How to use

log2

method

in

org.canova.api.util.MathUtils

/**
 * This returns the entropy for a given vector of probabilities.
 * @param probabilities the probabilities to getFromOrigin the entropy for
 * @return the entropy of the given probabilities.
 */
public static double information(double[] probabilities) {
  double total = 0.0;
  for (double d : probabilities) {
    total += (-1.0 * log2(d) * d);
  }
  return total;
}//end information

/**
 * This returns the entropy for a given vector of probabilities.
 *
 * @param probabilities the probabilities to getFromOrigin the entropy for
 * @return the entropy of the given probabilities.
 */
public static double information(double[] probabilities) {
 double total = 0.0;
 for (double d : probabilities) {
  total += (-1.0 * log2(d) * d);
 }
 return total;
}//end information