Title Time Series Segmentation of Paleoclimate Tipping Points by an Evolutionary Algorithm
Authors PÉREZ ORTIZ, MARÍA, Gutierrez, P. A. , SÁNCHEZ MONEDERO, JAVIER, Hervas-Martinez, C. , Nikolaou, Athanasia , Dicaire, Isabelle , FERNÁNDEZ NAVARRO, FRANCISCO DE ASÍS
External publication Si
Means Lect. Notes Comput. Sci.
Scope Proceedings Paper
Nature Científica
JCR Quartile 4
SJR Quartile 2
SJR Impact 0.35400
Publication date 01/01/2014
ISI 000342836300029
Abstract Recent studies propose that some dynamical systems, such as climate, ecological and financial systems, among others, present critical transition points named to as tipping points (TP). Climate TPs can severely affect millions of lives on Earth so that an active scientific community is working on finding early warning signals. This paper deals with the segmentation of a paleoclimate time series to find segments sharing common patterns with the purpose of finding one or more kinds of segments corresponding to TPs. Due to the limitations of classical statistical methods, we propose the use of a genetic algorithm to automatically segment the series together with a method to perform time series segmentation comparisons. Without a priori information, the method clusters together most of the TPs and avoids false positives, which is a promising result given the challenging nature of the problem.
Keywords Time series segmentation; genetic algorithms; clustering; paleoclimate data; tipping points; abrupt climate change
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