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The growth of network-connected devices has led to an exponential increase in data generation, creating significant challenges for efficient data analysis. This data is generated continuously, creating a dynamic flow known as a data stream.…

机器学习 · 计算机科学 2023-12-27 Kazuhisa Fujita

Recently, the cyclic association rules have been introduced in order to discover rules from items characterized by their regular variation over time. In real life situations, temporal databases are often appended or updated. Rescanning the…

数据库 · 计算机科学 2015-06-01 Eya ben Ahmed , Mohamed Salah Gouider

Classic Graph Neural Network (GNN) inference approaches, designed for static graphs, are ill-suited for streaming graphs that evolve with time. The dynamism intrinsic to streaming graphs necessitates constant updates, posing unique…

机器学习 · 计算机科学 2025-07-29 Dan Wu , Zhaoying Li , Tulika Mitra

This paper develops a theory and methodology for estimation of Gini index such that both cost of sampling and estimation error are minimum. Methods in which sample size is fixed in advance, cannot minimize estimation error and sampling cost…

统计方法学 · 统计学 2017-09-21 Shyamal Krishna De , Bhargab Chattopadhyay

One of the most influential results in neural network theory is the universal approximation theorem [1, 2, 3] which states that continuous functions can be approximated to within arbitrary accuracy by single-hidden-layer feedforward neural…

机器学习 · 计算机科学 2021-12-16 Clemens Hutter , Recep Gül , Helmut Bölcskei

The recently developed matrix based Renyi's entropy enables measurement of information in data simply using the eigenspectrum of symmetric positive semi definite (PSD) matrices in reproducing kernel Hilbert space, without estimation of the…

机器学习 · 统计学 2023-01-10 Tieliang Gong , Yuxin Dong , Shujian Yu , Bo Dong

Graph based entropy, an index of the diversity of events in their distribution to parts of a co-occurrence graph, is proposed for detecting signs of structural changes in the data that are informative in explaining latent dynamics of…

社会与信息网络 · 计算机科学 2019-05-03 Yukio Ohsawa

Gradient Boosting Decision Tree (GBDT) is one of the most popular machine learning models in various applications. However, in the traditional settings, all data should be simultaneously accessed in the training procedure: it does not allow…

机器学习 · 计算机科学 2025-02-04 Huawei Lin , Jun Woo Chung , Yingjie Lao , Weijie Zhao

We give an algorithm, based on the $\phi$-expansion of Parry, in order to compute the topological entropy of a class of shift spaces. The idea is the solve an inverse problem for the dynamical systems $\beta x+\alpha \mod1$.The first part…

动力系统 · 数学 2008-06-06 Bastien Faller , Charles-Edouard Pfister

In large language models (LLMs), each block operates on the residual stream to map input token sequences to output token distributions. However, most of the interpretability literature focuses on internal latent representations, leaving…

机器学习 · 计算机科学 2026-02-03 Riccardo Ali , Francesco Caso , Christopher Irwin , Pietro Liò

Microscopic formula to describe the entropy of biomolecular solutions are derived based on the Gibbs formula of entropy, and the generalized Langevin theory combined with the RISM/3D-RISM theory. Two formula are derived: one is concerned…

统计力学 · 物理学 2023-03-02 Fumio Hirata

Estimating frequencies of items over data streams is a common building block in streaming data measurement and analysis. Misra and Gries introduced their seminal algorithm for the problem in 1982, and the problem has since been revisited…

数据结构与算法 · 计算机科学 2017-05-23 Daniel Anderson , Pryce Bevan , Kevin Lang , Edo Liberty , Lee Rhodes , Justin Thaler

Class-incremental learning aims to learn new classes in an incremental fashion without forgetting the previously learned ones. Several research works have shown how additional data can be used by incremental models to help mitigate…

机器学习 · 计算机科学 2023-10-11 Quentin Jodelet , Xin Liu , Yin Jun Phua , Tsuyoshi Murata

Permutation Entropy, introduced by Bandt and Pompe, is a widely used complexity measure for real-valued time series that is based on the relative order of values within consecutive segments of fixed length. After standardizing each segment…

机器学习 · 计算机科学 2025-08-28 Abhijeet Avhale , Joscha Diehl , Niraj Velankar , Emanuele Verri

This paper presents a novel method for finding features in the analysis of variable distributions stemming from time series. We apply the methodology to the case of submitted and accepted papers in peer-reviewed journals. We provide a…

数字图书馆 · 计算机科学 2019-10-15 Marcel Ausloos , Olgica Nedic , Aleksandar Dekanski

This study addresses the problem of learning a summary causal graph on time series with potentially different sampling rates. To do so, we first propose a new causal temporal mutual information measure for time series. We then show how this…

人工智能 · 计算机科学 2023-11-03 Charles K. Assaad , Emilie Devijver , Eric Gaussier

Incremental data mining algorithms process frequent updates to dynamic datasets efficiently by avoiding redundant computation. Existing incremental extension to shared nearest neighbor density based clustering (SNND) algorithm cannot handle…

数据库 · 计算机科学 2017-02-02 Panthadeep Bhattacharjee , Amit Awekar

Time dependent entropy of constant force motion is investigated. Their joint entropy so called Leipnik's entropy is obtained. The main purpose of this work is to calculate Leipnik's entropy by using time dependent wave function which is…

量子物理 · 物理学 2007-09-23 O. Ozcan , E. Akturk , R. Sever

Estimation of quantiles is one of the most fundamental real-time analysis tasks. Most real-time data streams vary dynamically with time and incremental quantile estimators document state-of-the art performance to track quantiles of such…

统计方法学 · 统计学 2019-02-15 Hugo Lewi Hammer , Anis Yazidi , Håvard Rue

A definition of entropy via the Kolmogorov algorithmic complexity is discussed. As examples, we show how the meanfield theory for the Ising model, and the entropy of a perfect gas can be recovered. The connection with computations are…

统计力学 · 物理学 2007-05-23 Somendra M. Bhattacharjee