Answer to Question #24396 in C++ for arash

Question

consider
outlook temperature humidity wind playball

sunny hot high weak no

sunny hot high strong no

overcast hot high weak yes

rain mild high weak yes

rain cool normal weak yes

rain cool normal strong no

overcast cool normal strong yes

sunny mild high weak no

sunny cool normal weak yes

rain mild normal weak yes

sunny mild normal strong yes

overcast mild high strong yes

outlook
/ | \
sunny / | \rainy
/ overcast \
/ | \
/ | \
/ yes \
humidity wind
/ \ / \
high / \normal weak/ \strong
/ \ / \
/ \ / \
consider we want add next node.for example temperature.we need to calculate info gain,for example for
high.how to calculate information gain and entropy?