问dl4j神经网络的输出是什么？

EN

/** Given a probability distribution over discrete classes, sample from the distribution
 * and return the generated class index.
 * @param distribution Probability distribution over classes. Must sum to 1.0
 */
static int sampleFromDistribution(double[] distribution, Random rng){
    double d = 0.0;
    double sum = 0.0;
    for( int t=0; t<10; t++ ) {
        d = rng.nextDouble();
        sum = 0.0;
        for( int i=0; i<distribution.length; i++ ){
            sum += distribution[i];
            if( d <= sum ) return i;
        }
        //If we haven't found the right index yet, maybe the sum is slightly
        //lower than 1 due to rounding error, so try again.
    }
    //Should be extremely unlikely to happen if distribution is a valid probability distribution
    throw new IllegalArgumentException("Distribution is invalid? d="+d+", sum="+sum);
}