[Retracted] Research on Forecast of Macroeconomic Indicators Based on Multiobjective Optimization

Algorithm 2

Multiobjective reduction algorithm based on subspace extraction.

Input: Solution set , optimization target number M

Output: Pre-set

1: Calculating conflict values between objective functions according to formula (17);

2: calculates the conflict contribution rate of target according to formula (18);

3: arranges goals in descending order according to conflict contribution rate ;

4:

5:

6: ;

7:

8:

9: ;

10: Divide into parts and ;

11: ; // _{Get subspace}

12:

13: Calculate the sum of fitness values of of each solution as a new optimization index and add it to subspace ;

14: Using multi-objective optimization algorithm, evolutionary optimization is carried out in subspace to generate a set of solutions;

15: merges solution sets;

16: If , merge and and return to step 1;

17: 。