PLA data reduction for speeding up time series comparison
Author
Source
The International Arab Journal of Information Technology
Issue
Vol. 9, Issue 5 (30 Sep. 2012)6 p.
Publisher
Publication Date
2012-09-30
Country of Publication
Jordan
No. of Pages
6
Main Subjects
Information Technology and Computer Science
Topics
Abstract EN
We consider comparison of two Piecewise Linear Approximation (PLA) data reduction methods, a recursive PLA-segmentation technique (Douglas-Pucker Algorithm) and a sequential PLA-segmentation technique (FAN) when applied in prior of our previously developed time series alignment technique SEA, which was established as a very effective method.
The outcome of these two combination are two new time series alignment methods : Rec SEA and Seq SEA.
The study shows that both Rec SEA and Seq SEA perform alignments as good as those of SEA with important reductions in data (Rec SEA: up to 60 %, Seq SEA up to 80 % samples reduction) and processing time(Rec SEA: up to 85 %, Seq SEA up to 95% time reduction) with respect to the SEA method.
This makes both the two new methods more suitable for time series databases querying, searching and retrieval.
Particularly, Seq SEA is significantly much faster than Rec SEA for long time series.
American Psychological Association (APA)
Boucheham, Bashir. 2012. PLA data reduction for speeding up time series comparison. The International Arab Journal of Information Technology،Vol. 9, no. 5.
https://search.emarefa.net/detail/BIM-305110
Modern Language Association (MLA)
Boucheham, Bashir. PLA data reduction for speeding up time series comparison. The International Arab Journal of Information Technology Vol. 9, no. 5 (Sep. 2012).
https://search.emarefa.net/detail/BIM-305110
American Medical Association (AMA)
Boucheham, Bashir. PLA data reduction for speeding up time series comparison. The International Arab Journal of Information Technology. 2012. Vol. 9, no. 5.
https://search.emarefa.net/detail/BIM-305110
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references.
Record ID
BIM-305110