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Keywords = outliers in terms of linguistic quantification

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12 pages, 421 KiB  
Article
Outlier Recognition via Linguistic Aggregation of Graph Databases
by Adam Niewiadomski, Agnieszka Duraj and Monika Bartczak
Appl. Sci. 2021, 11(16), 7434; https://doi.org/10.3390/app11167434 - 12 Aug 2021
Viewed by 1779
Abstract
Datasets frequently contain uncertain data that, if not interpreted with care, may affect information analysis negatively. Such rare, strange, or imperfect data, here called “outliers” or “exceptions” can be ignored in further processing or, on the other hand, handled by dedicated algorithms to [...] Read more.
Datasets frequently contain uncertain data that, if not interpreted with care, may affect information analysis negatively. Such rare, strange, or imperfect data, here called “outliers” or “exceptions” can be ignored in further processing or, on the other hand, handled by dedicated algorithms to decide if they contain valuable, though very rare, information. There are different definitions and methods for handling outliers, and here, we are interested, in particular, in those based on linguistic quantification and fuzzy logic. In this paper, for the first time, we apply definitions of outliers and methods for recognizing them based on fuzzy sets and linguistically quantified statements to find outliers in non-relational, here graph-oriented, databases. These methods are proposed and exemplified to identify objects being outliers (e.g., to exclude them from processing). The novelty of this paper are the definitions and recognition algorithms for outliers using fuzzy logic and linguistic quantification, if traditional quantitative and/or measurable information is inaccessible, that frequently takes place in the graph nature of considered datasets. Full article
(This article belongs to the Collection Machine Learning in Computer Engineering Applications)
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