扩展的SAR模型,多个权重矩阵W,如何求出对应的系数?

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看到这样一篇文献,
"We use an extended spatial autoregression (SAR) model (Anselin,2006) to examine the empirical support for the stated hypotheses, and the general form of our model is

where y is an n ×1 vector of dependent variables, each W i is an n ×n spatial weight matrix that defines the neighbors for the observed
dependent variables, X is a matrix of control variables, and ε is an n ×1 vector of error components that represent any unexplained
variation in the observed VC funding levels. "
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关键词：SAR模型 权重矩阵 AR模型 SAR Hypotheses represent general control examine funding

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