The arguments to partition_entropy are:

• soft_partition: the membership degree of each input data point in each cluster
• a: the log base to use in the calculation; must be a real number a > 1

The return value is:

• vpe: the partition entropy for the given soft partition

To run demonstration code that uses this function, type "demo fcm" or "demo gustafson_kessel" (without the quotation marks) at the Octave prompt.

For more information about the soft_partition matrix, please see the For more information about the soft_partition matrix, please see the documentation for function fcm.

See also: fcm, gustafson_kessel, partition_coeff, xie_beni_index