vectorize XCORR - matlab

Question

如何对以下代码进行矢量化/加速？

time=1:100;
arr1=rand(5,5,100);
arr2=rand(5,5,100);
for ii=1:5
    for jj=1:5

        [xc(ii,jj),lags] = xcorr(squeeze(arr1(ii,jj,:)),...
                          squeeze(arr2(ii,jj,:)));


    end
end

它找到沿着第三维的两个矩阵之间的最大相关性的滞后。