Apply desision tree algorithm and show the generated rules.

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written 7.9 years ago by

aartisahitya • 170

modified 3.9 years ago by

binitamayekar ★ 6.7k

A simple exam from the stock market involving only discrete ranges has profit as categorial attribute, with values {up, down} and the training data set is given below.

Age	Competition	Type	Profit
Old	Yes	Software	Down
Old	No	Software	Down
Old	No	Hardware	Down
Mid	Yes	Software	Down
Mid	Yes	Hardware	Down
Mid	No	Hardware	Up
Mid	No	Software	Up
New	Yes	Software	Up
New	No	Hardware	Up
New	No	Software	Up

Apply desision tree algorithm and show the generated rules.

data warehouse and mining

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written 3.9 years ago by

binitamayekar ★ 6.7k

• modified 3.8 years ago

In a given data table Categorical Attribute is Profit that has discrete values UP and DOWN.

P = Profit = UP = 5

Q = Profit = Down = 5

The first step is to calculate the Information Gain for this Profit Attribute

$$ Info(Profit) = I (P, Q)= - …

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