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المقياس: Apprentissage automatique II

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Objective Function for Feature Selection : Based on Intra and Inter Class distance

1 votes

Write an Objective Function for Feature Selection to compute the score based on Intra and Inter Class separation.

(In matlab or java or any other programming languages...)

نشر على 10:23, الخميس 19 ديس 2019 By Imed BOUCHRIKA
In Apprentissage automatique II


أجوبة (1)




جواب (1)

1 votes

function j = compute_score(data,ids)
   clear compute_score;
   inter = [];
   intra = [];
   for i=1:size(data,1)-1
      for ii=i+1:size(data,1)
         b1 = data(i,:);
         b2 = data(ii,:);
         d = sqrt(sum((b1-b2).^2));
         if ids(i) == ids(ii)
            intra = [intra;d];
         else
            inter = [inter;d];
         end
      end
   end
   j = mean(intra)/mean(inter);

نشر على 01:04, الأحد 12 ينا 2020 by abdennour redjaibia (282 points)
In Apprentissage automatique II



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