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While generative recommendations (GR) possess strong sequential reasoning capabilities, they face significant challenges when processing extremely long user behavior sequences: the high computational cost forces practical sequence lengths…

Information Retrieval · Computer Science 2026-02-17 Yu Zhou , Chengcheng Guo , Kuo Cai , Ji Liu , Qiang Luo , Ruiming Tang , Han Li , Kun Gai , Guorui Zhou

There is an increasing demand for extending existing DBMSs with vector indices so that they become unified systems capable of supporting modern predictive applications, which require joint querying of vector embeddings together with the…

Information Retrieval · Computer Science 2025-07-01 Gaurav Sehgal , Semih Salihoglu

Search engine has become a fundamental component in various web and mobile applications. Retrieving relevant documents from the massive datasets is challenging for a search engine system, especially when faced with verbose or tail queries.…

Information Retrieval · Computer Science 2020-08-11 Kuan Fang , Long Zhao , Zhan Shen , RuiXing Wang , RiKang Zhour , LiWen Fan

While generative modeling has become prevalent across numerous research fields, its integration into the realm of image retrieval remains largely unexplored and underjustified. In this paper, we present a novel methodology, reframing image…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Yidan Zhang , Ting Zhang , Dong Chen , Yujing Wang , Qi Chen , Xing Xie , Hao Sun , Weiwei Deng , Qi Zhang , Fan Yang , Mao Yang , Qingmin Liao , Jingdong Wang , Baining Guo

Graph-RAG constructs a knowledge graph from text chunks to improve retrieval in Large Language Model (LLM)-based question answering. It is particularly useful in domains such as biomedicine, law, and political science, where retrieval often…

Information Retrieval · Computer Science 2025-06-04 Yiqian Huang , Shiqi Zhang , Xiaokui Xiao

Self-supervised depth estimation has shown its great effectiveness in producing high quality depth maps given only image sequences as input. However, its performance usually drops when estimating on border areas or objects with thin…

Computer Vision and Pattern Recognition · Computer Science 2020-12-16 Rui Li , Qing Mao , Pei Wang , Xiantuo He , Yu Zhu , Jinqiu Sun , Yanning Zhang

Neural IR has advanced through two distinct paths: entity-oriented approaches leveraging knowledge graphs and multi-vector models capturing fine-grained semantics. We introduce QDER, a neural re-ranking model that unifies these approaches…

Information Retrieval · Computer Science 2025-10-14 Shubham Chatterjee , Jeff Dalton

Many early neural Information Retrieval (NeurIR) methods are re-rankers that rely on a traditional first-stage retriever due to expensive query time computations. Recently, representation-based retrievers have gained much attention, which…

Information Retrieval · Computer Science 2023-11-28 Sibo Dong , Justin Goldstein , Grace Hui Yang

Embedding-based dense retrieval has become the cornerstone of many critical applications, where approximate nearest neighbor search (ANNS) queries are often combined with filters on labels such as dates and price ranges. Graph-based indexes…

Databases · Computer Science 2026-01-13 Yicheng Jin , Yongji Wu , Wenjun Hu , Bruce M. Maggs , Jun Yang , Xiao Zhang , Danyang Zhuo

Traditional sparse and dense retrieval methods struggle to leverage general world knowledge and often fail to capture the nuanced features of queries and products. With the advent of large language models (LLMs), industrial search systems…

Information Retrieval · Computer Science 2025-07-14 Ming Pang , Chunyuan Yuan , Xiaoyu He , Zheng Fang , Donghao Xie , Fanyi Qu , Xue Jiang , Changping Peng , Zhangang Lin , Ching Law , Jingping Shao

The computation of distance measures between nodes in graphs is inefficient and does not scale to large graphs. We explore dense vector representations as an effective way to approximate the same information: we introduce a simple yet…

Computation and Language · Computer Science 2019-06-18 Andrey Kutuzov , Mohammad Dorgham , Oleksiy Oliynyk , Chris Biemann , Alexander Panchenko

In this paper, we present GEM as a General Evaluation benchmark for Multimodal tasks. Different from existing datasets such as GLUE, SuperGLUE, XGLUE and XTREME that mainly focus on natural language tasks, GEM is a large-scale…

Computation and Language · Computer Science 2021-06-21 Lin Su , Nan Duan , Edward Cui , Lei Ji , Chenfei Wu , Huaishao Luo , Yongfei Liu , Ming Zhong , Taroon Bharti , Arun Sacheti

Item indexing, which maps a large corpus of items into compact discrete representations, is critical for both discriminative and generative recommender systems, yet existing Vector Quantization (VQ)-based approaches struggle with the highly…

Information Retrieval · Computer Science 2026-01-29 Jing Yan , Yimeng Bai , Zongyu Liu , Yahui Liu , Junwei Wang , Jingze Huang , Haoda Li , Sihao Ding , Shaohui Ruan , Yang Zhang

Embedding models can generate high-dimensional vectors whose similarity reflects semantic affinities. Thus, accurately and timely retrieving those vectors in a large collection that are similar to a given query has become a critical…

Information Retrieval · Computer Science 2024-10-31 Mariano Tepper , Ishwar Singh Bhati , Cecilia Aguerrebere , Ted Willke

Embedding-based vector search underpins many important applications, such as recommendation and retrieval-augmented generation (RAG). It relies on vector indices to enable efficient search. However, these indices require storing…

Multimodal Large Language Models (MLLMs) have shown remarkable success in comprehension tasks such as visual description and visual question answering. However, their direct application to embedding-based tasks like retrieval remains…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Lihao Liu , Yan Wang , Biao Yang , Da Li , Jiangxia Cao , Yuxiao Luo , Xiang Chen , Xiangyu Wu , Wei Yuan , Fan Yang , Guiguang Ding , Tingting Gao , Guorui Zhou

In recent years, the dominant accuracy metric for vector search is the recall of a result list of fixed size (top-k retrieval), considering as ground truth the exact vector retrieval results. Although convenient to compute, this metric is…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Gergely Szilvasy , Pierre-Emmanuel Mazaré , Matthijs Douze

Retrieval-augmented generation improves large language models by grounding outputs in external knowledge sources, reducing hallucinations and addressing knowledge cutoffs. However, standard embedding-based retrieval fails to capture the…

Information Retrieval · Computer Science 2025-12-23 Markus Ekvall , Ludvig Bergenstråhle , Patrick Truong , Ben Murrell , Joakim Lundeberg

LLM pre-training efficacy increasingly depends on data composition rather than sheer volume. Yet, optimal mixing is hindered by categorization flaws: human taxonomies suffer from ontological misalignment, and Euclidean clustering fails to…

Machine Learning · Computer Science 2026-05-27 Yue Min , Ziyun Qiao , Ruining Chen , Yujun Li

Node classifiers are required to comprehensively reduce prediction errors, training resources, and inference latency in the industry. However, most graph neural networks (GNN) concentrate only on one or two of them. The compromised aspects…

Machine Learning · Computer Science 2023-06-01 Yi Luo , Guangchun Luo , Ke Qin , Aiguo Chen