Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

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

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

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies show this notice on the first page or initial screen of a display along with the full citation. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers, to redistribute to lists, or to use any component of this work in other works requires prior specific permission and/or a fee. Permissions may be requested from Publications Dept., ACM, Inc., 2 Penn Plaza, Suite 701, New York, NY 10121-0701 USA, fax 1 (212) 869-0481, or permissions@acm.org.

PMC Copyright notice

Fig. 2. — (left) A single-linkage hierarchical clustering of ten beats randomly chosen from those extracted in Figure 1, using the unnormalized Euclidean distance. (right) A single-linkage hierarchical clustering of the same ten beats using normalized Euclidean distance. Only about one quarter of the data was clustered for clarity; other sized subsets have similar outcomes. The randomly extracted heartbeats are: 1, 2, 8, 12, 14 and 2, 4, 9, 17, 19.