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Social and Information - SNAP - Stanford University

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There are relatively few DVD titles, but DVDs account for ~ 50% of recommendations.<br />

Recommendations pper pperson<br />

DVD: 10<br />

books <strong>and</strong> music: 2<br />

VHS: 1<br />

Recommendations per purchase<br />

books: 69<br />

DVDs: 108<br />

music: 136<br />

VHS: 203<br />

Overall there are 3.69 recommendations per node on 3.85 different products.<br />

Music recommendations reached about the same number of people p p as DVDs but used only y<br />

1/5 as many recommendations<br />

<br />

Book recommendations reached by far the most people –2.8 million.<br />

All networks have a very small number of unique edges. For books, videos <strong>and</strong> music the<br />

number of unique edges is smaller than the number of nodes – the networks are highly<br />

disconnected<br />

10/27/2009 Jure Leskovec, <strong>Stanford</strong> CS322: Network Analysis<br />

27

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