Results 21 to 30 of about 225,245 (281)

A Novel Wind Power Outlier Detection Method with Support Vector Machine Optimized by Improved Harris Hawk

open access: yesEnergies, 2023
The accurate detection of wind power outliers plays a crucial role in wind power forecasting, while the inherited strong randomness and high fluctuations bring great challenges to this issue.
Jingtao Huang, Jin Qin, Shuzhong Song
doaj   +1 more source

Vertical Approach Anomaly Detection Using Local Outlier Factor

open access: yes, 2023
Detection of anomalies based on smart meter data is crucial to identify potential risks and unusual events at an early stage. In addition anomaly detection can be used as a tool to detect unwanted outliers, caused by operational failures and technical faults, for the pre-processing of data for machine learning, to detect concept drift as well as ...
Johannesen, Nils Jakob   +2 more
openaire   +2 more sources

Design and analysis of management platform based on financial big data [PDF]

open access: yesPeerJ Computer Science, 2023
Traditional financial accounting will become limited by new technologies which are unable to meet the market development. In order to make financial big data generate business value and improve the information application level of financial management ...
Yuhua Chen   +3 more
doaj   +2 more sources

TADILOF: Time Aware Density-Based Incremental Local Outlier Detection in Data Streams

open access: yesSensors, 2020
Outlier detection in data streams is crucial to successful data mining. However, this task is made increasingly difficult by the enormous growth in the quantity of data generated by the expansion of Internet of Things (IoT).
Jen-Wei Huang   +2 more
doaj   +1 more source

A new outlier detection algorithm based on observation-point mechanism

open access: yesShenzhen Daxue xuebao. Ligong ban, 2022
Outlier detection is an important branch of data mining research, and has wide applications in the fields of finance, telecommunications, and biology. The traditional nearest neighbor-based outlier detection (NNOD) and local outlier factor-based outlier ...
YU Wanguo, HE Yulin, QIN Huilin
doaj   +1 more source

Predictive intelligence to the edge through approximate collaborative context reasoning [PDF]

open access: yes, 2017
We focus on Internet of Things (IoT) environments where a network of sensing and computing devices are responsible to locally process contextual data, reason and collaboratively infer the appearance of a specific phenomenon (event).
Anagnostopoulos, Christos   +1 more
core   +1 more source

An Incremental Local Outlier Detection Method in the Data Stream

open access: yesApplied Sciences, 2018
Outlier detection has attracted a wide range of attention for its broad applications, such as fault diagnosis and intrusion detection, among which the outlier analysis in data streams with high uncertainty and infinity is more challenging.
Haiqing Yao   +3 more
doaj   +1 more source

A Two-Level Approach based on Integration of Bagging and Voting for Outlier Detection

open access: yesJournal of Data and Information Science, 2020
The main aim of this study is to build a robust novel approach that is able to detect outliers in the datasets accurately. To serve this purpose, a novel approach is introduced to determine the likelihood of an object to be extremely different from the ...
Dogan Alican, Birant Derya
doaj   +1 more source

Hybrid Machine Learning–Statistical Method for Anomaly Detection in Flight Data

open access: yesApplied Sciences, 2022
This paper investigates the use of an unsupervised hybrid statistical–local outlier factor algorithm to detect anomalies in time-series flight data. Flight data analysis is an activity carried out by airlines primarily as a means of improving the safety ...
Sameer Kumar Jasra   +3 more
doaj   +1 more source

On Heterotic Orbifolds, M Theory and Type I' Brane Engineering [PDF]

open access: yes, 2001
Horava--Witten M theory -- heterotic string duality poses special problems for the twisted sectors of heterotic orbifolds. In [1] we explained how in M theory the twisted states couple to gauge fields apparently living on M9 branes at both ends of the ...
Gorbatov, E.   +4 more
core   +2 more sources

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