Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW
 
PerlMonks  

Re^7: grouping numbers

by QM (Vicar)
on Jul 11, 2013 at 14:41 UTC ( #1043740=note: print w/ replies, xml ) Need Help??


in reply to Re^6: grouping numbers
in thread grouping numbers

What you're trying to do is cluster analysis - naturally grouping data together in clusters (for some value of "naturally").

Most approaches I'm aware of require you to know the number of clusters ahead of time (which sort of defeats the purpose).

However, if you can come up with some heuristic, such as "any element of a cluster must be within 10% of the center point of the cluster's range", you might be able to quickly compute the results, and live with them. (Of course there are pathological cases where adding a new element changes the center point, causing other elements to be cast out.)

-QM
--
Quantum Mechanics: The dreams stuff is made of


Comment on Re^7: grouping numbers

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1043740]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (9)
As of 2014-09-17 20:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    How do you remember the number of days in each month?











    Results (98 votes), past polls