Reducing sojourn points from recurrence plots to improve transition detection: Application to fetal heart rate transitions - Inserm - Institut national de la santé et de la recherche médicale Accéder directement au contenu
Article Dans Une Revue Computers in Biology and Medicine Année : 2015

Reducing sojourn points from recurrence plots to improve transition detection: Application to fetal heart rate transitions

Résumé

The analysis of biomedical signals demonstrating complexity through recurrence plots is challenging. Quantification of recurrences is often biased by sojourn points that hide dynamic transitions. To overcome this problem, time series have previously been embedded at high dimensions. However, no one has quantified the elimination of sojourn points and rate of detection, nor the enhancement of transition detection has been investigated. This paper reports our ongoing efforts to improve the detection of dynamic transitions from logistic maps and fetal hearts by reducing sojourn points. Three signal-based recurrence plots were developed, i.e. embedded with specific settings, derivative-based and m-time pattern. Determinism, cross-determinism and percentage of reduced sojourn points were computed to detect transitions. For logistic maps, an increase of 50% and 34.3% in sensitivity of detection over alternatives was achieved by m-time pattern and embedded recurrence plots with specific settings, respectively, and with a 100% specificity. For fetal heart rates, embedded recurrence plots with specific settings provided the best performance, followed by derivative-based recurrence plot, then unembedded recurrence plot using the determinism parameter. The relative errors between healthy and distressed fetuses were 153%, 95% and 91%, respectively. More than 50% of sojourn points were eliminated, allowing better
Fichier principal
Vignette du fichier
A.J.Zaylaa.pdf (4.55 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

inserm-01256061 , version 1 (14-01-2016)

Identifiants

Citer

Amira Zaylaa, Jamal Charara, Jean-Marc Girault. Reducing sojourn points from recurrence plots to improve transition detection: Application to fetal heart rate transitions. Computers in Biology and Medicine, 2015, ⟨10.1016/j.compbiomed.2014.09.007⟩. ⟨inserm-01256061⟩
130 Consultations
189 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More