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Answered 2011-03-10 19:35:34

Min-Max normalization is the process of taking data measured in its engineering units (for example: miles per hour or degrees C) and transforming it to a value between 0.0 and 1.0.

The lowest (min) value is set to 0.0 and the highest (max) value is set to 1.0. This provides an easy way to compare values that are measured using different scales (for example degrees Celsius and degrees Fahrenheit) or different units of measure (speed and distance).

The normalized value is defined as: (the value - the minimum) / (the range of values).

As an example, consider a temperature reading with values 20, 24, 26, 27, 30.

The minimum value is 20.

The maximum values is 30.

The data has a range of 10 degrees.

For a temperature reading of 26, the normalized value is 0.6.

(26 - 20) / 10 = 0.6.

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