Measure

Entropy, in bits, of the prior class distribution. Calculated by taking the sum of -log2(priorProb) over all instances, where priorProb is the prior probability of the actual class for that instance. If instances are weighted, the weighted sum is taken.

Source Code:

See WEKA's Evaluation class

Minimum value | 0 |

Maximum value | Inf |

Unit | bits |

Optimization | Higher is better |