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. Author manuscript; available in PMC: 2019 Oct 12.

Published in final edited form as: ACM Trans Knowl Discov Data. 2013 Sep;7(3):10.

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Fig. 1. — (left) Examples of approximately eleven seconds of ECG data from a 22-year-old male (chf10) and a 54-year-old female (chf11), both with severe congestive heart failure. Note that both traces, but especially chf11, exhibit wandering baseline. (right) Without any normalization for offset or amplitude, we extracted 21 and 20 full heartbeats, respectively.