1. If a web page is referenced many times, it may be important;
A web page that is not referenced many times, but is referenced by important web pages, may also be important; The importance of a web page is equally transmitted to the pages it refers to. This important web page is called an Authoritive web page.
2, assuming that the user at the beginning of random access to a web page in the collection of web pages, and then follow the link of the web page forward to browse the web page, not back to browse, then the probability of browsing the next page is the PageRank value of the page to be viewed
Factors affecting PR value
The PR value is represented as 11 numbers, from 0 to 10, in the Google toolbar as one