7. The method of claim 1 , further comprising: obtaining a plurality of other words included in a document; determining, for each of a plurality of links between the plurality of other words and another concept, a probability that text, generated based on the other concept, will include a respective one of the plurality of other words; and updating the particular information, with information identifying the probability for each of the plurality of links, to obtain updated particular information.
8. The method of claim 7 , further comprising: predicting a probability of the other concept being related to different web pages, based on the updated particular information.