As Page Rank calculated?

When Google introduced the concept of ranking pages they, as they are going to use the algorithm for the calculation. This formula in its current form is known only to engineers at Google, but it is fair to say that is very similar to the following formula.

PR (A) = (1 - d) + d (PR (t1) / C (t1) + ... + PR (t) / C (t))

While at first glance this may seem complicated equation, in fact, the concept is not that difficult to understand. Let minute to break down the formula, and see what conclusions can be drawn.

PR (t1) ... PR (t) - Page Rank (PR) on each page, from page to t1 ton. (tons in the amount of 1 link to a web page, A)

C (t1) ... C (t) - The number of outbound connections (C) on each page, from page to t1 ton

g - attenuation coefficient

Unlike the original Google Page Rank white paper:

The parameter d is a damping factor which can be set between 0 and 1. We usually set d to 0.85.

Knowing that these parameters, hence the importance of knowledge damping factor, we can simplify the formula for the top:

PR (A) = 0,85 * 0,15 + (A "share" in the PR of each page link to a page A)

The "participation" in each web page to page A badge can be calculated by dividing the Page Rank of the web page links to the number of outbound links on this page. Each of the links on this page will receive an equal share of the votes in the Page Rank page, which contains a reference to the outgoing. Total available at the top of each web page to send outgoing slightly less than the overall rating of pages of this page (PR page * 0,85), which can be easily obtained when the attenuation coefficient known.

Consequences

In a basic understanding of the algorithm, we can draw some conclusions on the top, and its implications for your website. For example, it could have a link to a web page X, which has a high ranking pages less than the top transfer of voting shares to a website than link to the web page Yu lower ranking pages.

How can that be? Let's analyze example:

Page X - 4 rating, 10 outbound links

Page Y - the top 8, 100 outbound links

This page will channel N 0.85 (4 / 10) = 0.34 page rank voting shares of each of the links

Page JU will transfer 0.85 (8100) 0068 by the beginning of the voting shares of each of the links

Even if Page H has a much lower rating pages worth, the fact that the number of outbound links on the page N so much less than he actually visit JU transfers over the top voting shares of each of the links page than Y.

Pages that do not link to them will continue to have modest top pages worth 0.15 with (1 - d) part of the equation. It is important to note that although it is fair and in accordance with the equations, only Google engineers secret known whether actual top page in the voting share is transferred in this scenario. Google may well say that the links page to submit the top vote share from 0 to click, and no one will know exactly but themselves.

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