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Wide-parameter-space searches for continuous gravitational waves using semi-coherent matched-filter methods require enormous computing power, which limits their achievable sensitivity. Here we explore an alternative search method based on…

General Relativity and Quantum Cosmology · Physics 2026-01-22 Prasanna. M. Joshi , Reinhard Prix

Beam search is a go-to strategy for decoding neural sequence models. The algorithm can naturally be viewed as a subset optimization problem, albeit one where the corresponding set function does not reflect interactions between candidates.…

Computation and Language · Computer Science 2023-06-26 Clara Meister , Martina Forster , Ryan Cotterell

We propose a quantization based approach for fast approximate Maximum Inner Product Search (MIPS). Each database vector is quantized in multiple subspaces via a set of codebooks, learned directly by minimizing the inner product quantization…

Artificial Intelligence · Computer Science 2015-09-07 Ruiqi Guo , Sanjiv Kumar , Krzysztof Choromanski , David Simcha

We present a new scientific document similarity model based on matching fine-grained aspects of texts. To train our model, we exploit a naturally-occurring source of supervision: sentences in the full-text of papers that cite multiple…

Computation and Language · Computer Science 2022-05-05 Sheshera Mysore , Arman Cohan , Tom Hope

Vector Similarity Search (VSS) in high-dimensional spaces is rapidly emerging as core functionality in next-generation database systems for numerous data-intensive services -- from embedding lookups in large language models (LLMs), to…

Information Retrieval · Computer Science 2026-01-01 Tingyang Chen , Cong Fu , Jiahua Wu , Haotian Wu , Hua Fan , Xiangyu Ke , Yunjun Gao , Yabo Ni , Anxiang Zeng

Large Language Models cannot reliably acquire new knowledge post-deployment -- even when relevant text resources exist, models fail to transform them into actionable knowledge without retraining. Retrieval-Augmented Generation attempts to…

Neural and Evolutionary Computing · Computer Science 2026-02-19 Qi Sun , Stefan Nielsen , Rio Yokota , Yujin Tang

Dense vector retrieval is an important building block of modern machine learning systems, underlying applications ranging from semantic search to retrieval-augmented generation and knowledge-intensive reasoning. Beyond retrieving items that…

Information Retrieval · Computer Science 2026-05-25 Hang Gao , Dong Deng , Yongfeng Zhang

Many real world problems require fast and efficient lexical comparison of large numbers of short text strings. Search personalization is one such domain. We introduce the use of feature bit vectors using the hashing trick for improving…

Information Retrieval · Computer Science 2019-10-22 Braddock Gaskill

Hybrid queries, which combine vector nearest neighbor searches with scalar predicates, represent a fundamental challenge in managing vector databases. Existing methods often restrict the number of vector columns involved or the complexity…

Databases · Computer Science 2026-04-28 Ermu Qiu , Tianyi Chen , Jun Gao , Xing Wei , Yaofeng Tu , Yinjun Han , Yang Lin

Vector similarity search has become a critical component in AI-driven applications such as large language models (LLMs). To achieve high recall and low latency, GPUs are utilized to exploit massive parallelism for faster query processing.…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-12-03 Yi Liu , Chen Qian

Scaling Approximate Nearest Neighbor Search (ANNS) to billions of vectors requires distributed indexes that balance accuracy, latency, and throughput. Yet existing index designs struggle with this tradeoff. This paper presents SPIRE, a…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-12-22 Yuming Xu , Qianxi Zhang , Qi Chen , Baotong Lu , Menghao Li , Philip Adams , Mingqin Li , Zengzhong Li , Jing Liu , Cheng Li , Fan Yang

This paper presents a hybrid system for intuitive item similarity search that combines a Large Language Model (LLM) with a custom K-Nearest Neighbors (KNN) algorithm. Unlike black-box dense vector systems, this architecture provides…

Information Retrieval · Computer Science 2025-09-29 Ana Rodrigues , João Mata , Rui Rego

Given a hybrid dataset where every data object consists of a vector and an attribute value, for each query with a target vector and a range filter, range-filtering approximate nearest neighbor search (RFANNS) aims to retrieve the most…

Databases · Computer Science 2025-09-29 Ziqi Wang , Jingzhe Zhang , Wei Hu

As high-dimensional vector data increasingly surpasses the processing capabilities of traditional database management systems, Vector Databases (VDBs) have emerged and become tightly integrated with large language models, being widely…

Minimizing data-to-analysis time while enabling real-time interaction and efficient analytical computations on large datasets are fundamental objectives of contemporary exploratory systems. Although some of the recent adaptive indexing and…

Databases · Computer Science 2025-05-27 Stavros Maroulis , Nikos Bikakis , Vassilis Stamatopoulos , George Papastefanatos

Virtual screening (VS) is an essential technique for understanding biomolecular interactions, particularly, drug design and discovery. The best-performing VS models depend vitally on three-dimensional (3D) structures, which are not…

Biomolecules · Quantitative Biology 2022-12-29 Li Shen , Hongsong Feng , Yuchi Qiu , Guo-Wei Wei

Test-time compute scaling has emerged as a new axis along which to improve model accuracy, where additional computation is used at inference time to allow the model to think longer for more challenging problems. One promising approach for…

Finding semantically rich and computer-understandable representations for textual dialogues, utterances and words is crucial for dialogue systems (or conversational agents), as their performance mostly depends on understanding the context…

Computation and Language · Computer Science 2017-10-23 Alexander Bartl , Gerasimos Spanakis

We present a system for performing visual search over billions of aerial and satellite images. The purpose of visual search is to find images that are visually similar to a query image. We define visual similarity using 512 abstract visual…

Computer Vision and Pattern Recognition · Computer Science 2020-02-10 Ryan Keisler , Samuel W. Skillman , Sunny Gonnabathula , Justin Poehnelt , Xander Rudelis , Michael S. Warren

Approximate nearest neighbor (ANN) search is a performance-critical component of many machine learning pipelines. Rigorous benchmarking is essential for evaluating the performance of vector indexes for ANN search. However, the datasets of…

Machine Learning · Computer Science 2025-05-26 Elias Jääsaari , Ville Hyvönen , Matteo Ceccarello , Teemu Roos , Martin Aumüller