在MATLAB中实现的GARCH-BKK程序的前几句如下：

function [parameters, loglikelihood, Ht, likelihoods, stdresid, stderrors, A, B, scores]  = full_bekk_mvgarch(data,p,q, BEKKoptions);
% INPUTS:
%      data          - A t by k matrix of zero mean residuals
%      p             - The lag length of the innovation process
%      q             - The lag length of the AR process
%      options       - (optional) Options for the optimization(fminunc)
其中输入的变量依次为：data,p,q, BEKKoptions

还有对这四个输入变量的解释，不太理解，不知哪位大侠能帮忙解释通俗一下，谢过了！