--- a
+++ b/Demo/RR.m
@@ -0,0 +1,12 @@
+function model=MTRL_RR(Km,label,task_index,insIndex,ins_num)
+    n=size(Km,1);
+    task_num=length(insIndex);
+    M12=zeros(n,task_num);
+    for i=1:task_num
+        M12(insIndex{i},i)=1;
+    end
+    tmp=[label,zeros(1,task_num)]/([[Km+diag(ins_num(task_index))/2,M12];[M12',zeros(task_num)]]);
+    model.alpha=tmp(1:n);
+    model.b=tmp((n+1):(n+task_num));
+    clear tmp M12;
+    clear Km label task_index insIndex ins_num;
\ No newline at end of file