0
$\begingroup$

In my data mining course, we are working with a data set. I have to identity the ranges of each attribute. I am given the set of data for all 150 points and i am given the visualization (charts) of all attributes. However I do not know how to use that set of data or the charts to find the ranges of each attribute. I do not know what is meant by range either.

I'm working on the data set for Iris plants and I have three classes of the flower.

$\endgroup$
  • $\begingroup$ Your question doesn't have enough information, however it looks like the attribute $A$ range is interval $[A_{min}, A_{max}]$ $\endgroup$ – HEKTO Sep 8 at 14:44
0
$\begingroup$

The range of the attribute is the interval where the values of the attribute varies. For Real numbers, is the closed interval [min,max].

For example, for an attribute $A$ with values $\{0.1, 0.5 , 1 , 10 , 100\}$ the range is the interval $[0.1,100]$

The concept is also valid for Integers, however there are no widely know notation to describe that. Ways of describing it would be:

$i = 1,...,10$

or

$(i \in \mathbb{Z}) \wedge (i \in [0,10])$

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.