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Existing research on multimodal relation extraction (MRE) faces two co-existing challenges, internal-information over-utilization and external-information under-exploitation. To combat that, we propose a novel framework that simultaneously…

计算机视觉与模式识别 · 计算机科学 2023-05-26 Shengqiong Wu , Hao Fei , Yixin Cao , Lidong Bing , Tat-Seng Chua

Given the vast scale of the Web, crawling prioritisation techniques based on link graph traversal, popularity, link analysis, and textual content are frequently applied to surface documents that are most likely to be valuable. While…

信息检索 · 计算机科学 2025-07-03 Francesca Pezzuti , Sean MacAvaney , Nicola Tonellotto

With the need of fast retrieval speed and small memory footprint, document hashing has been playing a crucial role in large-scale information retrieval. To generate high-quality hashing code, both semantics and neighborhood information are…

信息检索 · 计算机科学 2021-05-28 Zijing Ou , Qinliang Su , Jianxing Yu , Bang Liu , Jingwen Wang , Ruihui Zhao , Changyou Chen , Yefeng Zheng

Commercial web search engines employ near-duplicate detection to ensure that users see each relevant result only once, albeit the underlying web crawls typically include (near-)duplicates of many web pages. We revisit the risks and…

One of the major challenges in coreference resolution is how to make use of entity-level features defined over clusters of mentions rather than mention pairs. However, coreferent mentions usually spread far apart in an entire text, which…

计算与语言 · 计算机科学 2023-07-25 Lu Liu , Zhenqiao Song , Xiaoqing Zheng , Jun He

In this paper, we propose to boost low-resource cross-lingual document retrieval performance with deep bilingual query-document representations. We match queries and documents in both source and target languages with four components, each…

Diffusion models excel at generating images conditioned on text prompts, but the resulting images often do not satisfy user-specific criteria measured by scalar rewards such as Aesthetic Scores. This alignment typically requires…

There are many existing retrieval and question answering datasets. However, most of them either focus on ranked list evaluation or single-candidate question answering. This divide makes it challenging to properly evaluate approaches…

信息检索 · 计算机科学 2020-08-13 Sebastian Hofstätter , Markus Zlabinger , Mete Sertkan , Michael Schröder , Allan Hanbury

Despite bilingual speakers frequently using mixed-language queries in web searches, Information Retrieval (IR) research on them remains scarce. To address this, we introduce MiLQ, Mixed-Language Query test set, the first public benchmark of…

信息检索 · 计算机科学 2025-10-21 Jonghwi Kim , Deokhyung Kang , Seonjeong Hwang , Yunsu Kim , Jungseul Ok , Gary Lee

In this paper we describe a mechanism to improve Information Retrieval (IR) on the web. The method is based on Formal Concepts Analysis (FCA) that it is makes semantical relations during the queries, and allows a reorganizing, in the shape…

信息检索 · 计算机科学 2010-03-09 Abderrahim El Qadi , Driss Aboutajedine , Yassine Ennouary

Search engines are the most commonly used type of tool for finding relevant information on the Internet. However, today's search engines are far from perfect. Typical search queries are short, often one or two words, and can be ambiguous…

信息检索 · 计算机科学 2014-07-24 Dilip K. Limbu , Andy M. Connor , Stephen G. MacDonell

Document Understanding is a foundational AI capability with broad applications, and Document Question Answering (DocQA) is a key evaluation task. Traditional methods convert the document into text for processing by Large Language Models…

计算与语言 · 计算机科学 2025-09-10 Xixi Wu , Yanchao Tan , Nan Hou , Ruiyang Zhang , Hong Cheng

Generative retrieval represents a novel approach to information retrieval. It uses an encoder-decoder architecture to directly produce relevant document identifiers (docids) for queries. While this method offers benefits, current approaches…

信息检索 · 计算机科学 2024-09-30 Yubao Tang , Ruqing Zhang , Jiafeng Guo , Maarten de Rijke , Wei Chen , Xueqi Cheng

Retrieval-based multimodal document QA aims to identify and integrate relevant information from visually rich documents with complex multimodal structures. While retrieval-augmented generation (RAG) has shown strong performance in…

Composed Image Retrieval (CIR) is a challenging image retrieval paradigm that enables to retrieve target images based on multimodal queries consisting of reference images and modification texts. Although substantial progress has been made…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Zhiwei Chen , Yupeng Hu , Zhiheng Fu , Zixu Li , Jiale Huang , Qinlei Huang , Yinwei Wei

Academic Search is a search task aimed to manage and retrieve scientific documents like journal articles and conference papers. Personalization in this context meets individual researchers' needs by leveraging, through user profiles, the…

信息检索 · 计算机科学 2025-07-21 Pranav Kasela , Gabriella Pasi , Raffaele Perego

There has been a surge of interest in harnessing the reasoning capabilities of Large Language Models (LLMs) to accelerate scientific discovery. While existing approaches rely on grounding the discovery process within the relevant…

A major challenge in multimodal learning is the presence of noise within individual modalities. This noise inherently affects the resulting multimodal representations, especially when these representations are obtained through explicit…

计算机视觉与模式识别 · 计算机科学 2025-08-25 Mohammad Zia Ur Rehman , Devraj Raghuvanshi , Umang Jain , Shubhi Bansal , Nagendra Kumar

Retrieval-augmented generation has achieved strong performance on knowledge-intensive tasks where query-document relevance can be identified through direct lexical or semantic matches. However, many real-world queries involve abstract…

Retrieval-augmented generation combined with reinforcement learning has shown promise for grounding large language models in trustworthy medical evidence. However, existing methods rely on exact-match binary rewards, which in clinical…

人工智能 · 计算机科学 2026-05-28 Yuwei Miao , Gen Li , Yunsheng Zeng , Xiandong Li , Yujin Wang , Siyu Chen , Luning Wang , Yunhao Qiao , Junfeng Wang , Jianwei Lv , Bo Yuan