Results 21 to 30 of about 779 (142)

A Data Analytics-Based Energy Information System (EIS) Tool to Perform Meter-Level Anomaly Detection and Diagnosis in Buildings

open access: yesEnergies, 2021
Recently, the spread of smart metering infrastructures has enabled the easier collection of building-related data. It has been proven that a proper analysis of such data can bring significant benefits for the characterization of building performance and ...
Roberto Chiosa   +2 more
doaj   +1 more source

A Novel Trend Symbolic Aggregate Approximation for Time Series

open access: yesCoRR, 2019
9 pages ...
Yufeng Yu 0003   +4 more
openaire   +2 more sources

Symbolic Aggregate approXimation (SAX) under interval uncertainty

open access: yes2015 Annual Conference of the North American Fuzzy Information Processing Society (NAFIPS) held jointly with 2015 5th World Conference on Soft Computing (WConSC), 2015
In many practical situations, we monitor a system by continuously measuring the corresponding quantities, to make sure that any abnormal deviation is detected as early as possible. Often, we do not have readily available algorithms to detect abnormality, so we need to use machine learning techniques.
Stylios, Chrysostomos D.   +1 more
openaire   +2 more sources

Packer Detection for Multi-Layer Executables Using Entropy Analysis

open access: yesEntropy, 2017
Packing algorithms are broadly used to avoid anti-malware systems, and the proportion of packed malware has been growing rapidly. However, just a few studies have been conducted on detection various types of packing algorithms in a systemic way ...
Munkhbayar Bat-Erdene   +3 more
doaj   +1 more source

Human Activity Recognition Based on Symbolic Representation Algorithms for Inertial Sensors

open access: yesSensors, 2018
Mobile sensing has allowed the emergence of a variety of solutions related to the monitoring and recognition of human activities (HAR). Such solutions have been implemented in smartphones for the purpose of better understanding human behavior.
Wesllen Sousa Lima   +3 more
doaj   +1 more source

Net Electricity Clustering at Different Temporal Resolutions Using a SAX-Based Method for Integrated Distribution System Planning

open access: yesIEEE Access, 2019
This paper addresses a major utility and regulator concern of characterizing customer net electricity consumption profiles to realize integrated distribution system planning.
Michael Emmanuel, Julieta Giraldez
doaj   +1 more source

SAX and Random Projection Algorithms for the Motif Discovery of Orbital Asteroid Resonance Using Big Data Platforms

open access: yesSensors, 2022
The phenomenon of big data has occurred in many fields of knowledge, one of which is astronomy. One example of a large dataset in astronomy is that of numerically integrated time series asteroid orbital elements from a time span of millions to billions ...
Lala Septem Riza   +5 more
doaj   +1 more source

Abridged Symbolic Representation of Time Series for Clustering

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2019
In recent years a couple of methods aimed at time series symbolic representation have been introduced or developed. This activity is mainly justified by practical considerations such memory savings or fast data base searching.
Jerzy Korzeniewski
doaj   +1 more source

Anomaly detection in ECG based on trend symbolic aggregate approximation

open access: yesMathematical Biosciences and Engineering, 2019
ECG anomaly detection is a necessary approach to detect disease Electrocardiography( ECG) signals before the detail diagnosis process in medical field to gauge the health of the human heart. Nowadays, there are many anomaly detection methods for ECG detection including supervised learning and unsupervised learning.
Chunkai Zhang   +3 more
openaire   +3 more sources

Measuring the Impact of Financial News and Social Media on Stock Market Modeling Using Time Series Mining Techniques

open access: yesAlgorithms, 2018
In this work, we study the task of predicting the closing price of the following day of a stock, based on technical analysis, news articles and public opinions.
Foteini Kollintza-Kyriakoulia   +2 more
doaj   +1 more source

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