Results 21 to 30 of about 13,715 (249)

A Comparison of Outlier Detection Techniques for High-Dimensional Data

open access: yesInternational Journal of Computational Intelligence Systems, 2018
Outlier detection is a hot topic in machine learning. With the newly emerging technologies and diverse applications, the interest of outlier detection is increasing greatly.
Xiaodan Xu   +3 more
doaj   +1 more source

Context-aware Adaptive Outlier Detection in Trajectory Data

open access: yes, 2020
With the advent of data mining and business processes automation, outlier detection has evolved into a major problem attracting significant research in relation to several application domains.
Wenbin Zhang   +9 more
core   +1 more source

A Graph-Based Method for Active Outlier Detection With Limited Expert Feedback

open access: yesIEEE Access, 2019
Labeled data, particularly for the outlier class, are difficult to obtain. Thus, outlier detection is typically regarded as an unsupervised learning problem. However, it still has an opportunity to obtain few labeled data.
Yongmou Li   +4 more
doaj   +1 more source

Fluctuation-based outlier detection

open access: yesScientific Reports, 2023
Outlier detection is an important topic in machine learning and has been used in a wide range of applications. Outliers are objects that are few in number and deviate from the majority of objects.
Xusheng Du   +4 more
doaj   +1 more source

RODA: A Fast Outlier Detection Algorithm Supporting Multi-Queries

open access: yesIEEE Access, 2021
Outlier detection is an important task in the field of big data analysis. The technology has been extensively used in network security, sensor data analysis, public health and so on.
Xite Wang, Jiafan Li, Mei Bai, Qian Ma
doaj   +1 more source

Effective and Robust Boundary-Based Outlier Detection Using Generative Adversarial Networks

open access: yes, 2022
Outlier detection aims to identify samples that do not match the expected patterns or major distribution of the dataset. It has played an important role in many domains such as credit card fraud identification, network intrusion detection, medical image ...
Liang Chang   +11 more
core   +1 more source

Outlier detection by logic programming [PDF]

open access: yesACM Transactions on Computational Logic, 2007
The development of effective knowledge discovery techniques has become a very active research area in recent years due to the important impact it has had in several relevant application domains. One interesting task therein is that of singling out anomalous individuals from a given population, for example, to detect rare events in time-series analysis ...
ANGIULLI, Fabrizio   +2 more
openaire   +4 more sources

A Probabilistic Transformation of Distance-Based Outliers

open access: yesMachine Learning and Knowledge Extraction, 2023
The scores of distance-based outlier detection methods are difficult to interpret, and it is challenging to determine a suitable cut-off threshold between normal and outlier data points without additional context.
David Muhr   +2 more
doaj   +1 more source

RANSAC FOR OUTLIER DETECTION

open access: yesGeodesy and cartography, 2012
Up-to-date digital photogrammetry involves operations on huge data sets, and with classical image processing procedures it might be time consuming to find out the best solution. One of the key tasks is to detect outliers in given data, eg for curve fitting or image matching. The problem is hard as the number of outliers is usually large, possibly
Ruzgienė, Birutė, Förstner, Wolfgang
openaire   +2 more sources

An Innovative Outlier Detection Method Using Localized Thresholds [PDF]

open access: yes, 2012
In this paper, we investigate the research problem of specifying the thresholds to effectively detect outliers and propose an innovative technique that leverages multiple localized thresholds for detecting outliers.
Cao, Jie   +5 more
core   +1 more source

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