Methodological Framework for Estimating the Correlation Dimension in HRV Signals

Table 1

Computational time of correlation sums estimated for Lorenz attractor series of different sample lengths. 𝑆_𝑝 is the speed-up achieved and defined as 𝑆_𝑝=𝑇_Seq/𝑇_MO, where 𝑇_Seq is the time demand for a sequential algorithm and 𝑇_MO the time demand for the proposed technique based on matrix operations.

N (samples)	𝑇Seq (s)	𝑇MO (s)	𝑆𝑝
300	1086	0.9	≈1200
5000	8.69𝑒5	50	≈16000
10000	3.63𝑒6	300	≈12000