Google Matrix - Construction of Google Matrix G

Construction of Google Matrix G

Then the final Google matrix G can be expressed via S as:

By the construction the sum of all non-negative elements inside each matrix column is equal to unity. The numerical coefficient is known as a damping factor.

Usually S is a sparse matrix and for modern directed networks it has only about ten nonzero elements in a line or column, thus only about 10N multiplications are needed to multiply a vector by matrix G.

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