Link Analysis: Citations (relevance based on author judgments)
			• Some citation assumptions – If A cites (is linked to) B, then more likely that A is related to B than to arbitrary C. – If A and B are cited by (linked from) C, then A and B are more likely to be related than A or B to arbitrary D.  (co-citation) – If more objects cite A than cite B, then A is more ‘valued’ than B (citation value) – If highly ‘valued’ object A cites C and less ‘valued’ object B cites C, then A’s citation is more valuable.