Journal article

Complex Correlation Measure: a novel descriptor for Poincare plot

Chandan K Karmakar, Ahsan H Khandoker, Jayavardhana Gubbi, Marimuthu Palaniswami

BIOMEDICAL ENGINEERING ONLINE | BMC | Published : 2009

Abstract

BACKGROUND: Poincaré plot is one of the important techniques used for visually representing the heart rate variability. It is valuable due to its ability to display nonlinear aspects of the data sequence. However, the problem lies in capturing temporal information of the plot quantitatively. The standard descriptors used in quantifying the Poincaré plot (SD1, SD2) measure the gross variability of the time series data. Determination of advanced methods for capturing temporal properties pose a significant challenge. In this paper, we propose a novel descriptor "Complex Correlation Measure (CCM)" to quantify the temporal aspect of the Poincaré plot. In contrast to SD1 and SD2, the CCM incorpora..

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