I understood the conversion of data from nominal to number.
Another problem when defining new cluster centers is that the center
attribute values will be averaged from the corresponding properties.
For example: gender: Male, faler => 0, 1, and the distance then gender will
produce a decimal value (eg 1.5). then the distance between elements cannot
be compared with the central value because gender is different from 0 and 1.
For mixed data, how to determine the cluster center?
Thank you so much!