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Cross-modal hashing, favored for its effectiveness and efficiency, has received wide attention to facilitating efficient retrieval across different modalities. Nevertheless, most existing methods do not sufficiently exploit the…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Xin Liu , Xingzhi Wang , Yiu-ming Cheung

We present ElasticHash, a novel approach for high-quality, efficient, and large-scale semantic image similarity search. It is based on a deep hashing model to learn hash codes for fine-grained image similarity search in natural images and a…

Computer Vision and Pattern Recognition · Computer Science 2023-05-10 Nikolaus Korfhage , Markus Mühling , Bernd Freisleben

Representing images by compact hash codes is an attractive approach for large-scale content-based image retrieval. In most state-of-the-art hashing-based image retrieval systems, for each image, local descriptors are first aggregated as a…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Thanh-Toan Do , Khoa Le , Tuan Hoang , Huu Le , Tam V. Nguyen , Ngai-Man Cheung

Retrieval-augmented generation (RAG) improves the reliability of large language model (LLM) answers by integrating external knowledge. However, RAG increases the end-to-end inference time since looking for relevant documents from large…

In computer interfaces in general, especially in information retrieval tasks, it is important to be able to quickly find and retrieve information. State of the art approach, used, for example, in search engines, is not effective as it…

Information Retrieval · Computer Science 2015-02-20 Dmytro Filatov , Taras Filatov

Due to its fast retrieval and storage efficiency capabilities, hashing has been widely used in nearest neighbor retrieval tasks. By using deep learning based techniques, hashing can outperform non-learning based hashing technique in many…

Computer Vision and Pattern Recognition · Computer Science 2019-06-04 Zhan Yang , Osolo Ian Raymond , WuQing Sun , Jun Long

Diversification is a useful tool for exploring large collections of information items. It has been used to reduce redundancy and cover multiple perspectives in information-search settings. Diversification finds applications in many…

Data Structures and Algorithms · Computer Science 2026-02-05 Honglian Wang , Sijing Tu , Aristides Gionis

In this paper a high speed neural network classifier based on extreme learning machines for multi-label classification problem is proposed and dis-cussed. Multi-label classification is a superset of traditional binary and multi-class…

Machine Learning · Computer Science 2016-09-06 Meng Joo Er , Rajasekar Venkatesan , Ning Wang

The accuracy of deep neural networks is significantly influenced by the effectiveness of mini-batch construction during training. In single-label scenarios, such as binary and multi-class classification tasks, it has been demonstrated that…

Machine Learning · Computer Science 2024-12-24 Ao Zhou , Bin Liu , Jin Wang , Grigorios Tsoumakas

Hashing has proven a valuable tool for large-scale information retrieval. Despite much success, existing hashing methods optimize over simple objectives such as the reconstruction error or graph Laplacian related loss functions, instead of…

Machine Learning · Computer Science 2014-07-07 Guosheng Lin , Chunhua Shen , Jianxin Wu

Lowering the numerical precision of model parameters and computations is widely adopted to improve the efficiency of retrieval systems. However, when computing relevance scores between the query and documents in low-precision, we observe…

Information Retrieval · Computer Science 2026-04-14 Kisu Yang , Yoonna Jang , Hwanseok Jang , Kenneth Choi , Isabelle Augenstein , Heuiseok Lim

Label information is widely used in hashing methods because of its effectiveness of improving the precision. The existing hashing methods always use two different projections to represent the mutual regression between hash codes and class…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Xingbo Liu , Xiushan Nie , Yilong Yin

Hashing has recently sparked a great revolution in cross-modal retrieval because of its low storage cost and high query speed. Recent cross-modal hashing methods often learn unified or equal-length hash codes to represent the multi-modal…

Computer Vision and Pattern Recognition · Computer Science 2019-09-13 Xin Liu , Zhikai Hu , Haibin Ling , Yiu-ming Cheung

Machine learning methods have achieved good performance and been widely applied in various real-world applications. They can learn the model adaptively and be better fit for special requirements of different tasks. Generally, a good machine…

Computer Vision and Pattern Recognition · Computer Science 2019-05-21 Zhiqiang Gong , Ping Zhong , Weidong Hu

Semantic hashing represents documents as compact binary vectors (hash codes) and allows both efficient and effective similarity search in large-scale information retrieval. The state of the art has primarily focused on learning hash codes…

Information Retrieval · Computer Science 2021-03-29 Christian Hansen , Casper Hansen , Jakob Grue Simonsen , Stephen Alstrup , Christina Lioma

Nearest Neighbor Search (NNS) is a fundamental problem in data structures with wide-ranging applications, such as web search, recommendation systems, and, more recently, retrieval-augmented generations (RAG). In such recent applications, in…

Data Structures and Algorithms · Computer Science 2026-02-10 Siddharth Barman , Nirjhar Das , Shivam Gupta , Kirankumar Shiragur

Differentiable Search Indexing (DSI) is a recent paradigm for information retrieval which uses a transformer-based neural network architecture as the document index to simplify the retrieval process. A differentiable index has many…

Information Retrieval · Computer Science 2025-02-06 Abhijeet Phatak , Jayant Sachdev , Sean D Rosario , Swati Kirti , Chittaranjan Tripathy

Supervised cross-modal hashing aims to embed the semantic correlations of heterogeneous modality data into the binary hash codes with discriminative semantic labels. Because of its advantages on retrieval and storage efficiency, it is…

Information Retrieval · Computer Science 2022-03-22 Fengling Li , Tong Wang , Lei Zhu , Zheng Zhang , Xinhua Wang

Due to its effectivity and efficiency, deep hashing approaches are widely used for large-scale visual search. However, it is still challenging to produce compact and discriminative hash codes for images associated with multiple semantics…

Computer Vision and Pattern Recognition · Computer Science 2021-07-26 Zhengyang Yu , Song Wu , Zhihao Dou , Erwin M. Bakker

Multilingual dense retrieval aims to retrieve relevant documents across different languages based on a unified retriever model. The challenge lies in aligning representations of different languages in a shared vector space. The common…

Information Retrieval · Computer Science 2025-09-12 Chao Huang , Fengran Mo , Yufeng Chen , Changhao Guan , Zhenrui Yue , Xinyu Wang , Jinan Xu , Kaiyu Huang