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Recently, locality sensitive hashing (LSH) was shown to be effective for MIPS and several algorithms including $L_2$-ALSH, Sign-ALSH and Simple-LSH have been proposed. In this paper, we introduce the norm-range partition technique, which…

机器学习 · 计算机科学 2018-11-06 Xiao Yan , Xinyan Dai , Jie Liu , Kaiwen Zhou , James Cheng

Local Differential Privacy (LDP) is now widely adopted in large-scale systems to collect and analyze sensitive data while preserving users' privacy. However, almost all LDP protocols rely on a semi-trust model where users are…

密码学与安全 · 计算机科学 2023-03-21 Rong Du , Qingqing Ye , Yue Fu , Haibo Hu , Jin Li , Chengfang Fang , Jie Shi

We study infinite-horizon average-reward Markov decision processes (AMDPs) in the context of general function approximation. Specifically, we propose a novel algorithmic framework named Local-fitted Optimization with OPtimism (LOOP), which…

机器学习 · 计算机科学 2024-04-22 Jianliang He , Han Zhong , Zhuoran Yang

The detection of sequential patterns in data is a basic functionality of modern data processing systems for complex event processing (CEP), OLAP, and retrieval-augmented generation (RAG). In practice, pattern matching is challenging, since…

数据库 · 计算机科学 2025-11-07 Cong Yu , Tuo Shi , Matthias Weidlich , Bo Zhao

MAP is the problem of finding a most probable instantiation of a set of variables in a Bayesian network, given evidence. Unlike computing marginals, posteriors, and MPE (a special case of MAP), the time and space complexity of MAP is not…

人工智能 · 计算机科学 2013-01-14 James D. Park , Adnan Darwiche

Hashing technology has been widely used in image retrieval due to its computational and storage efficiency. Recently, deep unsupervised hashing methods have attracted increasing attention due to the high cost of human annotations in the…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Qinghong Lin , Xiaojun Chen , Qin Zhang , Shangxuan Tian , Yudong Chen

It is a common paradigm in object detection frameworks to treat all samples equally and target at maximizing the performance on average. In this work, we revisit this paradigm through a careful study on how different samples contribute to…

计算机视觉与模式识别 · 计算机科学 2019-09-17 Yuhang Cao , Kai Chen , Chen Change Loy , Dahua Lin

In image based feature descriptor design, local information from image patches are extracted using iterative scanning operations which cause high computational costs. In order to avoid such scanning operations, we present matrix…

计算机视觉与模式识别 · 计算机科学 2021-02-09 Zainab Alhakeem , Se-In Jang

The performance of Large Language Models (LLMs) is increasingly governed by data efficiency rather than raw scaling volume. However, existing selection methods often decouple global distribution balancing from local instance selection,…

计算与语言 · 计算机科学 2026-03-03 Changhao Wang , Jiaolong Yang , Xinhao Yao , Yunfei Yu , Peng Jiao , Lu Yu , Junpeng Fang , Riccardo Cantoro , Qing Cui , Jun Zhou

The global averaged civilian positioning accuracy is still at meter level for all existing Global Navigation Satellite Systems (GNSSs), and the performance is even worse in urban areas. At lower altitudes than satellites, high altitude…

信号处理 · 电气工程与系统科学 2023-01-03 Hongzhao Zheng , Mohamed Atia , Halim Yanikomeroglu

Finding similar data in high-dimensional spaces is one of the important tasks in multimedia applications. Approaches introduced to find exact searching techniques often use tree-based index structures which are known to suffer from the…

数据库 · 计算机科学 2022-11-17 Omid Jafari , Parth Nagarkar

In Generalized Linear Estimation (GLE) problems, we seek to estimate a signal that is observed through a linear transform followed by a component-wise, possibly nonlinear and noisy, channel. In the Bayesian optimal setting, Generalized…

无序系统与神经网络 · 物理学 2021-02-03 Luca Saglietti , Yue M. Lu , Carlo Lucibello

In this paper we describe a framework towards computing well-localized, robust motion plans through the perception-aware motion planning problem, whereby we seek a low-cost motion plan subject to a separate constraint on perception…

机器人学 · 计算机科学 2017-12-08 Brian Ichter , Benoit Landry , Edward Schmerling , Marco Pavone

Approximate Nearest Neighbor Search (ANNS) is a fundamental problem in many areas of machine learning and data mining. During the past decade, numerous hashing algorithms are proposed to solve this problem. Every proposed algorithm claims…

计算机视觉与模式识别 · 计算机科学 2019-06-20 Deng Cai

The fast online recommendation is critical for applications with large-scale databases; meanwhile, it is challenging to provide accurate recommendations in sparse scenarios. Hash technique has shown its superiority for speeding up the…

信息检索 · 计算机科学 2025-12-24 Yan Zhang , Li Deng , Lixin Duan , Ivor W. Tsang , Guowu Yang

Patent retrieval has been attracting tremendous interest from researchers in intellectual property and information retrieval communities in the past decades. However, most existing approaches rely on textual and metadata information of the…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Hongsong Wang , Yuqi Zhang

We present a new benchmark for evaluating Deep Search--a realistic and complex form of retrieval-augmented generation (RAG) that requires source-aware, multi-hop reasoning over diverse, sparsed, but related sources. These include documents,…

计算与语言 · 计算机科学 2025-07-01 Prafulla Kumar Choubey , Xiangyu Peng , Shilpa Bhagavath , Kung-Hsiang Huang , Caiming Xiong , Chien-Sheng Wu

Text-based person search aims at retrieving images of a particular person based on a given textual description. A common solution for this task is to directly match the entire images and texts, i.e., global alignment, which fails to deal…

计算机视觉与模式识别 · 计算机科学 2024-06-25 Haiguang Wang , Yu Wu , Mengxia Wu , Cao Min , Min Zhang

Fairness has become a crucial aspect in the development of trustworthy machine learning algorithms. Current fairness metrics to measure the violation of demographic parity have the following drawbacks: (i) the average difference of model…

机器学习 · 计算机科学 2024-06-06 Jinqiu Jin , Haoxuan Li , Fuli Feng

Modern day computing increasingly relies on specialization to satiate growing performance and efficiency requirements. A core challenge in designing such specialized hardware architectures is how to perform mapping space search, i.e.,…

机器学习 · 计算机科学 2021-03-03 Kartik Hegde , Po-An Tsai , Sitao Huang , Vikas Chandra , Angshuman Parashar , Christopher W. Fletcher