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CRA_Updated_Version/Classes/sorted.m

+%Class that extends the abstract class TailMethod. The method compute_tail
+%computes the upper and lower tail of a pdf by sorting its values and
+%selecting the first and the last N samples. It takes in input
+%an object TimeBehavior containing the values of the evaluation function, 
+%the array perturbation of perturbed parameters and tail_size which specifies 
+%the number of samples in each tail. It returns in output the following variables:
+% - XiMin is the array containing parameter samples in the lower tail
+% - XiMax is the array containing parameter samples in the upper tail
+
+
+classdef sorted < TailMethod
+   
+    properties 
+    end
+    
+    methods
+       
+        function [XiMax,XiMin]=compute_tailspdf(obj,obj_TimeBehavior,perturbation,tail_size)       
+                    
+         samples=obj_TimeBehavior.evalFuncValues;
+         [samples_sorted, indexes_sorted]=sort(samples);                  
+         
+         XiMin=[];
+         XiMax=[];
+         for j=1:tail_size
+             XiMax=[XiMax;perturbation(indexes_sorted(length(samples)+1-j,1),:)];
+             XiMin=[XiMin;perturbation(indexes_sorted(j,1),:)];
+         end             
+        end       
+    end    
+end
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