Results 11 to 20 of about 225,245 (281)

Outlier Detection Credit Card Transactions Using Local Outlier Factor Algorithm (LOF)

open access: yesIJCCS (Indonesian Journal of Computing and Cybernetics Systems), 2019
Threats or fraud for credit card owners and banks as service providers have been harmed by the actions of perpetrators of credit card thieves. All transaction data are stored in the bank's database, but are limited in information and cannot be used as a ...
Silvano Sugidamayatno, Danang Lelono
doaj   +4 more sources

Local outlier factor algorithm based on correction of bidirectional neighbor

open access: yesTongxin xuebao, 2020
A local outlier factor algorithm based on bidirectional neighbor correction was proposed to solve the problems of existing outlier detection algorithms such as difficulty in parameter selection,poor efficiency and low accuracy.The bidirectional neighbor ...
Xiaohui YANG, Xiaoming LIU
doaj   +3 more sources

The Network Link Outlier Factor (NLOF) for Fault Localization [PDF]

open access: yesIEEE Open Journal of the Communications Society, 2020
We describe and experimentally evaluate the performance of our Network Link Outlier Factor (NLOF) for locating faults in communication networks. The NLOF is a unique outlier score assigned to each link in a network. It is computed using four distinct stages in a data analytics pipeline.
Christopher Mendoza, Michael P. Mcgarry
openaire   +2 more sources

Robust Incremental Outlier Detection Approach Based on a New Metric in Data Streams

open access: yesIEEE Access, 2021
Detecting outliers in real time from multivariate streaming data is a vital and challenging research topic in many areas. Recently introduced the incremental Local Outlier Factor (iLOF) approach and its variants have received considerable attention as ...
Ali Degirmenci, Omer Karal
doaj   +1 more source

An improved random forest-Monte Carlo method and application for structural reliability analysis of A-type independent liquid tank support structure

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectivesIn response to the increasing depth of research and design on liquefied natural gas (LNG) ship structures, higher requirements are put forward for a reliability analysis method that can quickly and accurately evaluate uncertain factors.
Xuejian LI   +3 more
doaj   +1 more source

Outlier detection and data filling based on KNN and LOF for power transformer operation data classification

open access: yesEnergy Reports, 2023
The missing and abnormal data in power transformer operation and monitoring greatly affect the accuracy of fault diagnosis and thus threaten the stable operation of power systems.
Dexu Zou   +9 more
doaj   +1 more source

An Efficient Density-Based Local Outlier Detection Approach for Scattered Data

open access: yesIEEE Access, 2019
After the local outlier factor was first proposed, there is a large family of local outlier detection approaches derived from it. Since the existing approaches only focus on the extent of overall separation between an object and its neighbors, and ignore
Shubin Su   +6 more
doaj   +1 more source

Electricity Theft Detection in AMI Based on Clustering and Local Outlier Factor

open access: yesIEEE Access, 2021
As one of the key components of smart grid, advanced metering infrastructure (AMI) provides an immense number of data, making technologies such as data mining more suitable for electricity theft detection.
Yanlin Peng   +6 more
doaj   +1 more source

Discrimination among Winding Mechanical Defects in Transformer Using Noise Detection and Data Mining Boosting Method [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2021
IIn this paper, an efficient method to detect and discriminate mechanical defects of transformer winding based on extracting the winding frequency responses using outlier data detection and ensemble algorithms ,which in total constitutes an efficient ...
Zahra Moravej   +2 more
doaj   +1 more source

Implementation and assessment of two density-based outlier detection methods over large spatial point clouds [PDF]

open access: yes, 2018
Several technologies provide datasets consisting of a large number of spatial points, commonly referred to as point-clouds. These point datasets provide spatial information regarding the phenomenon that is to be investigated, adding value through ...
Fissore, Francesca   +3 more
core   +4 more sources

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