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Related papers: Lost-in-the-Middle in Long-Text Generation: Synthe…

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Retrieval-Augmented Generation (RAG) systems rely on retrieved documents being concatenated into a model's input context, making both document ordering and context size critical yet controversial design choices. Prior work reports…

Information Retrieval · Computer Science 2026-05-28 Jorge Gabín , Anxo Perez , Javier Parapar

The pace of evolution of Large Language Models (LLMs) necessitates new approaches for rigorous and comprehensive evaluation. Traditional human annotation is increasingly impracticable due to the complexities and costs involved in generating…

Computation and Language · Computer Science 2025-02-21 Arkil Patel , Siva Reddy , Dzmitry Bahdanau

Retrieval-Augmented Generation (RAG) merges retrieval methods with deep learning advancements to address the static limitations of large language models (LLMs) by enabling the dynamic integration of up-to-date external information. This…

Information Retrieval · Computer Science 2026-05-19 Yizheng Huang , Jimmy Huang

Retrieval-Augmented Generation (RAG) systems face significant performance gaps when applied to technical domains requiring precise information extraction from complex documents. Current evaluation methodologies relying on document-level…

Machine Learning · Computer Science 2025-02-25 Aryan Jadon , Avinash Patil , Shashank Kumar

Large language models (LLMs) are increasingly used for data generation. However, creating evaluation benchmarks raises the bar for this emerging paradigm. Benchmarks must target specific phenomena, penalize exploiting shortcuts, and be…

Computation and Language · Computer Science 2025-10-07 Alexander Gill , Abhilasha Ravichander , Ana Marasović

Interleaved text-and-image generation has been an intriguing research direction, where the models are required to generate both images and text pieces in an arbitrary order. Despite the emerging advancements in interleaved generation, the…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Minqian Liu , Zhiyang Xu , Zihao Lin , Trevor Ashby , Joy Rimchala , Jiaxin Zhang , Lifu Huang

Retrieval-Augmented Generation (RAG) is a framework for grounding Large Language Models (LLMs) in external, up-to-date information. However, recent advancements in context window size allow LLMs to process inputs of up to 128K tokens or…

Machine Learning · Computer Science 2026-02-26 Seongwoong Shim , Myunsoo Kim , Jae Hyeon Cho , Byung-Jun Lee

Evaluating long document summaries remains the primary bottleneck in summarization research. Existing metrics correlate weakly with human judgments and produce aggregate scores without explaining deficiencies or guiding improvement,…

Computation and Language · Computer Science 2026-04-29 Huyen Nguyen , Haoxuan Zhang , Yang Zhang , Haihua Chen , Junhua Ding

Recent advancements in Large Language Models (LLMs) have significantly enhanced their ability to process long contexts, yet a notable gap remains in generating long, aligned outputs. This limitation stems from a training gap where…

Computation and Language · Computer Science 2024-11-01 Shanghaoran Quan , Tianyi Tang , Bowen Yu , An Yang , Dayiheng Liu , Bofei Gao , Jianhong Tu , Yichang Zhang , Jingren Zhou , Junyang Lin

Large Language Models (LLMs) have shown promising performance in summary evaluation tasks, yet they face challenges such as high computational costs and the Lost-in-the-Middle problem where important information in the middle of long…

Computation and Language · Computer Science 2024-01-19 Yunshu Wu , Hayate Iso , Pouya Pezeshkpour , Nikita Bhutani , Estevam Hruschka

Screening patients for enrollment is a well-known, labor-intensive bottleneck that leads to under-enrollment and, ultimately, trial failures. Recent breakthroughs in large language models (LLMs) offer a promising opportunity to use…

Computation and Language · Computer Science 2026-04-30 Ziyi Chen , Mengxian Lyu , Cheng Peng , Yonghui Wu

In this paper, we identify a critical problem, "lost-in-retrieval", in retrieval-augmented multi-hop question answering (QA): the key entities are missed in LLMs' sub-question decomposition. "Lost-in-retrieval" significantly degrades the…

Computation and Language · Computer Science 2025-05-29 Rongzhi Zhu , Xiangyu Liu , Zequn Sun , Yiwei Wang , Wei Hu

The current literature regarding generation of complex, realistic synthetic tabular data, particularly for randomized controlled trials (RCTs), often ignores missing data. However, missing data are common in RCT data and often are not…

Other Statistics · Statistics 2025-12-02 Niki Z. Petrakos , Erica E. M. Moodie , Nicolas Savy

LLMs have demonstrated remarkable proficiency in understanding tasks but continue to struggle with long-context comprehension, particularly with content located in the middle of extensive inputs. This limitation, known as the…

Computation and Language · Computer Science 2025-03-03 James Begin , Namit Agrawal , Eshan Singh , Yicheng Fu , Sean O'Brien , Vasu Sharma , Kevin Zhu

Large language models (LLMs) have demonstrated strong performance on function-level code generation benchmarks, yet real-world software development increasingly demands class-level implementations that integrate multiple methods,…

Software Engineering · Computer Science 2025-11-06 Musfiqur Rahman , SayedHassan Khatoonabadi , Emad Shihab

As text generation has become a core capability of modern Large Language Models (LLMs), it underpins a wide range of downstream applications. However, most existing LLMs rely on autoregressive (AR) generation, producing one token at a time…

Computation and Language · Computer Science 2026-02-11 Lingzhe Zhang , Liancheng Fang , Chiming Duan , Minghua He , Leyi Pan , Pei Xiao , Shiyu Huang , Yunpeng Zhai , Xuming Hu , Philip S. Yu , Aiwei Liu

Large language models are transitioning from generalpurpose knowledge engines to realworld problem solvers, yet optimizing them for deep search tasks remains challenging. The central bottleneck lies in the extreme sparsity of highquality…

Artificial Intelligence · Computer Science 2026-02-17 Zheng Chu , Xiao Wang , Jack Hong , Huiming Fan , Yuqi Huang , Yue Yang , Guohai Xu , Chenxiao Zhao , Cheng Xiang , Shengchao Hu , Dongdong Kuang , Ming Liu , Bing Qin , Xing Yu

While large language models (LLMs) are equipped with longer text input capabilities than before, they are struggling to seek correct information in long contexts. The "lost in the middle" problem challenges most LLMs, referring to the…

Computation and Language · Computer Science 2024-08-15 Junqing He , Kunhao Pan , Xiaoqun Dong , Zhuoyang Song , Yibo Liu , Qianguo Sun , Yuxin Liang , Hao Wang , Enming Zhang , Jiaxing Zhang

Retrieval-Augmented Generation (RAG) is a technique that enhances the capabilities of large language models (LLMs) by incorporating external knowledge sources. This method addresses common LLM limitations, including outdated information and…

Computation and Language · Computer Science 2024-07-16 Yuanjie Lyu , Zhiyu Li , Simin Niu , Feiyu Xiong , Bo Tang , Wenjin Wang , Hao Wu , Huanyong Liu , Tong Xu , Enhong Chen

Retrieval-augmented generation (RAG) effectively addresses issues of static knowledge and hallucination in large language models. Existing studies mostly focus on question scenarios with clear user intents and concise answers. However, it…

Computation and Language · Computer Science 2025-02-18 Shuting Wang , Xin Yu , Mang Wang , Weipeng Chen , Yutao Zhu , Zhicheng Dou