ends with the same low pressure, and the chosen cycles' waveforms are representative of

the general waveforms of the breaths.

 The second step consists in sequencing the two sample cycles to create the

synthetic set. The sequence is chosen to be as in (3.2), as shown in Figure 3-4.

 [BABBBBABBBABBABAABBBBAAABBABB] (3.2)












 -1
 500 1000 1500 2000 2500 3000

 50
 40
 30
 20
 10

 500 1000 1500 2000 2500 3000



Figure 3-4 Synthetic test set: (a) Flow; (b) Pressure

 The beginning part of the sequence is faithful to the type of data considered, with

one mandatory breath followed by several spontaneous breaths, whereas the end of the

sequence is more unrealistic with two or three mandatory breaths in a row followed by a

few spontaneous ones. This was done to create some diversity, test the system to the

maximum switching speed, and beyond the particularities of this data to give more

insight into the performance of the systems for segmentation of other dynamical

behaviors or other switching patterns.