| 摘要 |
<p>A document degree-of-importance calculating program for allowing a computer to calculate the degree of importance of each of N documents. The program allows a computer to execute a matrix determining step of determining the elements of an N-square matrix D all the elements of which are positive real numbers according to at least one parameter about a document so as to use the fact that the N-square matrix D, a positive real number e, and the column vector u composed of elements which are the degree-of-importance of N documents satisfy eu=Du according to the Perron-Frobenius theory and an iterative step of initializing a column vector v determined as an approximation value of the column vector u, carrying out calculation using (Dv)/|Dv| as a new column vector v, iterating the calculation until the column vector v satisfies a predetermined condition, and using the elements of the column vector v as the degrees of importance of the corresponding documents.</p> |
