Constructor Detail

• WeightedRandomSampler

  public WeightedRandomSampler()

  Calls BlockedRandomSampler(1,null).

• WeightedRandomSampler

  public WeightedRandomSampler(int weight,
                               RandomEngine randomGenerator)

  Chooses exactly one random element from successive blocks of weight input elements each. For example, if weight==2, and the input is 5*2=10 elements long, then chooses 5 random elements from the 10 elements such that one is chosen from the first block, one from the second, ..., one from the last block. weight == 1.0 --> all elements are consumed (sampled). 10.0 --> Consumes one random element from successive blocks of 10 elements each. Etc.

  Parameters:

  weight - the weight.

  randomGenerator - a random number generator. Set this parameter to null to use the default random number generator.

Method Detail

• clone

  public Object clone()

  Returns a deep copy of the receiver.

  Overrides:

  clone in class PersistentObject

  Returns:

  a copy of the receiver.

• getWeight

  public int getWeight()

  Not yet commented.

  Parameters:

  weight - int

• sampleNextElement

  public boolean sampleNextElement()

  Chooses exactly one random element from successive blocks of weight input elements each. For example, if weight==2, and the input is 5*2=10 elements long, then chooses 5 random elements from the 10 elements such that one is chosen from the first block, one from the second, ..., one from the last block.

  Returns:

  true if the next element shall be sampled (picked), false otherwise.

• setWeight

  public void setWeight(int weight)

  Not yet commented.

  Parameters:

  weight - int

• test

  public static void test(int weight,
                          int size)

  Not yet commented.