What Is Computer Science? by Daniel Page & Nigel Smart

Author:Daniel Page & Nigel Smart
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

2.how do we formalise the concept of importance, so we can compute actual PageRank values for each web-page, and,

3.once we have those values, how do we use them while resolving a given search query?

These questions are addressed, in order, by the following sections.

5.2 Using Graph Theory to Model and Explore the Web

As already discussed, the goal of web-crawling is to automatically collect and summarise information about web-pages: we want a computer to do this rather than a human because there are a lot of web-pages to process. The idea is to develop an algorithm that controls the web-crawler software, i.e., determines exactly how it automatically browses the web. This task can be made a lot easier by using graph theory, including various existing algorithms, as a starting point: we model the real web as a directed graph

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