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Query reformulation is a well-known problem in Information Retrieval (IR) aimed at enhancing single search successful completion rate by automatically modifying user's input query. Recent methods leverage Large Language Models (LLMs) to…

Information Retrieval · Computer Science 2024-09-18 Wonduk Seo , Haojie Zhang , Yueyang Zhang , Changhao Zhang , Songyao Duan , Lixin Su , Daiting Shi , Jiashu Zhao , Dawei Yin

Retrieval Augmented Generation (RAG) enables Large Language Models (LLMs) to generalize to new information by decoupling reasoning capabilities from static knowledge bases. Traditional RAG enhancements have explored vertical…

Software Engineering · Computer Science 2025-04-30 Michael Iannelli , Sneha Kuchipudi , Vera Dvorak

Fine-tuning large language models (LLMs) under resource constraints is a significant challenge in deep learning. Low-Rank Adaptation (LoRA), pruning, and quantization are all effective methods for improving resource efficiency. However,…

Machine Learning · Computer Science 2024-11-22 Changhai Zhou , Shiyang Zhang , Yuhua Zhou , Zekai Liu , Shichao Weng

While large language models (LLMs) have shown remarkable capabilities in natural language processing, they struggle with complex, multi-step reasoning tasks involving knowledge graphs (KGs). Existing approaches that integrate LLMs and KGs…

Computation and Language · Computer Science 2024-09-25 Zixuan Dong , Baoyun Peng , Yufei Wang , Jia Fu , Xiaodong Wang , Yongxue Shan , Xin Zhou

Existing dialogue systems rely on Query Suggestion (QS) to enhance user engagement. Recent efforts typically employ large language models with Click-Through Rate (CTR) model, yet fail in cold-start scenarios due to their heavy reliance on…

Computation and Language · Computer Science 2026-03-25 Qi Sun , Kejun Xiao , Huaipeng Zhao , Tao Luo , Xiaoyi Zeng

We introduce the \textit{Extract-Refine-Retrieve-Read} (ERRR) framework, a novel approach designed to bridge the pre-retrieval information gap in Retrieval-Augmented Generation (RAG) systems through query optimization tailored to meet the…

Computation and Language · Computer Science 2025-09-22 Youan Cong , Pritom Saha Akash , Cheng Wang , Kevin Chen-Chuan Chang

Recent advancements in large language models (LLMs) have been driven by their emergent reasoning capabilities, particularly through long chain-of-thought (CoT) prompting, which enables thorough exploration and deliberation. Despite these…

Computation and Language · Computer Science 2026-04-09 Junnan Liu , Hongwei Liu , Songyang Zhang , Kai Chen

Retrieval-Augmented Generation (RAG) improves Large Language Models (LLMs) by grounding generation in external, non-parametric knowledge. However, when a task requires choosing among competing options, simply grounding generation in broadly…

Computation and Language · Computer Science 2026-03-20 Hangeol Chang , Changsun Lee , Seungjoon Rho , Junho Yeo , Jong Chul Ye

Modern quantitative trading increasingly relies on systematic models to extract predictive signals from large-scale financial data, where alpha factor discovery plays a central role in transforming market observations into tradable signals.…

Computational Engineering, Finance, and Science · Computer Science 2026-05-18 Lingzhe Zhang , Tong Jia , Yunpeng Zhai , Zixuan Xie , Chiming Duan , Minghua He , Philip S. Yu , Ying Li

This paper presents the submission of the UDInfo team to the SIGIR 2025 LiveRAG Challenge. We introduce PreQRAG, a Retrieval Augmented Generation (RAG) architecture designed to improve retrieval and generation quality through targeted…

Information Retrieval · Computer Science 2025-06-24 Damian Martinez , Catalina Riano , Hui Fang

Logical reasoning is a key task for artificial intelligence due to it's role in major downstream tasks such as Question Answering, Summarization. Recent methods in improving the reasoning ability of LLMs fall short in correctly converting a…

Machine Learning · Computer Science 2025-06-24 Koushik Viswanadha , Deepanway Ghosal , Somak Aditya

This study aims to improve the accuracy and quality of large-scale language models (LLMs) in answering questions by integrating Elasticsearch into the Retrieval Augmented Generation (RAG) framework. The experiment uses the Stanford Question…

Information Retrieval · Computer Science 2024-10-21 Jiajing Chen , Runyuan Bao , Hongye Zheng , Zhen Qi , Jianjun Wei , Jiacheng Hu

Despite the promise of RLHF in aligning LLMs with human preferences, it often leads to superficial alignment, prioritizing stylistic changes over improving downstream performance of LLMs. Underspecified preferences could obscure directions…

Computation and Language · Computer Science 2024-03-22 Kyungjae Lee , Dasol Hwang , Sunghyun Park , Youngsoo Jang , Moontae Lee

Large scale analytics engines have become a core dependency for modern data-driven enterprises to derive business insights and drive actions. These engines support a large number of analytic jobs processing huge volumes of data on a daily…

Databases · Computer Science 2024-01-03 Brandon Haynes , Rana Alotaibi , Anna Pavlenko , Jyoti Leeka , Alekh Jindal , Yuanyuan Tian

Large language model (LLM)-based search agents have proven promising for addressing knowledge-intensive problems by incorporating information retrieval capabilities. Existing works largely focus on optimizing the reasoning paradigms of…

Artificial Intelligence · Computer Science 2026-01-09 Tongyu Wen , Guanting Dong , Zhicheng Dou

This paper explores meta-learning in sequential recommendation to alleviate the item cold-start problem. Sequential recommendation aims to capture user's dynamic preferences based on historical behavior sequences and acts as a key component…

Information Retrieval · Computer Science 2020-12-11 Yujia Zheng , Siyi Liu , Zekun Li , Shu Wu

Autonomous Machine Learning Engineering (MLE) requires agents to perform sustained, iterative optimization over long horizons. While recent LLM-based agents show promise, current prompt-based agents for MLE suffer from behavioral stagnation…

Machine Learning · Computer Science 2026-05-08 Yuzhu Cai , Zexi Liu , Xinyu Zhu , Cheng Wang , Yanfeng Wang , Siheng Chen

Large Language Models (LLMs), despite their remarkable capabilities, are prone to generating hallucinated or outdated content due to their static internal knowledge. While Retrieval-Augmented Generation (RAG) integrated with Reinforcement…

Computation and Language · Computer Science 2026-01-14 Zhiwen Tan , Jiaming Huang , Qintong Wu , Hongxuan Zhang , Chenyi Zhuang , Jinjie Gu

Electronic design engineers often struggle to efficiently access relevant information for tasks like design verification and technology development. While large language models (LLMs) can enhance productivity as conversational agents,…

Computation and Language · Computer Science 2025-06-10 Luyao Shi , Michael Kazda , Charles Schmitter , Hemlata Gupta

Large Language Models (LLMs) deployed on edge devices learn through fine-tuning and updating a certain portion of their parameters. Although such learning methods can be optimized to reduce resource utilization, the overall required…

Machine Learning · Computer Science 2024-05-09 Ruiyang Qin , Zheyu Yan , Dewen Zeng , Zhenge Jia , Dancheng Liu , Jianbo Liu , Zhi Zheng , Ningyuan Cao , Kai Ni , Jinjun Xiong , Yiyu Shi