired behaviors at test time. Activation steering, which modifies internal model activations during inference, offers a potential solution. However, prior…

机器学习 · 计算机科学 2025-03-04 Reza Bayat , Ali Rahimi-Kalahroudi , Mohammad Pezeshki , Sarath Chandar , Pascal Vincent

This work examines whether activating latent subspaces in language models (LLMs) can steer scientific code generation toward a specific programming language. Five causal LLMs were first evaluated on scientific coding prompts to quantify…

人工智能 · 计算机科学 2025-06-24 Vansh Sharma , Venkat Raman

As the capabilities of Vision Language Models (VLMs) continue to improve, they are increasingly targeted by jailbreak attacks. Existing defense methods face two major limitations: (1) they struggle to ensure safety without compromising the…

密码学与安全 · 计算机科学 2025-09-29 Xiyu Zeng , Siyuan Liang , Liming Lu , Haotian Zhu , Enguang Liu , Jisheng Dang , Yongbin Zhou , Shuchao Pang

Large Language Models (LLMs) have made remarkable breakthroughs in reasoning, yet continue to struggle with hallucinations, logical errors, and inability to self-correct during complex multi-step tasks. Current approaches like…

计算与语言 · 计算机科学 2025-04-22 Lingrui Mei , Shenghua Liu , Yiwei Wang , Baolong Bi , Yuyao Ge , Jun Wan , Yurong Wu , Xueqi Cheng

Large language models are powerful text processors and reasoners, but are still subject to limitations including outdated knowledge and hallucinations, which necessitates connecting them to the world. Retrieval-augmented large language…

计算与语言 · 计算机科学 2023-10-24 Zhihong Shao , Yeyun Gong , Yelong Shen , Minlie Huang , Nan Duan , Weizhu Chen
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