Step-by-Step PageRank Lab

Watch how the algorithm converges. Complete 10 manual steps to unlock the full 100-iteration convergence projection.

The Network

A B C

The 0.15 Base

Notice the (1 - d) term. Even if a page has no links, it still gets 0.15 (if d = 0.85). This represents the chance of a user just typing the URL directly.

Iteration PR(A) PR(B) PR(C)
Click "Perform Next Iteration" to start calculating.

Current Formula

Initializing values...

Exam Preparation Quiz

Test your knowledge with 10 questions based on the OCR specification.

Official OCR Past Paper Questions

Practice with real exam questions. Type your answer and click 'Check Marks' to see which marking points you hit.

Task 1: Discussion [12 Marks]

Discuss why search engine indexing and page ranking will be important for a company website. Include indexing definitions, factors affecting PageRank, and improvement strategies.

Task 2: Description [4 Marks]

Describe how a website is indexed by a search engine.

Task 3: Definition [1 Mark]

State what is meant by the term 'damping factor'.

Task 4: Identification [2 Marks]

Give two other factors that affect the output value given by the PageRank algorithm for a website.

Task 5: Application [2 Marks]

The site's owner (Stamp Collection) notices his site doesn't rank high. State what would affect his site's ranking based on the structure of the web.