scholarly journals Novelty Detection with Self-Organizing Maps for Autonomous Extraction of Salient Tracking Features

2019 ◽  
pp. 100-109
Author(s):  
Yann Bernard ◽  
Nicolas Hueber ◽  
Bernard Girau
Keyword(s):  
Novelty Detection ◽  
Self Organizing Maps ◽  
Self Organizing

GROUP OUTLIER FACTOR: A NEW SCORE USING SELF-ORGANISING MAP FOR GROUP-OUTLIER AND NOVELTY DETECTION

2013 ◽  
Vol 12 (02) ◽  
pp. 1350010
Author(s):  
AMINE CHAIBI ◽  
MUSTAPHA LEBBAH ◽  
HANANE AZZAG
Keyword(s):  
Novelty Detection ◽  
Experimental Results ◽  
Self Organizing Maps ◽  
Single Pattern ◽  
Self Organising Map ◽  
Self Organizing

This paper describe a new concept of "cluster outlier-ness". In order to quantify it, we propose a relative isolation score named group outlier factor (GOF). GOF is a score, which is computed during a clustering process using self-organizing maps. The main difference between GOF and existing methods is that, being an outlier is not associated to a single pattern but to a cluster. Thus, an outlier factor (OF) with respect to each cluster is computed for each new sample and compared to the GOF score associated for each cluster. OF is used as a novelty detection classifier. This approach allows to identify meaningful outlier-clusters and detects novel patterns that previous approaches could not find. Experimental results and comparison studies show that the use of GOF sensibly improves the results in term of cluster-outlier and novelty detection.

Ligand-Based Virtual Screening by Novelty Detection with Self-Organizing Maps

2007 ◽  
Vol 47 (6) ◽  
pp. 2044-2062 ◽  
Author(s):  
Dimitar Hristozov ◽  
Tudor I. Oprea ◽  
Johann Gasteiger
Keyword(s):  
Virtual Screening ◽  
Novelty Detection ◽  
Self Organizing Maps ◽  
Self Organizing

ChemInform Abstract: Ligand-Based Virtual Screening by Novelty Detection with Self-Organizing Maps.

ChemInform ◽  
2008 ◽  
Vol 39 (7) ◽  
Author(s):  
Dimitar Hristozov ◽  
Tudor I. Oprea ◽  
Johann Gasteiger
Keyword(s):  
Virtual Screening ◽  
Novelty Detection ◽  
Self Organizing Maps ◽  
Self Organizing

scholarly journals Novelty Detection Methodology Based on Self-Organizing Maps for Power Quality Monitoring

2021 ◽  
Author(s):  
Juan Jose Saucedo-Dorantes ◽  
David Alejandro Elvira-Ortiz ◽  
Arturo Yosimar Jaen-Cuéllar ◽  
Manuel Toledano-Ayala
Keyword(s):  
Power Quality ◽  
Intelligent Systems ◽  
Novelty Detection ◽  
Automatic Monitoring ◽  
Quality Monitoring ◽  
Self Organizing Maps ◽  
Power Quality Monitoring ◽  
Power Disturbances ◽  
Statistical Time ◽  
Self Organizing

The inclusion of intelligent systems in the modern industry is demanding the development of the automatic monitoring and continuous analysis of the data related to entire processes, this is a challenge of the industry 4.0 for the energy management. In this regard, this chapter proposes a novelty detection methodology based on Self-Organizing Maps (SOM) for Power Quality Monitoring. The contribution and originality of this proposed method consider the characterization of synthetic electric power signals by estimating a meaningful set of statistical time-domain based features. Subsequently, the modeling of the data distribution through a collaborative SOM’s neuron grid models facilitates the detection of novel events related to the occurrence of power disturbances. The performance of the proposed method is validated by analyzing and assessing four different conditions such as normal, sag, swell, and fluctuations. The obtained results make the proposed method suitable for being implemented in embedded systems for online monitoring.

A Psychographic Segmentation of Kuwaiti Travelers Using Self-Organizing Maps

2019 ◽  
Vol 24 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Yvette Reisinger ◽  
Mohamed M. Mostafa ◽  
John P. Hayes
Keyword(s):  
Self Organizing Maps ◽  
Self Organizing

Self Organizing Maps, Pattern Recognition and Financial Crises

2011 ◽  
Author(s):  
Sylvain Barthelemy ◽  
Pascal Devaux ◽  
Francois Faure ◽  
Matthieu Pautonnier
Keyword(s):  
Pattern Recognition ◽  
Financial Crises ◽  
Self Organizing Maps ◽  
Self Organizing

Using self organizing maps to analyze larval fish assemblage vertical dynamics through environmental-ontogenetic gradients

2021 ◽  
pp. 107410
Author(s):  
I. Álvarez ◽  
J.S. Font-Muñoz ◽  
I. Hernández-Carrasco ◽  
C. Díaz-Gil ◽  
P.M. Salgado-Hernanz ◽  
...  
Keyword(s):  
Fish Assemblage ◽  
Larval Fish ◽  
Self Organizing Maps ◽  
Self Organizing

scholarly journals The Spread of the COVID-19 Outbreak in Brazil: An Overview by Kohonen Self-Organizing Map Networks

Medicina ◽  
2021 ◽  
Vol 57 (3) ◽  
pp. 235
Author(s):  
Diego Galvan ◽  
Luciane Effting ◽  
Hágata Cremasco ◽  
Carlos Adam Conte-Junior
Keyword(s):  
The Self ◽  
Self Organizing Map ◽  
Virus Spread ◽  
Self Organizing Maps ◽  
The North ◽  
Som Clustering ◽  
Unsupervised Neural Networks ◽  
Mining Tools ◽  
Temporal Spread ◽  
Self Organizing

Background and objective: In the current pandemic scenario, data mining tools are fundamental to evaluate the measures adopted to contain the spread of COVID-19. In this study, unsupervised neural networks of the Self-Organizing Maps (SOM) type were used to assess the spatial and temporal spread of COVID-19 in Brazil, according to the number of cases and deaths in regions, states, and cities. Materials and methods: The SOM applied in this context does not evaluate which measures applied have helped contain the spread of the disease, but these datasets represent the repercussions of the country’s measures, which were implemented to contain the virus’ spread. Results: This approach demonstrated that the spread of the disease in Brazil does not have a standard behavior, changing according to the region, state, or city. The analyses showed that cities and states in the north and northeast regions of the country were the most affected by the disease, with the highest number of cases and deaths registered per 100,000 inhabitants. Conclusions: The SOM clustering was able to spatially group cities, states, and regions according to their coronavirus cases, with similar behavior. Thus, it is possible to benefit from the use of similar strategies to deal with the virus’ spread in these cities, states, and regions.

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