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Sketching is a probabilistic data compression technique that has been largely developed in the computer science community. Numerical operations on big datasets can be intolerably slow; sketching algorithms address this issue by generating a…

统计方法学 · 统计学 2019-04-04 Daniel Ahfock , William J. Astle , Sylvia Richardson

In recent years, deep hashing methods have been proved to be efficient since it employs convolutional neural network to learn features and hashing codes simultaneously. However, these methods are mostly supervised. In real-world…

计算机视觉与模式识别 · 计算机科学 2018-03-20 Sheng Jin

Selection functions are vital for understanding the observational biases of spectroscopic surveys. With the wide variety of multi-object spectrographs currently in operation and becoming available soon, we require easily generalisable…

星系天体物理 · 物理学 2020-02-07 Andrew Everall , Payel Das

Feature selection is one of the most challenging issues in machine learning, especially while working with high dimensional data. In this paper, we address the problem of feature selection and propose a new approach called Evolving Fast and…

神经与进化计算 · 计算机科学 2020-05-12 Uzay Cetin , Yunus Emre Gundogmus

Feature selection with specific multivariate performance measures is the key to the success of many applications, such as image retrieval and text classification. The existing feature selection methods are usually designed for…

机器学习 · 计算机科学 2015-03-19 Qi Mao , Ivor W. Tsang

Deep features are a cornerstone of computer vision research, capturing image semantics and enabling the community to solve downstream tasks even in the zero- or few-shot regime. However, these features often lack the spatial resolution to…

计算机视觉与模式识别 · 计算机科学 2024-04-03 Stephanie Fu , Mark Hamilton , Laura Brandt , Axel Feldman , Zhoutong Zhang , William T. Freeman

Fine-grained hashing has become a powerful solution for rapid and efficient image retrieval, particularly in scenarios requiring high discrimination between visually similar categories. To enable each hash bit to correspond to specific…

计算机视觉与模式识别 · 计算机科学 2025-09-23 Peng Wang , Yong Li , Lin Zhao , Xiu-Shen Wei

Kernel density estimation is a simple and effective method that lies at the heart of many important machine learning applications. Unfortunately, kernel methods scale poorly for large, high dimensional datasets. Approximate kernel density…

数据结构与算法 · 计算机科学 2019-12-06 Benjamin Coleman , Anshumali Shrivastava

Feature selection is vital for building effective predictive models, as it reduces dimensionality and emphasizes key features. However, current research often suffers from limited benchmarking and reliance on proprietary datasets. This…

机器学习 · 计算机科学 2025-07-16 Vanderson Rocha , Diego Kreutz , Gabriel Canto , Hendrio Bragança , Eduardo Feitosa

We consider the $\textit{Similarity Sketching}$ problem: Given a universe $[u] = \{0,\ldots, u-1\}$ we want a random function $S$ mapping subsets $A\subseteq [u]$ into vectors $S(A)$ of size $t$, such that the Jaccard similarity $J(A,B) =…

数据结构与算法 · 计算机科学 2024-05-07 Søren Dahlgaard , Mathias Bæk Tejs Langhede , Jakob Bæk Tejs Houen , Mikkel Thorup

Feature selection is a common step in many ranking, classification, or prediction tasks and serves many purposes. By removing redundant or noisy features, the accuracy of ranking or classification can be improved and the computational cost…

Feature selection is an important preprocessing step in machine learning and data mining. In real-world applications, costs, including money, time and other resources, are required to acquire the features. In some cases, there is a test…

人工智能 · 计算机科学 2013-05-22 Fan Min , Qinghua Hu , William Zhu

Learning based hashing plays a pivotal role in large-scale visual search. However, most existing hashing algorithms tend to learn shallow models that do not seek representative binary codes. In this paper, we propose a novel hashing…

计算机视觉与模式识别 · 计算机科学 2018-04-26 Zhaoqiang Xia , Xiaoyi Feng , Jinye Peng , Abdenour Hadid

The hashing trick is a machine learning technique used to encode categorical features into a numerical vector representation of pre-defined fixed length. It works by using the categorical hash values as vector indices, and updating the…

机器学习 · 计算机科学 2021-02-09 M. Andrecut

Feature generation aims to generate new and meaningful features to create a discriminative representation space.A generated feature is meaningful when the generated feature is from a feature pair with inherent feature interaction. In the…

机器学习 · 计算机科学 2023-09-15 Wangyang Ying , Dongjie Wang , Kunpeng Liu , Leilei Sun , Yanjie Fu

Proliferation of touch-based devices has made sketch-based image retrieval practical. While many methods exist for sketch-based object detection/image retrieval on small datasets, relatively less work has been done on large (web)-scale…

计算机视觉与模式识别 · 计算机科学 2015-11-03 Sarthak Parui , Anurag Mittal

An analysis of high-dimensional data can offer a detailed description of a system but is often challenged by the curse of dimensionality. General dimensionality reduction techniques can alleviate such difficulty by extracting a few…

统计方法学 · 统计学 2021-09-28 Di Bo , Hoon Hwangbo , Vinit Sharma , Corey Arndt , Stephanie C. TerMaath

The rapid growth of large language models (LLMs) has outpaced the memory constraints of edge devices, necessitating extreme weight compression beyond the 1-bit limit. While quantization reduces model size, it is fundamentally limited to 1…

机器学习 · 计算机科学 2025-06-24 Sunan Zou , Ziyun Zhang , Xueting Sun , Guojie Luo

Bayesian computation of high dimensional linear regression models with a popular Gaussian scale mixture prior distribution using Markov Chain Monte Carlo (MCMC) or its variants can be extremely slow or completely prohibitive due to the…

统计方法学 · 统计学 2021-05-12 Rajarshi Guhaniyogi , Aaron Scheffler

This paper presents a novel neural network architecture featuring automatic fixation point selection, designed to efficiently address complex tasks with reduced network size and computational overhead. The proposed model consists of: a…

计算机视觉与模式识别 · 计算机科学 2025-01-06 Shuguang Wang , Yuanjing Wang