function?f?=?crowding_distance（xproblem）

%?This?function?calculates?the?crowding?distance
[NM]?=?size（x）;
switch?problem
????case?1
????????M?=?2;
????????V?=?6;
????case?2
????????M?=?3;
????????V?=?12;
end

%?Crowding?distance?for?each?front
for?i?=?1?:?length（F（front）.f）
????y（i:）?=?x（F（front）.f（i）:）;
end
for?i?=?1?:?M
????[sorted（i）.individualsorted（i）.index]?=?sort（y（:V?+?i））;
????distance（sorted（i）.index（1））.individual?=?Inf;
????distance（sorted（i）.index（length（sorted（i）.index）））.individual?=?Inf;
end

[numlen]?=?size（y）;
%?Initialize?all?the?distance?of?individuals?as?zero.
for?i?=?1?:?M
????for?j?=?2?:?num?-?1
????????distance（j）.individual?=?0;
????end
????objective（i）.range?=?...
????????????????sorted（i）.individual（length（sorted（i）.individual））?-?...
????????????????sorted（i）.individual（1）;
????????%?Maximum?and?minimum?objectives?value?for?the?ith?objective
end?
%?Caluclate?the?crowding?distance?for?front?one.
for?i?=?1?:?M
????for?j?=?2?:?num?-?1
????????distance（j）.individual?=?distance（j）.individual?+?...
????????????（sorted（i）.individual（j?+?1）?-?sorted（i）.individual（j?-?1））/...
????????????objective（i）.range;
????????y（sorted（i）.index（j）M?+?V?+?2）?=?distance（j）.individual;
????end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1273??2017-05-27?17:03??NSGA-II\crowding_distance.m

?????文件????????970??2017-05-27?17:03??NSGA-II\evaluate_objective.m

?????文件???????3509??2017-05-27?17:03??NSGA-II\genetic_operator.m

?????文件???????5128??2017-05-27?17:03??NSGA-II\html\crowding_distance.html

?????文件??????10289??2017-05-27?17:03??NSGA-II\html\genetic_operator.html

?????文件???????4434??2017-05-27?17:03??NSGA-II\html\initialize_variables.html

?????文件??????11714??2017-05-27?17:03??NSGA-II\html\non_domination_sort_mod.html

?????文件??????13753??2017-05-27?17:03??NSGA-II\html\nsga_2.html

?????文件???????6346??2017-05-27?17:03??NSGA-II\html\replace_chromosome.html

?????文件???????6186??2017-05-27?17:03??NSGA-II\html\tournament_selection.html

?????文件????????605??2017-06-06?20:59??NSGA-II\initialize_variables.m

?????文件???????3817??2017-06-07?17:37??NSGA-II\non_domination_sort_mod.m

?????文件???????2109??2017-06-08?15:49??NSGA-II\nsga_2.m

?????文件?????373682??2017-05-27?17:03??NSGA-II\NSGA_2.pdf

?????文件????????476??2017-05-27?17:03??NSGA-II\plot_objective.m

?????文件???????1977??2017-05-27?17:03??NSGA-II\replace_chromosome.m

?????文件??????54800??2017-06-08?15:47??NSGA-II\solution.txt

?????文件???????1742??2017-05-27?17:03??NSGA-II\tournament_selection.m

?????目錄??????????0??2017-05-27?17:03??NSGA-II\html

?????目錄??????????0??2017-06-08?16:05??NSGA-II

-----------?---------??----------?-----??----

???????????????502810????????????????????20