As for d, d is the so-called damping factor . Considering that PageRank is calculated by simulating the behavior of users who randomly visit a page and click on links, we use this damping d factor as the probability that a user will get bored and leave the page.
As can be seen from the formula, if there is no page pointing to this page, its PR will not be zero, but
Because the user may not access this page from other pages, but from a bookmark.
PageRank algorithm core factors
The PageRank algorithm takes into spain mobile database account 3 factors:
Number of backlinks
Number of links on the links page
Page Rank of the linking page
1. Number of backlinks
Every link pointing to your page counts as a vote. The more votes you have, the more "authority" your page has.
In the example above, both Page B and Page C get backlinks from Page A. However, Page C also has another backlink from Page F. Therefore, it has a higher PageRank.
However, the quality of your links is also important. Here are some factors that influence how Google views link quality.