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Retrieval-augmented generation (RAG) systems rely on retrieval models for identifying relevant contexts and answer generation models for utilizing those contexts. However, retrievers exhibit imperfect recall and precision, limiting…

计算与语言 · 计算机科学 2026-04-29 Jerry Huang , Siddarth Madala , Risham Sidhu , Cheng Niu , Hao Peng , Julia Hockenmaier , Tong Zhang

Dense video captioning aims to generate multiple associated captions with their temporal locations from the video. Previous methods follow a sophisticated "localize-then-describe" scheme, which heavily relies on numerous hand-crafted…

计算机视觉与模式识别 · 计算机科学 2021-11-18 Teng Wang , Ruimao Zhang , Zhichao Lu , Feng Zheng , Ran Cheng , Ping Luo

Retrieval-augmented generation (RAG) has become a transformative approach for enhancing large language models (LLMs) by grounding their outputs in external knowledge sources. Yet, a critical question persists: how can vast volumes of…

信息检索 · 计算机科学 2025-04-29 Carlo Merola , Jaspinder Singh

Document chunking is a crucial component of Retrieval-Augmented Generation (RAG), as it directly affects the retrieval of relevant and precise context. Conventional fixed-length and recursive splitters often produce arbitrary, incoherent…

Current context augmentation methods, such as retrieval-augmented generation, are essential for solving knowledge-intensive reasoning tasks. However, they typically adhere to a rigid, brute-force strategy that executes retrieval at every…

计算与语言 · 计算机科学 2026-01-15 Rubing Chen , Jian Wang , Wenjie Li , Xiao-Yong Wei , Qing Li

Autoregressive generation is a powerful approach for high-fidelity image synthesis, but it remains computationally demanding and slow even on the most advanced accelerators. While speculative decoding has been explored to mitigate this…

计算机视觉与模式识别 · 计算机科学 2026-05-11 Selin Yildirim , Subhajit Dutta Chowdhury , Mohammad Mahdi Kamani , Vikram Appia , Deming Chen

To tackle long-context reasoning tasks without the quadratic complexity of standard attention mechanisms, approaches based on agent memory have emerged, which typically maintain a dynamically updated memory when linearly processing document…

计算与语言 · 计算机科学 2026-05-12 Baibei Ji , Xiaoyang Weng , Juntao Li , Zecheng Tang , Yihang Lou , Min Zhang

Textual data question answering has gained significant attention due to its growing applicability. Recently, a novel approach leveraging the Retrieval-Augmented Generation (RAG) method was introduced, utilizing the Prize-Collecting Steiner…

机器学习 · 计算机科学 2025-04-22 Manthankumar Solanki

Generative retrieval (GR) ranks documents by autoregressively generating document identifiers. Because many GR methods rely on trie-constrained beam search, they are vulnerable to early pruning of relevant prefixes under finite-beam…

信息检索 · 计算机科学 2026-05-26 Kidist Amde Mekonnen , Yongkang Li , Yubao Tang , Simon Lupart , Maarten de Rijke

State-of-the-art neural machine translation models generate a translation from left to right and every step is conditioned on the previously generated tokens. The sequential nature of this generation process causes fundamental latency in…

计算与语言 · 计算机科学 2020-07-01 Jungo Kasai , James Cross , Marjan Ghazvininejad , Jiatao Gu

Retrieval-augmented generation is increasingly used for financial question answering over long regulatory filings, yet reliability depends on retrieving the exact context needed to justify answers in high stakes settings. We study a…

计算与语言 · 计算机科学 2026-02-23 Amine Kobeissi , Philippe Langlais

Large Language Models (LLMs) excel at code generation but struggle with complex problems. Retrieval-Augmented Generation (RAG) mitigates this issue by integrating external knowledge, yet retrieval models often miss relevant context, and…

软件工程 · 计算机科学 2026-01-29 Shahd Seddik , Fahd Seddik , Iman Saberi , Fatemeh Fard , Minh Hieu Huynh , Patanamon Thongtanunam

Occluded person re-identification (Re-ID), the task of searching for the same person's images in occluded environments, has attracted lots of attention in the past decades. Recent approaches concentrate on improving performance on occluded…

计算机视觉与模式识别 · 计算机科学 2024-01-11 Zi Wang , Huaibo Huang , Aihua Zheng , Chenglong Li , Ran He

Attention-based encoder-decoder framework is widely used in the scene text recognition task. However, for the current state-of-the-art(SOTA) methods, there is room for improvement in terms of the efficient usage of local visual and global…

计算机视觉与模式识别 · 计算机科学 2021-11-16 Mengmeng Cui , Wei Wang , Jinjin Zhang , Liang Wang

Retrieval augmentation has become an effective solution to empower large language models (LLMs) with external and verified knowledge sources from the database, which overcomes the limitations and hallucinations of LLMs in handling…

信息检索 · 计算机科学 2023-11-21 Tong Wu , Yulei Qin , Enwei Zhang , Zihan Xu , Yuting Gao , Ke Li , Xing Sun

Recent advances in conditional recurrent language modelling have mainly focused on network architectures (e.g., attention mechanism), learning algorithms (e.g., scheduled sampling and sequence-level training) and novel applications (e.g.,…

计算与语言 · 计算机科学 2016-05-13 Kyunghyun Cho

Current state-of-the-art large language models are effective in generating high-quality text and encapsulating a broad spectrum of world knowledge. These models, however, often hallucinate and lack locally relevant factual data.…

软件工程 · 计算机科学 2024-02-21 Anton Shapkin , Denis Litvinov , Yaroslav Zharov , Egor Bogomolov , Timur Galimzyanov , Timofey Bryksin

Retrieval augmented generation (RAG) has been widely adopted to help Large Language Models (LLMs) to process tasks involving long documents. However, existing retrieval models are not designed for long document retrieval and fail to address…

信息检索 · 计算机科学 2026-02-13 David Jiahao Fu , Lam Thanh Do , Jiayu Li , Kevin Chen-Chuan Chang

Diffusion Language Models (DLMs) have recently achieved significant success due to their any-order generation capabilities. However, existing inference methods typically rely on local, immediate-step metrics such as confidence or entropy…

计算与语言 · 计算机科学 2025-12-03 Kecheng Chen , Ziru Liu , Xijia Tao , Hui Liu , Xinyu Fu , Suiyun Zhang , Dandan Tu , Lingpeng Kong , Rui Liu , Haoliang Li

Parametric Retrieval-Augmented Generation (PRAG) encodes external documents into lightweight parameter modules that can be retrieved and merged at inference time, offering a promising alternative to in-context retrieval augmentation.…

计算与语言 · 计算机科学 2026-04-30 Weihang Su , Hanwen Zhang , Qingyao Ai , Yiqun Liu