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To optimize F, use gradient based method:<br />
Pick a random starting point β 0<br />
Compute the personalized PageRank vector p<br />
Compute the gradient with respect<br />
to the weight vector β<br />
Update β<br />
Optimize using<br />
quasi-Newton<br />
method<br />
12/6/2011 Jure Leskovec, <strong>Stanford</strong> CS224W: Social and Information Network Analysis, http://cs224w.stanford.edu 18
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