7. The system of claim 1 , further comprising: a concurrence dictionary for providing a degree of concurrence between words, wherein the word from the given text page can be considered as a content word C i when the concurrence degree between the word and the subject s i exceeds a threshold β, the TS of a page being TS={t 1 =(s 1 ,C 1 ), . . . , t i =(s i ,C i ), . . . , t n =(s n ,C n )}.
7. The system of claim 1 , further comprising: a concurrence dictionary for providing a degree of concurrence between words, wherein the word from the given text page can be considered as a content word C i when the concurrence degree between the word and the subject s i exceeds a threshold β, the TS of a page being TS={t 1 =(s 1 ,C 1 ), . . . , t i =(s i ,C i ), . . . , t n =(s n ,C n )}. 8. The system of claim 7 , wherein the related page specifying unit produces a feature vector for each of the subject words and the content words for comparing the base page and each of the compare pages based on a Euclidean distance.