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. Author manuscript; available in PMC: 2015 Nov 3.
Published in final edited form as: Proc ACM Int Conf Ubiquitous Comput. 2015 Sep;2015:493–504. doi: 10.1145/2750858.2807526

Table 2.

All of the base and aggregated RIP features, which are computed by our system.

Base Features Aggregations
inspiration duration, expiration duration, respiration duration, I:E duration ratio, stretch, respiratory sinus arrhythmia (RSA)1 mean, median, 80th percentile, quartile deviation
breath-rate2, inspiration minute volume2
1

: RSA is a hybrid feature that uses both RIP and ECG signals.

2

: The aggregated features breath rate and inspiration minute volume are computed without any other base features, but rather using just the number of respiration cycles in a minute.