Data Mining. CS157B Section 2 Larry Varela. What is Data Mining?. Data Mining is "The science of extracting useful information from large data sets or databases“. -- http://en.wikipedia.org/wiki/Data_mining
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Data Mining
CS157B Section 2
Larry Varela
-- info quoted from http://www.anderson.ucla.edu
-- info quoted from http://en.wikipedia.org/wiki/Decision_tree
Visits = 9
No Visits = 5
OUTLOOK?
overcast
sunny
rain
Visits = 2
No Visits = 3
Visits = 3
No Visits = 2
Visit = 4
No Visit = 0
HUMIDITY?
WINDY?
>70
<=70
TRUE
FALSE
Visit = 0
No Visit = 3
Visit = 2
No Visit = 0
Visit = 0
No Visit = 2
Visit = 3
No Visit = 0