'''Originally Posted By: Lester Tamlester_tam@yahoo.com''' 10. PageRank - The PageRank algorithm assigns a rank, r(P), to a page P roughly as the sum_i\frac{r(P_i)}{|Pi|} over each page Pi which links to it. Here |Pi| is the number of links going out of page Pi. PageRank uses the Power Method of computing eigenvalues. A→r→=A→(n+1)r'→≈A→(n)r'→=r→