Min Max Normalization of data in data mining

normalization in data mining

Min Max is a data normalization technique like Z score, decimal scaling, and normalization with standard deviation. It helps to normalize the data. It will scale the data between 0 and 1. This normalization helps us to understand the data easily.

For example, if I say you to tell me the difference between 200 and 1000 then it’s a little bit confusing as compared to when I ask you to tell me the difference between 0.2 and 1.

How to normalize the data through the min-max normalization technique?

marks

8
10
15
20  

Min:

The minimum value of the given attribute. Here Min is 8

Max:

The maximum value of the given attribute. Here Max is 20

V: V is the respective value of the attribute. For example here V1=8, V2=10, V3=15, and V4=20

newMax:

1

newMin:

0

normalization in data mining

 

min max normalization scalling
Figure: min-max normalization scaling

marks

marks after Min-Max normalization

8 0
10 0.16
15 0.58
20 1

Download Excel File Calculations

 

Min Max Normalization Excel File Calculations

Comparison of Min-Max Normalization and Z-Score Normalization

Let’s see the comparison of Min-Max Normalization and Z-Score Normalization

Min-max normalization Z-score normalization
Not very well efficient in handling the outliers Handles the outliers in a good way.
Min-max Guarantees that all the features will have the exact same scale. Helpful in the normalization of the data but not with the exact same scale.

Implementation of Min-Max normalization in C++

  • Calculate and show the maximum value from the array.
  • Calculate and show the minimum value from the array.
  • Calculate and show the average value from the array, and the number of values that are larger than the average.
  • Calculate and show the normalized values of the original array values.
Output

Implementation of Min Max normalization in C++

Example of Min-max scaling in data mining

Min-max normalization detail is available in the previous tutorial.

Here, There is just another example of the practice.

data mining tutorials for beginners

Min Max Normalization in Python and Matlab

Min-Max normalization is explained very briefly in the next tutorial.

Video Lecture

FAQ

min-max normalization python. min-max normalization in r. min max normalization pandas
min max normalization excel. min-max normalization vs standardization. min-max normalization matlab. use min-max normalization to transform the value 35 for age on the range.

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