Multi-objective functions both MOEA/D-DE and NSGA2 - Examples using SchafferFunctionN1

[scudelari]

Problem location

https://ensmallen.org/docs.html#moead-de https://ensmallen.org/docs.html#nsga2

Description of problem

In the examples of both algorithms, the function SchafferFunctionN1 is used, but the lower and upper bounds have 2 variables instead of only one. arma::vec lowerBound("-1000 -1000"); arma::vec upperBound("1000 1000");

The SchafferFunctionN1 only has one variable. /**

• The Schaffer function N.1 is defined by
• \f[
• f_1(x) = x^2
• f_2(x) = (x-2)^2
• \f]
• The optimal solutions to this multi-objective function lie in the
• range [0, 2].
• @tparam arma::mat Type of matrix to optimize. */

This causes an error when trying to run the test code.

[rcurtin]

Thanks for the report! I opened #354 to handle the problem. :+1: