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This paper investigates the optimal signal detection problem with a particular interest in large-scale multiple-input multiple-output (MIMO) systems. The problem is NP-hard and can be solved optimally by searching the shortest path on the…

Machine Learning · Computer Science 2022-03-22 Le He , Ke He , Lisheng Fan , Xianfu Lei , Arumugam Nallanathan , George K. Karagiannidis

Pattern set mining, which is the task of finding a good set of patterns instead of all patterns, is a fundamental problem in data mining. Many different definitions of what constitutes a good set have been proposed in recent years. In this…

Databases · Computer Science 2025-07-14 Maiju Karjalainen , Pauli Miettinen

Network management protocols often require timely and meaningful insight about per flow network traffic. This paper introduces Randomized Admission Policy (RAP) - a novel algorithm for the frequency and top-k estimation problems, which are…

Data Structures and Algorithms · Computer Science 2016-12-12 Ran Ben Basat , Gil Einziger , Roy Friedman , Yaron Kassner

Because researchers typically do not have the time or space to present more than a few evaluation metrics in any published study, it can be difficult to assess relative effectiveness of prior methods for unreported metrics when baselining a…

Information Retrieval · Computer Science 2018-02-02 Mucahid Kutlu , Vivek Khetan , Matthew Lease

In this work, we address the problem of cardinality estimation for similarity search in high-dimensional spaces. Our goal is to design a framework that is lightweight, easy to construct, and capable of providing accurate estimates with…

Databases · Computer Science 2026-04-07 Zhonghan Chen , Qintian Guo , Ruiyuan Zhang , Xiaofang Zhou

Mixed Hamming packings are considered: the maximal cardinality given a minimum codeword Hamming distance of mixed codes is addressed via mixed integer programming models. Adopting the concept of contact graph from classical continuous…

Discrete Mathematics · Computer Science 2023-10-04 Péter Naszvadi , Mátyás Koniorczyk

Finding nearest neighbors in high-dimensional spaces is a fundamental operation in many multimedia retrieval applications. Exact tree-based indexing approaches are known to suffer from the notorious curse of dimensionality for…

Databases · Computer Science 2021-02-16 Omid Jafari , Parth Nagarkar

Hashing has been widely researched to solve the large-scale approximate nearest neighbor search problem owing to its time and storage superiority. In recent years, a number of online hashing methods have emerged, which can update the hash…

Databases · Computer Science 2022-12-07 Wenzhe Jia , Yuan Cao , Junwei Liu , Jie Gui

Recommender systems and information retrieval platforms rely on ranking algorithms to present the most relevant items to users, thereby improving engagement and satisfaction. Assessing the quality of these rankings requires reliable…

Information Retrieval · Computer Science 2025-11-05 Tetiana Manzhos , Tetiana Ianevych , Olga Melnyk

Supervised artificial neural networks with the rapidity-mass matrix (RMM) inputs were studied using several Monte Carlo event samples for various pp collision processes. The study shows the usability of this approach for general event…

High Energy Physics - Phenomenology · Physics 2021-01-27 S. V. Chekanov

This paper proposes a novel ternary hash encoding for learning to hash methods, which provides a principled more efficient coding scheme with performances better than those of the state-of-the-art binary hashing counterparts. Two kinds of…

Artificial Intelligence · Computer Science 2021-03-22 Chang Liu , Lixin Fan , Kam Woh Ng , Yilun Jin , Ce Ju , Tianyu Zhang , Chee Seng Chan , Qiang Yang

Reliable yet efficient evaluation of generalisation performance of a proposed architecture is crucial to the success of neural architecture search (NAS). Traditional approaches face a variety of limitations: training each architecture to…

Machine Learning · Statistics 2021-06-09 Binxin Ru , Clare Lyle , Lisa Schut , Miroslav Fil , Mark van der Wilk , Yarin Gal

Recent advancements in Large Language Models have transformed ML/AI development, necessitating a reevaluation of AutoML principles for the Retrieval-Augmented Generation (RAG) systems. To address the challenges of hyper-parameter…

Computation and Language · Computer Science 2024-06-28 Jia Fu , Xiaoting Qin , Fangkai Yang , Lu Wang , Jue Zhang , Qingwei Lin , Yubo Chen , Dongmei Zhang , Saravan Rajmohan , Qi Zhang

Pre-processing whole slide images (WSIs) can impact classification performance. Our study shows that using fixed hyper-parameters for pre-processing out-of-domain WSIs can significantly degrade performance. Therefore, it is critical to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Jun Wang , Yu Mao , Yufei Cui , Nan Guan , Chun Jason Xue

The cleanest way to discover a new particle is generally the "bump-hunt" methodology: looking for a localised excess in a mass (or related) distribution. However, if the mass of the particle being discovered is not known the procedure of…

High Energy Physics - Phenomenology · Physics 2025-06-03 William Murray , Matt O'Neill , Finn O'Gara

Embedding image features into a binary Hamming space can improve both the speed and accuracy of large-scale query-by-example image retrieval systems. Supervised hashing aims to map the original features to compact binary codes in a manner…

Machine Learning · Computer Science 2016-11-17 Guosheng Lin , Chunhua Shen , Anton van den Hengel

In this paper we present an efficient method for visual descriptors retrieval based on compact hash codes computed using a multiple k-means assignment. The method has been applied to the problem of approximate nearest neighbor (ANN) search…

Computer Vision and Pattern Recognition · Computer Science 2016-05-11 Simone Ercoli , Marco Bertini , Alberto Del Bimbo

The programming paradigm Map-Reduce and its main open-source implementation, Hadoop, have had an enormous impact on large scale data processing. Our goal in this expository writeup is two-fold: first, we want to present some complexity…

Distributed, Parallel, and Cluster Computing · Computer Science 2012-11-29 Ashish Goel , Kamesh Munagala

The approximate nearest neighbor (ANN) search problem is fundamental to efficiently serving many real-world machine learning applications. A number of techniques have been developed for ANN search that are efficient, accurate, and scalable.…

Machine Learning · Computer Science 2023-02-23 Philip Sun , Ruiqi Guo , Sanjiv Kumar

Approximate Nearest neighbor search (ANNS) is fundamental and essential operation in applications from many domains, such as databases, machine learning, multimedia, and computer vision. Although many algorithms have been continuously…

Databases · Computer Science 2016-10-11 Wen Li , Ying Zhang , Yifang Sun , Wei Wang , Wenjie Zhang , Xuemin Lin