How decision tree is derived
from a data set
: A case of predicting Play/Not
Play with weather information
A sample problem
Predict Play or Not Play (ex: Playing Golf)
with independent variables such as
• outlook
• temperature
• humidity
• windy
Decision Variables
Output Variables(decision variables)
.Play (golf)
.Not Play(golf)
Data set
Sort data with outlook
But, it still needs to be refined!
Final Decision Tree Induced from
Data