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Data mixing methods play a crucial role in semi-supervised learning (SSL), but their application is unexplored in long-tailed semi-supervised learning (LTSSL). The primary reason is that the in-batch mixing manner fails to address class…

计算机视觉与模式识别 · 计算机科学 2024-04-02 Hongwei Zheng , Linyuan Zhou , Han Li , Jinming Su , Xiaoming Wei , Xiaoming Xu

Multimodal search has become increasingly important in providing users with a natural and effective way to ex-press their search intentions. Images offer fine-grained details of the desired products, while text allows for easily…

计算机视觉与模式识别 · 计算机科学 2024-04-25 Oriol Barbany , Michael Huang , Xinliang Zhu , Arnab Dhua

Large Language Model (LLM)-based search agents have shown remarkable capabilities in solving complex tasks by dynamically decomposing problems and addressing them through interleaved reasoning and retrieval. However, this interleaved…

人工智能 · 计算机科学 2025-05-20 Tiannuo Yang , Zebin Yao , Bowen Jin , Lixiao Cui , Yusen Li , Gang Wang , Xiaoguang Liu

This paper addresses the challenge of improving information retrieval from semi-structured eXtensible Markup Language (XML) documents. Traditional information retrieval systems (IRS) often overlook user-specific needs and return identical…

信息检索 · 计算机科学 2026-03-24 Ounnaci Iddir , Ahmed-ouamer Rachid , Tai Dinh

The BRIGHT benchmark is a dataset consisting of reasoning-intensive queries over diverse domains. We explore retrieval results on BRIGHT using a range of retrieval techniques, including sparse, dense, and fusion methods, and establish…

信息检索 · 计算机科学 2025-09-03 Yijun Ge , Sahel Sharifymoghaddam , Jimmy Lin

Dense retrieval calls for discriminative embeddings to represent the semantic relationship between query and document. It may benefit from the using of large language models (LLMs), given LLMs' strong capability on semantic understanding.…

计算与语言 · 计算机科学 2025-11-25 Zheng Liu , Chaofan Li , Shitao Xiao , Yingxia Shao , Defu Lian

As data retrieval demands become increasingly complex, traditional search methods often fall short in addressing nuanced and conceptual queries. Vector similarity search has emerged as a promising technique for finding semantically similar…

人工智能 · 计算机科学 2024-12-31 Md Riyadh , Muqi Li , Felix Haryanto Lie , Jia Long Loh , Haotian Mi , Sayam Bohra

The key challenge in semantic search is to create models that are both accurate and efficient in pinpointing relevant sentences for queries. While BERT-style bi-encoders excel in efficiency with pre-computed embeddings, they often miss…

计算与语言 · 计算机科学 2024-06-26 Zihan Liao , Hang Yu , Jianguo Li , Jun Wang , Wei Zhang

Querying over XML elements using keyword search is steadily gaining popularity. The traditional similarity measure is widely employed in order to effectively retrieve various XML documents. A number of authors have already proposed…

信息检索 · 计算机科学 2010-12-20 Yang Wang , Zhikui Chen , Xiaodi Huang

Retrieval-augmented generation (RAG) is a common way to ground language models in external documents and up-to-date information. Classical retrieval systems relied on lexical methods such as BM25, which rank documents by term overlap with…

计算与语言 · 计算机科学 2026-03-05 Martin Asenov , Kenza Benkirane , Dan Goldwater , Aneiss Ghodsi

Semantic caching enhances the efficiency of large language model (LLM) systems by identifying semantically similar queries, storing responses once, and serving them for subsequent equivalent requests. However, existing semantic caching…

机器学习 · 计算机科学 2025-07-10 Shervin Ghaffari , Zohre Bahranifard , Mohammad Akbari

This paper addresses the limitations of traditional keyword-based search in understanding user intent and introduces a novel hybrid search approach that leverages the strengths of non-semantic search engines, Large Language Models (LLMs),…

信息检索 · 计算机科学 2024-09-09 Aman Ahluwalia , Bishwajit Sutradhar , Karishma Ghosh , Indrapal Yadav , Arpan Sheetal , Prashant Patil

Deep research agents have emerged as powerful systems for addressing complex queries. Meanwhile, LLM-based retrievers have demonstrated strong capability in following instructions or reasoning. This raises a critical question: can LLM-based…

信息检索 · 计算机科学 2026-02-09 Tiansheng Hu , Yilun Zhao , Canyu Zhang , Arman Cohan , Chen Zhao

Augmenting Large Language Models (LLMs) with retrieved external knowledge has proven effective for improving the factual accuracy of generated responses. Despite their success, retrieval-augmented LLMs still face the distractibility issue,…

计算与语言 · 计算机科学 2025-02-18 Zexuan Qiu , Zijing Ou , Bin Wu , Jingjing Li , Aiwei Liu , Irwin King

Existing retrieval benchmarks primarily consist of text-based queries where keyword or semantic matching is usually sufficient. Many real-world queries contain multimodal elements, particularly, images such as diagrams, charts, and…

Text embedding methods have become increasingly popular in both industrial and academic fields due to their critical role in a variety of natural language processing tasks. The significance of universal text embeddings has been further…

信息检索 · 计算机科学 2024-06-21 Hongliu Cao

Although large language models (LLMs) have demonstrated their strong intelligence ability, the high demand for computation and storage hinders their practical application. To this end, many model compression techniques are proposed to…

计算与语言 · 计算机科学 2024-11-01 Ge Yang , Changyi He , Jinyang Guo , Jianyu Wu , Yifu Ding , Aishan Liu , Haotong Qin , Pengliang Ji , Xianglong Liu

With the advent of large language models (LLMs), it has become common practice for users to draft text and utilize LLMs to enhance its quality through paraphrasing. However, this process can sometimes result in the loss or distortion of the…

计算与语言 · 计算机科学 2026-01-26 Hoang-Quoc Nguyen-Son , Minh-Son Dao , Koji Zettsu

Pretrained language models (PLMs) have become remarkably adept at task and language generalization. Nonetheless, they often fail when faced with unseen languages. In this work, we present LinguAlchemy, a regularization method that…

This paper presents CLEAR, a retrieval model that seeks to complement classical lexical exact-match models such as BM25 with semantic matching signals from a neural embedding matching model. CLEAR explicitly trains the neural embedding to…

信息检索 · 计算机科学 2021-03-30 Luyu Gao , Zhuyun Dai , Tongfei Chen , Zhen Fan , Benjamin Van Durme , Jamie Callan