A New Fuzzy Logic-Based Similarity Measure Applied to Large Gap Imputation for Uncorrelated Multivariate Time Series
Joint Authors
Phan, Thi-Thu-Hong
Bigand, André
Caillault, Émilie Poisson
Source
Applied Computational Intelligence and Soft Computing
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-08-09
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Information Technology and Computer Science
Abstract EN
The completion of missing values is a prevalent problem in many domains of pattern recognition and signal processing.
Analyzing data with incompleteness may lead to a loss of power and unreliable results, especially for large missing subsequence(s).
Therefore, this paper aims to introduce a new approach for filling successive missing values in low/uncorrelated multivariate time series which allows managing a high level of uncertainty.
In this way, we propose using a novel fuzzy weighting-based similarity measure.
The proposed method involves three main steps.
Firstly, for each incomplete signal, the data before a gap and the data after this gap are considered as two separated reference time series with their respective query windows Q b and Q a .
We then find the most similar subsequence ( Q b s ) to the subsequence before this gap Q b and the most similar one ( Q a s ) to the subsequence after the gap Q a .
To find these similar windows, we build a new similarity measure based on fuzzy grades of basic similarity measures and on fuzzy logic rules.
Finally, we fill in the gap with average values of the window following Q b s and the one preceding Q a s .
The experimental results have demonstrated that the proposed approach outperforms the state-of-the-art methods in case of multivariate time series having low/noncorrelated data but effective information on each signal.
American Psychological Association (APA)
Phan, Thi-Thu-Hong& Bigand, André& Caillault, Émilie Poisson. 2018. A New Fuzzy Logic-Based Similarity Measure Applied to Large Gap Imputation for Uncorrelated Multivariate Time Series. Applied Computational Intelligence and Soft Computing،Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1117067
Modern Language Association (MLA)
Phan, Thi-Thu-Hong…[et al.]. A New Fuzzy Logic-Based Similarity Measure Applied to Large Gap Imputation for Uncorrelated Multivariate Time Series. Applied Computational Intelligence and Soft Computing No. 2018 (2018), pp.1-15.
https://search.emarefa.net/detail/BIM-1117067
American Medical Association (AMA)
Phan, Thi-Thu-Hong& Bigand, André& Caillault, Émilie Poisson. A New Fuzzy Logic-Based Similarity Measure Applied to Large Gap Imputation for Uncorrelated Multivariate Time Series. Applied Computational Intelligence and Soft Computing. 2018. Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1117067
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1117067