Attribute Index and Uniform Design Based Multiobjective Association Rule Mining with Evolutionary Algorithm

Pseudocode 4

Pseudocode of the initialization.

population  initialize(𝑃_size,𝑁)

Input: 𝑃_size indicates the size of the population; 𝑁 indicates the number

       of the attributes in the database.

Output: an 𝑀_𝑃-by-𝑁 integer matrix indicates the initial population.

  pop ← Φ; indiv ← Φ;

  while  sizeof(pop) < 𝑃_size

   while  sizeof(indiv) < 𝑁

    temp ← generate a random integer whose value is 0, 1, or 2;

    indiv = indiv ∪ temp;

   end while

   if  isvalid(indiv)

    pop = pop ∪ indiv;

   end if

  end while

  return  pop;