Proximity Measure for Nominal Attributes formula and example in data mining

How to calculate Proximity Measure for Nominal Attributes? RollNo Marks Grade 1 90 A 2 80 B 3 82 B 4 90 A Pairs for distance Measurement: d(RollNo1,RollNo1) d(RollNo1,RollNo2) d(RollNo1,RollNo3) d(RollNo1,RollNo4) d(RollNo2,RollNo1) d(RollNo2,RollNo2) d(RollNo2,RollNo3) d(RollNo2,RollNo4) d(RollNo3,RollNo1) d(RollNo3,RollNo2) d(RollNo3,RollNo3) d(RollNo3,RollNo4) d(RollNo4,RollNo1) d(RollNo4,RollNo2) d(RollNo4,RollNo4) d(RollNo3,RollNo4) Formulae┬áto calculate Proximity Measure for Nominal Attribute: distance(object1, Object2) = P – … Continue reading Proximity Measure for Nominal Attributes formula and example in data mining