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Efficiently word storing and searching is an important task in computer science. An application space complexity, time complexity, and overall performance depend on this string data. Many word searching data structures and algorithms exist…

数据结构与算法 · 计算机科学 2019-11-06 Rahat Yeasin Emon , Sharmistha Chanda Tista

Recent works have demonstrated the effectiveness of retrieval augmentation in the Event Argument Extraction (EAE) task. However, existing retrieval-based EAE methods have two main limitations: (1) input length constraints and (2) the gap…

计算与语言 · 计算机科学 2024-09-17 Wanlong Liu , Enqi Zhang , Li Zhou , Dingyi Zeng , Shaohuan Cheng , Chen Zhang , Malu Zhang , Wenyu Chen

The information retrieval community has made significant progress in improving the efficiency of Dual Encoder (DE) dense passage retrieval systems, making them suitable for latency-sensitive settings. However, many proposed procedures are…

信息检索 · 计算机科学 2023-06-21 Yuxuan Wang , Hong Lyu

Recently, several dense retrieval (DR) models have demonstrated competitive performance to term-based retrieval that are ubiquitous in search systems. In contrast to term-based matching, DR projects queries and documents into a dense vector…

信息检索 · 计算机科学 2022-06-28 Sebastian Hofstätter , Nick Craswell , Bhaskar Mitra , Hamed Zamani , Allan Hanbury

Visual Question Answering (VQA) has attracted much attention since it offers insight into the relationships between the multi-modal analysis of images and natural language. Most of the current algorithms are incapable of answering…

计算机视觉与模式识别 · 计算机科学 2017-12-05 Guohao Li , Hang Su , Wenwu Zhu

Sorting and binary searching a dense array can be considered the simplest and most space efficient form of indexing. This holds especially on GPUs as they exhibit exceptional sorting performance. However, the popular opinion is that such a…

数据库 · 计算机科学 2026-02-24 Justus Henneberg , Felix Schuhknecht

Conversational dense retrieval has shown to be effective in conversational search. However, a major limitation of conversational dense retrieval is their lack of interpretability, hindering intuitive understanding of model behaviors for…

信息检索 · 计算机科学 2024-06-04 Yiruo Cheng , Kelong Mao , Zhicheng Dou

Open-domain Question Answering models which directly leverage question-answer (QA) pairs, such as closed-book QA (CBQA) models and QA-pair retrievers, show promise in terms of speed and memory compared to conventional models which retrieve…

Designing an embedding retrieval system requires navigating a complex design space of conflicting trade-offs between efficiency and effectiveness. This work structures these decisions as a vertical traversal of the system design stack. We…

信息检索 · 计算机科学 2026-01-29 Deep Shah , Sanket Badhe , Nehal Kathrotia

Despite the advantages of their low-resource settings, traditional sparse retrievers depend on exact matching approaches between high-dimensional bag-of-words (BoW) representations of both the queries and the collection. As a result,…

信息检索 · 计算机科学 2022-08-11 Dahlia Shehata , Negar Arabzadeh , Charles L. A. Clarke

Inverted indexes are vital in providing fast key-word-based search. For every term in the document collection, a list of identifiers of documents in which the term appears is stored, along with auxiliary information such as term frequency,…

信息检索 · 计算机科学 2019-01-30 Harrie Oosterhuis , J. Shane Culpepper , Maarten de Rijke

Scaling up neural models has yielded significant advancements in a wide array of tasks, particularly in language generation. Previous studies have found that the performance of neural models frequently adheres to predictable scaling laws,…

信息检索 · 计算机科学 2024-07-16 Yan Fang , Jingtao Zhan , Qingyao Ai , Jiaxin Mao , Weihang Su , Jia Chen , Yiqun Liu

Dense retrieval has become the industry standard in large-scale information retrieval systems due to its high efficiency and competitive accuracy. Its core relies on a coarse-to-fine hierarchical architecture that enables rapid candidate…

信息检索 · 计算机科学 2025-12-16 Huimu Wang , Yiming Qiu , Xingzhi Yao , Zhiguo Chen , Guoyu Tang , Songlin Wang , Sulong Xu , Mingming Li

We study retrieval design for code-focused generation tasks under realistic compute budgets. Using two complementary tasks from Long Code Arena -- code completion and bug localization -- we systematically compare retrieval configurations…

机器学习 · 计算机科学 2025-10-24 Timur Galimzyanov , Olga Kolomyttseva , Egor Bogomolov

Dense retrieval compresses texts into single embeddings ranked by cosine similarity. While efficient for recall, this interface is brittle for identity-level matching: minimal compositional edits (negation, role swaps) flip meaning yet…

信息检索 · 计算机科学 2026-04-21 Radoslav Ralev , Aditeya Baral , Iliya Zhechev , Jen Agarwal , Srijith Rajamohan

Typical large-scale recommender systems use deep learning models that are stored on a large amount of DRAM. These models often rely on embeddings, which consume most of the required memory. We present Bandana, a storage system that reduces…

A fundamental roadblock to the exact numerical solution of many-fermion problems is the exponential growth of the Hilbert space with system size. It manifests as extreme dynamical memory and computation-time requirements for simulating…

强关联电子 · 物理学 2023-09-01 Prabhakar , Anamitra Mukherjee

Recent studies have shown that Dense Retrieval (DR) techniques can significantly improve the performance of first-stage retrieval in IR systems. Despite its empirical effectiveness, the application of DR is still limited. In contrast to…

信息检索 · 计算机科学 2023-04-27 Haitao Li , Qingyao Ai , Jingtao Zhan , Jiaxin Mao , Yiqun Liu , Zheng Liu , Zhao Cao

Catastrophic forgetting can be trivially alleviated by keeping all data from previous tasks in memory. Therefore, minimizing the memory footprint while maximizing the amount of relevant information is crucial to the challenge of continual…

机器学习 · 计算机科学 2025-06-25 Christiaan Lamers , Ahmed Nabil Belbachir , Thomas Bäck , Niki van Stein

Dense retrieval systems increasingly need to handle complex queries. In many realistic settings, users express intent through long instructions or task-specific descriptions, while target documents remain relatively simple and static. This…

信息检索 · 计算机科学 2026-04-07 Seiji Maekawa , Moin Aminnaseri , Pouya Pezeshkpour , Estevam Hruschka
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