Mastering Functional Programming

The graph structure of the web

All the websites can be imagined as a graph of pages. Every page contains some HTML markup and content. As part of this content, most web pages contain links to other pages. Since links are supposed to take you from one page to another, we can visualize the web as a graph. We can visualize links as edges that take you from one node to another node.

Given such a model for the entire internet, it's possible to address the problem of searching for information over the web:

We are talking about a problem that is faced by the search engines. The objective of a search engine is to index the information stored online ...