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Relevance Models are well-known retrieval models and capable of producing competitive results. However, because they use query expansion they can be very slow. We address this slowness by incorporating two variants of locality sensitive…

信息检索 · 计算机科学 2016-07-12 Dominik Wurzer , Miles Osborne , Victor Lavrenko

We introduce a new method for neighbourhood selection in linear structural equation models that improves over classical methods such as best subset selection (BSS) and the Lasso. Our method, called KL-BSS, takes advantage of the existence…

统计理论 · 数学 2025-10-07 Ming Gao , Wai Ming Tai , Bryon Aragam

We introduce kLog, a novel approach to statistical relational learning. Unlike standard approaches, kLog does not represent a probability distribution directly. It is rather a language to perform kernel-based learning on expressive logical…

人工智能 · 计算机科学 2014-10-17 Paolo Frasconi , Fabrizio Costa , Luc De Raedt , Kurt De Grave

LSH (locality sensitive hashing) had emerged as a powerful technique in nearest-neighbor search in high dimensions [IM98, HIM12]. Given a point set $P$ in a metric space, and given parameters $r$ and $\varepsilon > 0$, the task is to…

计算几何 · 计算机科学 2017-04-11 Sariel Har-Peled , Sepideh Mahabadi

Neural word representations are at the core of many state-of-the-art natural language processing models. A widely used approach is to pre-train, store and look up word or character embedding matrices. While useful, such representations…

计算与语言 · 计算机科学 2019-06-05 Chinnadhurai Sankar , Sujith Ravi , Zornitsa Kozareva

Multiple kernel clustering (MKC) is committed to achieving optimal information fusion from a set of base kernels. Constructing precise and local kernel matrices is proved to be of vital significance in applications since the unreliable…

机器学习 · 计算机科学 2022-07-08 Liang Li , Siwei Wang , Xinwang Liu , En Zhu , Li Shen , Kenli Li , Keqin Li

Multiple kernel methods less consider the intrinsic manifold structure of multiple kernel data and estimate the consensus kernel matrix with quadratic number of variables, which makes it vulnerable to the noise and outliers within multiple…

机器学习 · 计算机科学 2024-10-22 Liang Du , Xin Ren , Haiying Zhang , Peng Zhou

Kernel-based statistical methods are efficient, but their performance depends heavily on the selection of kernel parameters. In literature, the optimization studies on kernel-based chemometric methods is limited and often reduced to grid…

Finding similar images is a necessary operation in many multimedia applications. Images are often represented and stored as a set of high-dimensional features, which are extracted using localized feature extraction algorithms. Locality…

多媒体 · 计算机科学 2020-10-16 Omid Jafari , Parth Nagarkar , Jonathan Montaño

In the last decade, a considerable research effort has been devoted to developing adaptive algorithms based on kernel functions. One of the main features of these algorithms is that they form a family of universal approximation techniques,…

信号处理 · 电气工程与系统科学 2018-08-21 A. Flores , R. C. de Lamare

Unsupervised hashing has attracted much attention for binary representation learning due to the requirement of economical storage and efficiency of binary codes. It aims to encode high-dimensional features in the Hamming space with…

计算机视觉与模式识别 · 计算机科学 2022-09-01 Xiaoqin Wang , Chen Chen , Rushi Lan , Licheng Liu , Zhenbing Liu , Huiyu Zhou , Xiaonan Luo

It is a key to construct a similarity graph in graph-oriented subspace learning and clustering. In a similarity graph, each vertex denotes a data point and the edge weight represents the similarity between two points. There are two popular…

机器学习 · 计算机科学 2017-05-17 Liangli Zhen , Zhang Yi , Xi Peng , Dezhong Peng

We discuss the problem of performing similarity search over function spaces. To perform search over such spaces in a reasonable amount of time, we use {\it locality-sensitive hashing} (LSH). We present two methods that allow LSH functions…

机器学习 · 计算机科学 2020-02-11 Will Shand , Stephen Becker

Local Polynomial Regression (LPR) is a widely used nonparametric method for modeling complex relationships due to its flexibility and simplicity. It estimates a regression function by fitting low-degree polynomials to localized subsets of…

统计方法学 · 统计学 2025-07-22 Yaniv Shulman

We propose a new technique for constructing low-rank approximations of matrices that arise in kernel methods for machine learning. Our approach pairs a novel automatically constructed analytic expansion of the underlying kernel function…

机器学习 · 计算机科学 2022-02-09 John Paul Ryan , Anil Damle

Recently, supervised hashing methods have attracted much attention since they can optimize retrieval speed and storage cost while preserving semantic information. Because hashing codes learning is NP-hard, many methods resort to some form…

机器学习 · 计算机科学 2017-12-05 Zihao Hu , Xiyi Luo , Hongtao Lu , Yong Yu

In most adaptive signal processing applications, system linearity is assumed and adaptive linear filters are thus used. The traditional class of supervised adaptive filters rely on error-correction learning for their adaptive capability.…

机器学习 · 计算机科学 2015-08-31 Songlin Zhao

Dictionary learning algorithms have been successfully used in both reconstructive and discriminative tasks, where the input signal is represented by a linear combination of a few dictionary atoms. While these methods are usually developed…

机器学习 · 统计学 2015-02-12 Soheil Bahrampour , Nasser M. Nasrabadi , Asok Ray , Kenneth W. Jenkins

Over the last decade, kernel methods for nonlinear processing have successfully been used in the machine learning community. The primary mathematical tool employed in these methods is the notion of the Reproducing Kernel Hilbert Space.…

机器学习 · 计算机科学 2017-04-26 Pantelis Bouboulis , Sergios Theodoridis

Kernel methods have been successfully applied to the areas of pattern recognition and data mining. In this paper, we mainly discuss the issue of propagating labels in kernel space. A Kernel-Induced Label Propagation (Kernel-LP) framework by…

计算机视觉与模式识别 · 计算机科学 2019-06-03 Zhao Zhang , Lei Jia , Mingbo Zhao , Guangcan Liu , Meng Wang , Shuicheng Yan